A structure and method for retracting and deploying a heat-insulating quilt

Abstract

The present application relates to a structure and method for retracting and deploying a heat-insulating quilt, belonging to the technical field of greenhouse heat-insulating quilt retraction and prevention. The retracting and deploying structure includes: a deploying motor; a retracting motor; a separating member, provided in two groups. Based on a triggering condition, when the heat-insulating quilt is deployed, one group is used to connect the output shaft of the deploying motor coaxially with the wire rope reel, and the other group is used to separate the output shaft of the retracting motor from the heat-insulating quilt reel; when the heat-insulating quilt is retracted, one group is used to separate the output shaft of the deploying motor from the wire rope reel, and the other group is used to connect the output shaft of the retracting motor coaxially with the heat-insulating quilt reel. Since there is no connection between the deploying motor and the retracting motor, the control difficulty of the two motors is reduced, thereby reducing the requirements for the control system.

Description

Technical Field

[0001] The present application relates to the technical field of the retraction and extension of greenhouse heat preservation quilts, and in particular to a heat preservation quilt retraction and extension structure and method. Background Art

[0002] In environments such as seedling cultivation that require the use of greenhouses, heat preservation quilts are usually needed for heat preservation, so it is necessary to realize the retraction and extension of the heat preservation quilts. In the related art, when controlling the retraction and extension of the heat preservation quilt, a method of simultaneously driving two motors is adopted; for example, when controlling the unfolding of the heat preservation quilt, one motor controls the rotation of the reel for unwinding the steel wire rope, the steel wire rope is wound up, and the steel wire rope drives the heat preservation quilt to unfold, and the other motor controls the rotation of the reel for unwinding the heat preservation quilt, and the heat preservation quilt is unwound, so that the heat preservation quilt can be unfolded.

[0003] Since the heat preservation quilt is usually stored on the reel, the diameter of the heat preservation quilt on the reel increases and decreases, resulting in different linear velocities in the circumferential direction at the same rotational speed. When the diameter is small, the corresponding linear velocity is relatively small, and when the diameter is large, the corresponding linear velocity is relatively large, which is likely to affect the unfolding and retracting of the heat preservation quilt. When driving the two motors simultaneously, the rotational speeds between the two motors are not in a linear relationship, so the control difficulty is relatively large, and the requirements for the control system are too high. Summary of the Invention

[0004] In order to reduce the requirements for the control system and the control difficulty of the motor, the present application provides a heat preservation quilt retraction and extension structure and method.

[0005] In a first aspect, a heat preservation quilt retraction and extension structure provided by the present application adopts the following technical solution:

[0006] A heat preservation quilt retraction and extension structure includes:

[0007] An unfolding motor;

[0008] A retracting motor;

[0009] A separating member, provided in two groups, based on a triggering condition, when the heat preservation quilt is unfolded, one group is used to connect the output shaft of the unfolding motor to the steel wire rope reel coaxially, and the other group is used to separate the output shaft of the retracting motor from the heat preservation quilt reel; when the heat preservation quilt is retracted, one group is used to separate the output shaft of the unfolding motor from the steel wire rope reel, and the other group is used to connect the output shaft of the retracting motor to the heat preservation quilt reel coaxially.

[0010] By adopting the above technical solution, when the insulation quilt is unfolded, since the output shaft of the retracting motor is separated from the insulation quilt reel, when the unfolding motor drives the wire rope reel to rotate, the insulation quilt will actively drive the insulation quilt reel to rotate as it unfolds, so that the insulation quilt reel passively unreels the insulation quilt. Since the insulation quilt reel is separated from the retracting motor at this time, there is no longer a connection between the unfolding motor and the retracting motor, thus reducing the control difficulty of the two motors and thereby reducing the requirements for the control system.

[0011] Optionally, the separating member includes:

[0012] An overrunning clutch, and the triggering condition is that the motor rotates at high speed;

[0013] Or,

[0014] A jaw-type electromagnetic clutch, and the triggering adjustment is energization;

[0015] One of the overrunning clutches or one of the jaw-type electromagnetic clutches connects and separates the output shaft of the unfolding motor from the wire rope reel, and the other overrunning clutch or one of the jaw-type electromagnetic clutches connects and separates the output shaft of the retracting motor from the insulation quilt reel.

[0016] By adopting the above technical solution, when it is an overrunning clutch, when the unfolding motor rotates forward at low speed, the overrunning clutch on the unfolding motor side is in an engaged state inside, and the power is thus transmitted to the wire rope and then to the insulation quilt, so that the insulation quilt can be unfolded. At the same time, the retracting motor rotates reversely at high speed, and the overrunning clutch on the retracting motor side is in a disengaged state inside; when it is a jaw-type electromagnetic clutch, when the unfolding motor works, the jaw-type electromagnetic clutch on the unfolding motor side is in an engaged state, and the power is thus transmitted to the wire rope and then to the insulation quilt, so that the insulation quilt can be unfolded. At the same time, the jaw-type electromagnetic clutch on the retracting motor side is de-energized and is in a disengaged state inside.

[0017] Optionally, the retracting and unreeling structure further includes:

[0018] An extension shaft. One end of one extension shaft is separated from or coaxially connected to the output shaft of the unfolding motor through the separating member, and one end of the other extension shaft is separated from and coaxially connected to the output shaft of the retracting motor through the separating member;

[0019] The other end of one extension shaft is detachably connected to the wire rope reel, and the other end of the other extension shaft is detachably connected to the insulation quilt reel; both the unfolding motor and the retracting motor are connected in a lifting and sliding manner in the greenhouse.

[0020] By adopting the above technical solution, since the heat preservation quilt is usually installed at a high position in the greenhouse, the unfolding motor and the retracting motor are also usually installed at a high position, and it is not convenient to repair the unfolding motor and the retracting motor later. Therefore, in order to facilitate the repair, the above solution is designed. When repairing the retracting motor, the extension shaft is separated from the heat preservation quilt reel, and then the retracting motor is driven to descend; in addition, since the separating part and the retracting motor can be regarded as a whole, it can also be conveniently installed on other shafts without independently installing the separating part and the motor.

[0021] Optionally, the retracting and deploying structure further includes:

[0022] Sliding plates, two of which are provided and are both installed in the greenhouse, and sliding grooves are formed on both of the sliding plates;

[0023] Sliding blocks, which slide along the sliding grooves and are fixedly connected to the retracting motor and the unfolding motor;

[0024] Lifting components, two groups are provided, one group is used to drive the sliding of the retracting motor, and the other group is used to drive the sliding of the unfolding motor.

[0025] By adopting the above technical solution, it is convenient for the retracting motor and the unfolding motor to slide.

[0026] Optionally, based on the retracting motor, the lifting component includes:

[0027] A hand crank, which is installed at one end of the sliding plate close to the ground, and a group of steel wire ropes in the hand crank are wound around the retracting motor.

[0028] By adopting the above technical solution, by rotating the hand crank forward and backward, the steel wire rope can be wound or unwound, so as to realize the rising or falling of the retracting motor.

[0029] Optionally, a connection disk is coaxially and fixedly connected to the extension shaft, a connecting rod is slidably connected to the connection disk, connection grooves are formed on both the steel wire rope reel and the heat preservation quilt reel, and the connecting rod can be inserted into the connection grooves; the retracting and deploying mechanism further includes a driving component, and the driving component is used to drive the sliding of the connecting rod.

[0030] By adopting the above technical solution, after the connecting rod is inserted into the connection groove, when the extension shaft rotates, it will drive the steel wire rope reel or the heat preservation quilt reel to rotate.

[0031] Optionally, the driving component includes:

[0032] The driving gear is rotatably connected to the connecting disk. The driving gear is coaxially and fixedly connected with a first bevel gear. A cavity is formed in the connecting disk. A second bevel gear is rotatably connected to the side wall of the cavity. The first bevel gear meshes with the second bevel gear. The second bevel gear is fixedly connected with a cam. A push block is slidably connected in the cavity. The connecting rod is fixedly connected to the push block. The cam is used to drive the sliding of the push block. A return spring is fixedly connected to the side wall of the cavity. The return spring is fixedly connected with the push block.

[0033] The driving rack meshes with the driving gear and is slidably connected to the sliding plate.

[0034] The other set of steel wire ropes of the hand cranker is wound around the driving rack.

[0035] By adopting the above technical solution, after the rocker is switched to the hole corresponding to the other set of steel wire ropes, by rotating the rocker forward and backward, the other set of steel wire ropes drives the lifting of the driving rack, so as to realize the telescopic movement of the connecting rod, which is convenient for realizing the connection and separation between the extension shaft and the steel wire rope reel or the insulation quilt reel.

[0036] Optionally, the extension shaft is telescopically arranged and includes a fixed section and a telescopic section. The connecting disk is coaxially and fixedly connected to the telescopic section.

[0037] By adopting the above technical solution, by adjusting the overall length of the extension shaft, the distance between the motor and the reel can be adjusted, so as to facilitate the adjustment of the installation position of the motor.

[0038] Optionally, the telescopic section is sleeved on the fixed section, and a locking block is fixedly connected to the end far from the connecting disk. A locking groove is formed in the locking block. A locking tooth is slidably connected in the locking groove. A locking spring is placed in the locking groove. One end of the locking spring abuts against the side wall of the locking groove, and the other end abuts against the locking tooth. A locking rack is fixedly connected to the outer wall of the fixed section. The locking tooth can mesh with the locking rack.

[0039] By adopting the above technical solution, the locking tooth meshes with the locking rack, and the telescopic section is locked.

[0040] In a second aspect, the present application provides a method for retracting and deploying an insulation quilt, and the following technical solution is adopted:

[0041] A method for retracting and deploying an insulation quilt, based on a retracting motor (200), includes:

[0042] Install the sliding plate;

[0043] Install the retracting motor;

[0044] Install a hand crank on the sliding plate, wind a set of steel wire ropes of the hand crank around the retracting motor, and connect the other set of steel wire ropes to the driving rack;

[0045] Adjust the length of the extension shaft according to the distance between the sliding plate and the insulation quilt reel;

[0046] Turn the hand crank, and the retracting motor rises;

[0047] When the retracting motor reaches the position, turn the hand crank, the driving rack descends, and the connecting rod is inserted into the connecting groove.

[0048] In summary, the present application has at least the following beneficial effects:

[0049] 1. By setting the separating member, the unfolding motor and the retracting motor are no longer connected, so the control difficulty of the two motors is reduced, and thus the requirement for the control system is reduced.

[0050] 2. By setting the sliding of the extension shaft, the unfolding motor and the retracting motor, it is convenient for the motor to descend from a high place to near the ground for easy maintenance of the motor.

[0051] 3. By setting the telescoping of the extension shaft, the distance between the motor and the reel can be adjusted, so that the installation position of the motor can be easily adjusted.

[0052] 4. By setting the hand crank, it is convenient to realize the lifting of the motor and the connection between the extension shaft and the reel. Description of the Drawings

[0053] Figure 1 It is a schematic diagram of the retractable structure of the present application in an embodiment, and a schematic diagram of winding the insulation quilt in an embodiment of the separating member;

[0054] Figure 2 It is a schematic diagram of the retractable structure of the present application in an embodiment, and a schematic diagram of winding the insulation quilt in another embodiment of the separating member;

[0055] Figure 3 It is a schematic structural diagram of the connection relationship between the sliding plate and the retracting motor in another embodiment of the retractable structure of the present application;

[0056] Figure 4 It is a schematic diagram of the overall structure of another embodiment of the retractable structure of the present application;

[0057] Figure 5 It is Figure 4 An enlarged schematic diagram of the structure of part A in;

[0058] Figure 6 It is Figure 4 An enlarged schematic diagram of the structure of part B in;

[0059] Figure 7 It is a schematic diagram of the overall structure of the connection plate;

[0060] Figure 8 It is a schematic sectional view of the connection plate on the side close to the retracting motor;

[0061] Figure 9 It is a schematic sectional view of the connection plate on the side close to the insulation blanket reel;

[0062] Figure 10 It is a schematic diagram of the label;

[0063] Figure 11 It is a flowchart of an implementation manner of the retracting and deploying method of the present application;

[0064] Figure 12 It is a flowchart of another implementation manner of the retracting and deploying method of the present application.

[0065] Explanation of reference numerals: 100, deployment motor; 200, retracting motor; 300, separating member; 400, sliding plate; 410, sliding groove; 500, hand crank; 510, label; 600, extension shaft; 610, telescopic section; 611, connection plate; 612, connecting rod; 620, fixed section; 621, locking rack; 630, locking block; 631, locking groove; 632, locking spring; 633, locking tooth; 700, driving member; 710, driving gear; 711, first bevel gear; 712, second bevel gear; 713, cavity; 720, cam; 721, pushing block; 730, return spring; 740, driving rack; 741, limit switch; 750, auxiliary plate; 760, guide wheel; 770, connection groove. Detailed implementation manners

[0066] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying Figure 1 - accompanying Figure 12 , and it is obvious that the described embodiments are some, rather than all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0067] An embodiment of the present application discloses a structure for retracting and deploying an insulation blanket. Refer to Figure 1, as an embodiment of the retracting and deploying structure, the retracting and deploying structure may include a deploying motor 100, a retracting motor 200, and two separating members 300; among them, the two separating members 300 have the same structure. The separating member 300 may be a sprag overrunning clutch. One overrunning clutch is used to achieve coaxial connection or separation between the output shaft of the deploying motor 100 and the wire rope reel, and the other overrunning clutch is used to achieve coaxial connection or separation between the output shaft of the retracting motor 200 and the insulation quilt reel. When the separating member 300 is an overrunning clutch, the triggering condition is that the motor rotates at high speed; that is, the deploying motor 100 rotates forward at low speed, the internal engagement state of the overrunning clutch on the side of the deploying motor 100, the power is thus transmitted to the wire rope, and then transmitted to the insulation quilt, so that the insulation quilt can be deployed. At the same time, the retracting motor 200 rotates reversely at high speed, and the internal disengaged state of the overrunning clutch on the side of the retracting motor 200.

[0068] Referring to Figure 2 , the separating member 300 may also be a coil jaw electromagnetic clutch. At this time, the triggering condition is power-on; that is, when the deploying motor 100 works, the jaw electromagnetic clutch on the side of the deploying motor 100 is energized with direct current, and the internal state of the jaw electromagnetic clutch is in the engaged state. The power is thus transmitted to the wire rope, and then transmitted to the insulation quilt, so that the insulation quilt can be deployed. At the same time, the jaw electromagnetic clutch on the side of the retracting motor 200 is de-energized, and the internal state is in the disengaged state.

[0069] Since the insulation quilt is usually installed at a high place in the greenhouse, the deploying motor 100 and the retracting motor 200 are also usually installed at a high place, and it is not convenient to repair the deploying motor 100 and the retracting motor 200 later. Therefore, in order to facilitate the installation and repair of the retracting motor 200 and the deploying motor 100, as follows:

[0070] Referring to Figure 3 , as another embodiment of the retracting and deploying structure, the retracting and deploying structure may include a sliding plate 400 and a lifting member. There are two sliding plates 400 and two groups of lifting members; they correspond to the deploying motor 100 and the retracting motor 200 respectively. Taking the retracting motor 200 as an example, the sliding plate 400 is installed in the greenhouse by bolts. The sliding plate 400 is integrally formed by a horizontal plate and a vertical plate; a sliding groove 410 is formed on the vertical plate of the sliding plate 400, and a sliding block is fixedly connected to the housing of the retracting motor 200, and the sliding block slides along the sliding groove 410. The lifting member may include a hand crank 500, which is installed at one end of the sliding plate 400 close to the ground by bolts, and a group of wire ropes in the hand crank 500 are wound around the retracting motor 200.

[0071] In addition, the retracting and extending structure may further include two extension shafts 600. One extension shaft 600 is separated from or coaxially connected to the output shaft of the unfolding motor 100 through the separating member 300, and the other extension shaft 600 is separated and coaxially connected to the output shaft of the retracting motor 200 through the separating member 300. Continuing with the retracting motor 200 as an example:

[0072] Referring to Figure 4 and Figure 5 , the extension shaft 600 is telescopically arranged, including a fixed section 620 and a telescopic section 610. The telescopic section 610 is sleeved on the fixed section 620, and a locking block 630 is fixedly connected to one end close to the retracting motor 200. A locking groove 631 is formed in the locking block 630, and a locking tooth 633 is slidably connected in the locking groove 631; and a locking spring 632 is placed in the locking groove 631. One end of the locking spring 632 abuts against the side wall of the locking groove 631, and the other end abuts against the locking tooth 633. A locking rack 621 is fixedly connected to the outer wall of the fixed section 620, and the locking tooth 633 can be engaged with the locking rack 621.

[0073] Referring to Figure 4 , Figures 6 - 9 , a connecting disk 611 is coaxially and fixedly connected to the telescopic section 610, and a connecting rod 612 perpendicular to the diameter is slidably connected to the connecting disk 611 (see Figure 7 ). To drive the sliding of the connecting rod 612, the retracting and extending mechanism may further include a driving component 700. The driving component 700 may include a driving gear 710. The driving gear 710 is rotatably connected to the connecting disk 611, and a first bevel gear 711 is coaxially and fixedly connected to the driving gear 710. An annular cavity 713 is formed in the connecting disk 611, and a second bevel gear 712 is rotatably connected to the side wall of the cavity 713. The first bevel gear 711 is engaged with the second bevel gear 712; a cam 720 is coaxially and fixedly connected to the second bevel gear 712, and the cam 720 is used to drive the sliding of the connecting rod 612. To realize the reset of the connecting rod 612, an annular push block 721 is slidably connected in the cavity 713. The connecting rod 612 is fixedly connected to the push block 721, and a reset spring 730 is fixedly connected to the side wall of the cavity 713. The reset spring 730 is also fixedly connected to the surface of the push block 721 away from the connecting rod 612.

[0074] In addition, referring to Figure 3 and Figure 4 , the driving component 700 may further include a driving rack 740. The driving rack 740 can be engaged with the driving gear 710. An auxiliary plate 750 is fixedly connected to one end of the horizontal plate of the sliding plate 400 away from the vertical plate. The driving rack 740 is slidably connected to the auxiliary plate 750. Another set of steel wire ropes of the hand crank 500 bypasses the guide wheel 760 installed on the sliding plate 400 and is wound around the driving rack 740.

[0075] It should be noted that a limit switch 741 can be fixedly connected to the auxiliary board 750. When the connecting disk 611 touches the limit switch 741, it indicates that the motor has risen to the in-place position.

[0076] A connecting groove 770 is provided in the heat preservation quilt reel. After the connecting rod 612 extends, it can be inserted into the connecting groove 770.

[0077] In order to facilitate the staff to identify the steel wire ropes for driving the lifting of the motor and the steel wire ropes for driving the lifting of the driving rack 740, labels 510 are pasted at both rotating holes on the surface of the hand crank 500 for distinction. The style of the label 510 is as Figure 10 shown.

[0078] The implementation principle of this embodiment is as follows:

[0079] By inserting the rocker into one of the holes of the hand crank 500 and then rotating it forward, the steel wire rope drives the retracting motor 200 to rise. After rising to the in-place position, insert the rocker into the other hole and then rotate it backward. The steel wire rope drives the driving rack 740 to descend. The driving rack 740 drives the driving gear 710 to rotate. The cam 720 pushes the connecting rod 612 to extend, and the connecting rod 612 is inserted into the connecting groove 770, so as to realize the connection between the extension shaft 600 and the heat preservation quilt reel; to unfold the heat preservation quilt, and taking the overrunning clutch as the separating member 300 as an example, the unfolding motor 100 rotates forward at a low speed, the overrunning clutch on the side of the unfolding motor 100 is in an internal engaged state, the power is thus transmitted to the steel wire rope and then to the heat preservation quilt, so that the heat preservation quilt can be unfolded. At the same time, the retracting motor 200 rotates backward at a high speed, the overrunning clutch on the side of the retracting motor 200 is in an internal disengaged state, and the extension shaft 600 is separated from the output shaft of the retracting motor 200.

[0080] The second embodiment of this application discloses a method for retracting and deploying a heat preservation quilt. Referring to Figure 11 , from the installation perspective, taking the retracting motor 200 as an example; this retracting and deploying method may include S101 - S106:

[0081] S101, install the sliding plate 400;

[0082] S102, install the retracting motor 200;

[0083] S103, install the hand crank 500 on the sliding plate 400, and wind one group of steel wire ropes of the hand crank 500 around the retracting motor 200, and connect the other group of steel wire ropes to the driving rack 740;

[0084] S104, adjust the length of the extension shaft 600 according to the distance between the sliding plate 400 and the heat preservation quilt reel;

[0085] S105, turn the hand crank 500 by hand, and the retracting motor 200 rises;

[0086] At S106, when the retracting motor 200 reaches its position, turn the hand crank 500 by hand to drive the rack 740 to descend, and the connecting rod 612 is inserted into the connecting slot 770.

[0087] Specifically, the installation and disassembly methods of the unfolding motor 100 and the retracting motor 200 are the same; taking the retracting motor 200 as an example, first install the sliding plate 400 in the greenhouse by bolts. At this time, sliding slots 410, the driving rack 740 and the limit switch 741 have been pre-opened on the sliding plate 400; then install the retracting motor 200 on the sliding plate 400, and install the hand crank 500 at one end of the sliding plate 400 close to the ground. One set of steel wires of the hand crank 500 is wound around the retracting motor 200, and the other set of steel wires is wound around the driving rack 740; then measure the distance between the sliding plate 400 and the corresponding heat preservation quilt roller, and adjust the length of the extension shaft 600 according to this distance. After the adjustment is completed, lock it with the locking teeth 633; then insert the rocker into the hole representing the motor and rotate it forward (counterclockwise) to make the retracting motor 200 rise. After the retracting motor 200 reaches its position, insert the rocker into the hole representing the rack and rotate it backward (clockwise) to make the driving rack 740 descend, and drive the connecting rod 612 to be inserted into the connecting slot 770 to complete the installation of the retracting motor 200.

[0088] Refer to Figure 12 , from the perspective of maintenance, the retracting and deploying method may include S201 - S202:

[0089] At S201, turn the hand crank 500 by hand to drive the rack 740 to rise, and the connecting rod 612 disengages from the connecting slot 770;

[0090] At S202, turn the hand crank 500 by hand to make the retracting motor 200 descend.

[0091] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application in turn. Any feature disclosed in this specification (including the abstract and drawings), unless specifically described, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically described, each feature is only an example in a series of equivalent or similar features.

Claims

1. A structure for retracting and extending a heat-insulating quilt, characterized in that, Including: Deployment motor (100); Retraction motor (200); Separation member (300), provided with two groups. Based on the triggering condition, when the heat preservation quilt is deployed, one group is used to co-axially connect the output shaft of the deployment motor (100) with the wire rope reel, and the other group is used to separate the output shaft of the retraction motor (200) from the heat preservation quilt reel; when the heat preservation quilt is retracted, one group is used to separate the output shaft of the deployment motor (100) from the wire rope reel, and the other group is used to co-axially connect the output shaft of the retraction motor (200) with the heat preservation quilt reel; The separation member (300) includes: Overrunning clutch, and the triggering condition is that the motor rotates at high speed; Or, Jaw electromagnetic clutch, and the triggering condition is power-on; The retracting and deploying structure further includes: Extension shaft (600), one end of one extension shaft (600) is separated from or co-axially connected to the output shaft of the deployment motor (100) through the separation member (300), and one end of the other extension shaft (600) is separated from or co-axially connected to the output shaft of the retraction motor (200) through the separation member (300); One end of the other extension shaft (600) is detachably connected to the wire rope reel, and one end of the other extension shaft (600) is detachably connected to the heat preservation quilt reel; both the deployment motor (100) and the retraction motor (200) are connected in a lifting and sliding manner in the greenhouse; The extension shaft (600) is coaxially and fixedly connected with a connection disk (611), a connecting rod (612) is slidably connected to the connection disk (611), and both the wire rope reel and the heat preservation quilt reel are provided with connection grooves (770), and the connecting rod (612) can be inserted into the connection grooves (770); the retracting and deploying mechanism further includes a driving component (700), and the driving component (700) is used to drive the sliding of the connecting rod (612); The driving component (700) includes: Driving gear (710), rotatably connected to the connection disk (611), the driving gear (710) is coaxially and fixedly connected with a first bevel gear (711), a cavity (713) is formed in the connection disk (611), a second bevel gear (712) is rotatably connected to the side wall of the cavity (713), and the first bevel gear (711) meshes with the second bevel gear (712); the second bevel gear (712) is fixedly connected with a cam (720); a push block (721) is slidably connected in the cavity (713), the connecting rod (612) is fixedly connected to the push block (721), and the cam (720) is used to drive the sliding of the push block (721); a return spring (730) is fixedly connected to the side wall of the cavity (713), and the return spring (730) is fixedly connected to the push block (721); Driving rack (740), meshing with the driving gear (710).

2. The retractable structure of a heat-insulating quilt according to claim 1, wherein, One of the overrunning clutches or one of the jaw electromagnetic clutches connects and disconnects the output shaft of the unfolding motor (100) and the wire rope reel, and the other overrunning clutch or one of the jaw electromagnetic clutches connects and disconnects the output shaft of the retracting motor (200) and the heat preservation cover reel.

3. The retractable structure of a heat-insulating quilt according to claim 1, characterized in that, The retracting and deploying structure further includes: Sliding plates (400), two of which are provided and are both installed in the greenhouse. Sliding grooves (410) are formed on both of the sliding plates (400); the driving rack (740) is slidably connected to the sliding plates (400); Sliding blocks (420) are fixedly connected to the retracting motor (200) and the unfolding motor (100), and slide along the sliding grooves (410); Lifting components, two groups of which are provided. One group is used to drive the sliding of the retracting motor (200), and the other group is used to drive the sliding of the unfolding motor (100).

4. A heat preservation quilt retracting and extending structure according to claim 1, characterized in that, The extension shaft (600) is telescopically arranged, including a fixed section (620) and a telescopic section (610), and the connecting disk (611) is coaxially and fixedly connected to the telescopic section (610); The telescopic section (610) is sleeved on the fixed section (620), and a locking block (630) is fixedly connected to the end far away from the connecting disk (611). A locking groove (631) is formed in the locking block (630). A locking tooth (633) is slidably connected in the locking groove (631). A locking spring (632) is placed in the locking groove (631). One end of the locking spring (632) abuts against the side wall of the locking groove (631), and the other end abuts against the locking tooth (633); a locking rack (621) is fixedly connected to the outer wall of the fixed section (620), and the locking tooth (633) can be engaged with the locking rack (621).

5. The heat-insulating quilt retracting and extending structure according to claim 3, characterized in that, Based on the retracting motor (200), the lifting component includes: A hand crank (500) is installed near the ground in the greenhouse. One group of wire ropes in the hand crank (500) is wound around the retracting motor (200), and the other group of wire ropes is wound around the driving rack (740).

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