Greenhouse ventilation film rolling machine

Abstract

The utility model discloses a greenhouse ventilation film rolling machine, which relates to the technical field of greenhouse equipment, and comprises a shell, a motor is arranged outside the shell, a gear speed reducer is arranged in the shell, the gear speed reducer is in transmission connection with the motor, and the gear speed reducer comprises an output shaft and a plurality of intermediate shafts which are rotatably arranged on the shell; one of the intermediate shafts is a clutch shaft, the clutch shaft is movably installed on the shell in the axial direction, one end of the clutch shaft extends out of the shell, a control handle is hinged to the outer side of the shell and provided with a cam part, a cam control face of the cam part abuts against the extending end of the clutch shaft, and the clutch shaft is sleeved with a first reset spring; and the control handle is used for controlling the engagement and disengagement of the gear mounted on the clutch shaft and the adjacent gear. Therefore, the control handle and the cam part are arranged on the clutch shaft, and the control handle is simplified, so that the clutch control of equipment is conveniently realized, and the cost is effectively reduced.

Description

[0001] This utility model claims the priority of the following patent applications:

[0002] The Chinese utility model patent application with the application date of November 28, 2023, application number 202323213170.1, and name “A greenhouse ventilation and film rolling machine”. Technical Field

[0003] The utility model relates to the technical field of greenhouse equipment, in particular to a greenhouse ventilation and film rolling machine. Background Art

[0004] In order to ventilate and cool down, greenhouses usually have two kinds of vents reserved. One is the side vent, where the film roll is driven by the film roll to roll up the film. The other is the top vent, where the fan installed inside the greenhouse drives the pull rope through pulleys and other devices to pull the greenhouse film open. There are generally two types of fans for pulling open greenhouse film, one is a tube-type fan that uses a tube to wrap the rope, and the other is a chain-type fan that uses a chain to move back and forth to pull the rope.

[0005] Film rolls, tube roll blowers, and chain blowers are different in terms of motors, voltages, speed change mechanisms, transmission mechanisms, etc., as they were first used in different years and developed by different manufacturers. However, their working principles are roughly the same. The motor drives the output shaft through the gearbox, and the output shaft is connected to the tube or sprocket to work. Most of the components are universal. In different application scenarios, such as when used as a film roll, only minor adjustments to the relevant components are required to meet the requirements. In this way, how to improve the versatility of components and reduce manufacturing costs has become an effective means of market competition.

[0006] When using a film rolling machine, a climber needs to be set up. According to the principle of leverage, the longer the steel pipe between the guide wheels of the climber, the smaller the force on the guide wheels, and the more flexible the movement. Chinese utility model patent CN213245995U discloses a greenhouse ventilation film rolling machine. In this patent, although a climber is also set up, because the climber is installed as an integral part, not only is the installation position susceptible to interference from other parts, but the span is small and the resistance is large during movement, so the climbing is not flexible enough.

[0007] Moreover, some agricultural greenhouses are large in size and have a long film rolling stroke, which places high demands on the greenhouse film stroke limit device. However, the film rolling stroke of the existing film roll is small and cannot meet the requirements of large-scale film rolling.

[0008] In addition, due to the special environment in the greenhouse, power outages are prone to occur. At this time, it is necessary to disconnect the motor through the clutch to facilitate manual operation of the reel or sprocket. Chinese utility model patent CN208041060U discloses a greenhouse fan reducer. In this patent, the corresponding gears are disconnected by pressing the control handle. However, the control handle in the above patent uses a commercially available quick-release chuck with a self-locking structure, which is complex in structure and high in cost. Utility Model Content

[0009] In order to overcome the above-mentioned defects, the purpose of the utility model is to provide a greenhouse ventilation film rolling machine, the control handle of which has a simple structure and can easily realize the clutch control of the equipment, effectively reducing costs.

[0010] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a greenhouse venting film rolling machine, comprising a shell, a motor is provided on the outside of the shell, a gear reduction device is provided in the shell, the gear reduction device is transmission-connected to the motor, the gear reduction device comprises an output shaft rotatably mounted on the shell and a plurality of intermediate shafts; one of the plurality of intermediate shafts is a clutch shaft, the clutch shaft is axially movably mounted on the shell and one end extends out of the shell, a control handle is hinged on the outside of the shell, the control handle is provided with a cam portion, the extended end of the clutch shaft is close to the cam control surface of the cam portion, a first return spring is clamped between the clutch shaft and the shell, and the control handle is used to control the gear mounted on the clutch shaft to engage or disengage with an adjacent gear.

[0011] Preferably, a support base is provided on the shell, and the control handle is hinged to the support base.

[0012] Preferably, the extended end sleeve of the clutch shaft is provided with a protrusion, the protrusion is located in the support seat, and the cam control surface is close to the protrusion.

[0013] Preferably, the cam control surface includes a clutch stroke control surface and a cam self-locking surface.

[0014] Preferably, a limiting structure for limiting the maximum extension length of the clutch shaft is provided between the clutch shaft and the housing.

[0015] Preferably, a climber is also provided on the outside of the shell, and the climber includes an upper fixed plate and a lower fixed plate which are separately arranged, the upper fixed plate is fixed to the top of the shell, and the lower fixed plate is fixed to the bottom of the shell, the upper fixed plate and the lower fixed plate are respectively provided with guide holes with corresponding positions, and guide wheels are provided on both sides of each guide hole.

[0016] Preferably, the fixing plate is in a U-shaped groove structure, and the guide wheel is rotatably installed in the U-shaped groove of the fixing plate via a pin shaft.

[0017] Preferably, a greenhouse film stroke limit device is arranged on the outside of the shell, and the greenhouse film stroke limit device includes a box body fixed to the shell, and a limited reduction mechanism is arranged in the box body, and the limited reduction mechanism is connected to the output shaft in driving manner; the limited reduction mechanism includes a single-axis transmission gear fixed to the output shaft, and the output shaft sleeve is provided with a single-axis double gear. A transition shaft is fixedly arranged on the shell, and a transition shaft double gear is rotatably mounted on the transition shaft. The single-axis transmission gear is meshed with the small gear of the transition shaft double gear, and the large gear of the transition shaft double gear is meshed with one gear of the single-axis double gear, and the other gear of the single-axis double gear is meshed with the downstream gear of the limited reduction mechanism.

[0018] Preferably, a manual operating shaft is installed on one side of the housing, the manual operating shaft is installed vertically to the motor, and the manual operating shaft is connected to one of the plurality of intermediate shafts through a bevel gear pair.

[0019] Preferably, the manual operating shaft is close to the output shaft through an intermediate shaft connected to the bevel gear pair.

[0020] Preferably, a second return spring is clamped between the protrusion and the housing.

[0021] Preferably, the second return spring is a conical coil spring.

[0022] After adopting the above technical solution, the beneficial technical effects achieved by the utility model are:

[0023] 1. Since the control handle adopts a cam structure, the meshing and disengagement of the relevant gears on the clutch shaft can be quickly achieved by rotating the cam part at a certain angle. The operation is simple, the failure rate is lower, and the cost can be effectively reduced. The cam control surface of the cam part includes a clutch stroke control surface and a cam self-locking surface. When the clutch stroke control surface is against the clutch shaft, the disengagement of the relevant gears is achieved. When the cam self-locking surface is against the clutch shaft, the clutch shaft can be self-locked, which is convenient for operation. Since a bump is provided on the clutch shaft, when the shell is used vertically outdoors, rainwater will flow downward along the edge of the bump, which can prevent rainwater from entering the shell and damaging bearings and other components. Therefore, adding a bump can also effectively achieve a waterproof effect.

[0024] 2. When used as a film winder, since a climber is provided outside the shell, the climber includes an upper fixed plate and a lower fixed plate which are separately arranged, the upper fixed plate is fixed to the top of the shell, and the lower fixed plate is fixed to the bottom of the shell. In this way, the length of the shell can be fully utilized, and the span between the guide wheels of the upper fixed plate and the lower fixed plate can be maximized. The guide wheels are subject to less resistance during movement, and the climber can move more flexibly.

[0025] 3. Since a transition shaft double gear can be added to the limit reduction mechanism, the speed ratio is expanded through the cooperation of the transition shaft double gear with the single shaft transmission gear and the single shaft double gear, the travel of the greenhouse film travel limit device will be greatly extended, and the distance the output shaft can wrap around the greenhouse film can be longer, so the application range is wider. In most cases, the ventilator or film roll does not need to be equipped with a transition shaft, a transition shaft double gear and a single shaft double gear. Therefore, through a small change, the versatility of the components is improved, the structure is simplified, and the manufacturing cost is reduced.

[0026] 4. Since a manual operating shaft is arranged on one side of the housing and connected to the transmission shaft close to the output shaft through a bevel gear pair, the installation position of the manual operating shaft on the housing is changed to avoid interference with other parts during its movement. At the same time, since the intermediate shaft close to the output shaft is used to connect the manual operating shaft, when the manual operating shaft drives the output shaft to rotate through the intermediate shaft, the rotation force will be moderate and the output shaft speed will not be too slow, so it is more practical.

[0027] 5. Since a second return spring is provided between the shell and the protrusion, the second return spring always provides elastic force, so that the end face of the protrusion always presses against the cam control surface, so that the cam is always constrained by a force and can maintain a corresponding position state, and will not rotate and change at will. The protrusion can also always maintain a balanced state, slide more smoothly in the support seat, and is not prone to getting stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural schematic diagram of Embodiment 1 of the greenhouse ventilation film rolling machine of the utility model;

[0029] Figure 2 yes Figure 1 A front view of

[0030] Figure 3 yes Figure 1 The internal structure behind the hidden shell;

[0031] Figure 4 yes Figure 1 Enlarged view of point A in the middle;

[0032] Figure 5 yes Figure 1 Enlarged view of point B in the middle;

[0033] Figure 6 This is a structural schematic diagram of Embodiment 2 of the greenhouse ventilation film rolling machine of the utility model;

[0034] Figure 7 This is a structural schematic diagram of Embodiment 3 of the greenhouse ventilation film rolling machine of the utility model;

[0035] Figure 8 yes Figure 7 The internal structure diagram after the shell and other components are hidden;

[0036] Fig. 9 yes Figure 2 A cross-sectional view of part of the structure at CC;

[0037] Fig.10 This is a structural schematic diagram of Embodiment 4 of the greenhouse ventilation film rolling machine of the utility model;

[0038] In the figure, 1, housing; 11, motor; 12, gear reduction device; 13, output shaft; 14, clutch shaft; 15, support seat; 16, bump; 17, first return spring; 18, second return spring;

[0039] 2. Control handle; 21. Cam control surface; 211. Clutch control surface; 212. Cam self-locking surface;

[0040] 3. Climber; 31. Upper fixing plate; 32. Lower fixing plate; 33. Guide hole; 34. Guide wheel;

[0041] 4. Greenhouse film travel limit device; 41. Box body; 42. Limit reduction mechanism; 421. One-axis transmission gear; 422. One-axis double gear; 423. Transition axis double gear;

[0042] 5. Manual operating shaft, 51. Bevel gear pair. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0044] Example 1

[0045] See also Figure 1-Figure 5 The utility model provides a greenhouse ventilation film rolling machine, which, when used as a film rolling device, generally includes:

[0046] A shell body 1, a motor 11 is arranged outside the shell body 1, a gear reduction device 12 is arranged inside the shell body 1, the gear reduction device 12 is transmission-connected with the motor 11, the gear reduction device 12 comprises an output shaft 13 rotatably mounted on the shell body 1 and a plurality of intermediate shafts; the utility model can be used as a ventilator or as a film roll, the two have certain differences in appearance, and the working principles are exactly the same.

[0047] When used as a film reel, both ends of the output shaft 13 extend out of the housing 1, and the output shafts 13 on both sides can fix the reel, or one side can be used for fixing, depending on actual needs. The output speed of the motor 11 is reduced by the multi-stage gears in the gear reduction device 12, and the power is transmitted to the output shaft 13.

[0048] When the motor 11 is powered off, it will self-lock. In order to facilitate the disconnection of the output shaft 13 from the motor 11 when the power is off, one of the several intermediate shafts is set as a clutch shaft 14. The clutch shaft 14 is movably installed on the housing 1 along the axial direction, one end of which extends out of the housing 1, and the other end clamps the first reset spring 17. The extended end of the clutch shaft 14 is close to the lower surface of the cam portion. A limiting structure is set between the clutch shaft 14 and the housing 1. The limiting structure generally includes but is not limited to a retaining spring (not shown in the figure), a shoulder, a fixing sleeve, etc., which mainly limits the extension distance of the clutch shaft 14 to avoid direct friction with the cam control surface 21. When the clutch shaft 14 rotates, it does not contact the cam control surface 21, and the cam portion is connected to the control handle 2. When the control handle 2 drives the cam control surface 21 of the cam portion to rotate, the clutch shaft 14 will move in the direction of the first reset spring 17, thereby driving the separation of the gear on the clutch shaft 14 and the gear reduction device 12. In the initial state, the gear on the clutch shaft 14 is meshed with the adjacent gear, and the first return spring 17 provides elastic force to ensure that the power of the motor 11 can be transmitted to the output shaft 13. When a power outage occurs, the motor 11 will self-lock, and the reduction gear needs to be disconnected first. When the control handle 2 drives the cam part to rotate, the cam control surface 21 of the cam part will drive the clutch shaft 14 and the gear on the clutch shaft 14 to move downward in a straight line until the gear is disengaged. At this time, the rotation of the output shaft 13 is driven by the control handle 2, which is no longer affected by the self-locking of the motor 11, and it will be more labor-saving. In order to ensure stability, in addition to the clutch control surface 211 on one side of the cam control surface 21, a cam self-locking surface 212 is also provided on the other side. The cam self-locking surface 212 is generally a plane, which is used to limit the cam control surface 21 that rotates a certain angle.

[0049] The clutch shaft 14 is a prior art. In the present invention, the clutch shaft 14 and the gear on the clutch shaft 14 are part of the gear reduction device 12. The control handle 2 and the cam portion are used to connect or disconnect the gear reduction device 12. Referring to the Chinese patent application with patent number: CN208041060U, the clutch shaft 14 is described in more detail in the patent, which will not be repeated here.

[0050] The housing 1 of the utility model is provided with a support seat 15, and the control handle 2 is hinged to the support seat 15. The support seat 15 is used to connect the cam control surface 21. Since the environment in the greenhouse is relatively humid, a protrusion 16 is provided at the protruding end of the clutch shaft 14, and the cam control surface 21 is close to the protrusion 16. The protrusion 16 is used to increase the area between the clutch shaft 14 and the cam control surface 21, and can also play a role in dust and water resistance. Especially when used outdoors, moisture will not enter the interior of the housing 1.

[0051] The shell 1 of the utility model is also provided with a climber 3 on the outside. The climber 3 includes an upper fixed plate 31 and a lower fixed plate 32. The upper fixed plate 31 and the lower fixed plate 32 are fixed to the top and bottom of the shell 1 along the length direction. The upper fixed plate 31 and the lower fixed plate 32 are respectively provided with guide holes 33 corresponding to the positions. Guide wheels 34 are provided on both sides of each guide hole 33. When the film roll is in use, it needs to move along the guide rod. After adding the guide wheels 34, the shell 1 can be driven to move up and down. Since the climber 3 is arranged at both ends of the shell 1, the width of the entire device will be reduced. In order to facilitate the installation of the guide rod, the upper fixed plate 31 and the lower fixed plate 32 extend a distance to the same side. The extension direction is generally away from the manual operating shaft 5, so as to avoid movement interference with the rotating handle (not shown in the figure) at a later time.

[0052] The upper fixing plate 31 and the lower fixing plate 32 of the utility model are both U-shaped groove structures, and the guide wheel 34 is rotatably installed in the U-shaped groove of the fixing plate through a pin. The U-shaped groove structure is easy to process and shape, and the guide wheel 34 can also be installed more conveniently.

[0053] Example 2

[0054] like Figure 6 As shown, the greenhouse ventilation film rolling machine of the utility model can also be used as a ventilation machine. Its structure is basically the same as that of Example 1, except that the climber 3 is removed.

[0055] Example 3

[0056] See also Figure 7-Figure 9This embodiment is basically the same as the embodiment 1, except that when the length of the film to be wound by the output shaft 13 is significantly longer, such as when it is used in a relatively wide greenhouse, it is necessary to change the speed reduction mechanism in the greenhouse film travel limit device 4 outside the housing 1. The greenhouse film travel limit device 4 includes a box body 41 fixed to the housing 1, and a limited speed reduction mechanism 42 is arranged in the box body 41. The limited speed reduction mechanism 42 is connected to the output shaft 13 in a transmission manner; the limited speed reduction mechanism 42 includes a single shaft transmission gear 421 fixed to the output shaft 13, the output shaft 13 is sleeved with a single shaft double gear 422, the housing 1 is fixedly provided with a transition shaft, and a transition shaft double gear 423 is rotatably installed on the transition shaft, the single shaft transmission gear 421 is meshed with a small gear of the transition shaft double gear 423, the large gear of the transition shaft double gear 423 is meshed with one gear of the single shaft double gear 422, and the other gear of the single shaft double gear 422 is meshed with the downstream gear of the limited speed reduction mechanism 42. The output shaft 13 is provided with a single-axis transmission gear 421 and a single-axis double gear 422, and the transition shaft is provided with a transition shaft double gear 423, which increases the multi-stage transmission, can expand the speed ratio, and greatly extend the transmission distance, thereby expanding the stroke. The working principle of the greenhouse film stroke limit device 4 and the working principle of the limit mechanism are described in more detail in the patent application number 202022217117.9, which will not be repeated here.

[0057] A manual operating shaft 5 is installed on one side of the housing 1 of the utility model. The manual operating shaft 5 is installed vertically with the motor 11, and the manual operating shaft 5 is connected to one of the intermediate shafts through a bevel gear pair 51. The manual operating shaft 5 of the utility model is close to the output shaft 13, and the gear shaft connected to the bevel gear pair 51 is meshed with the gear of the output shaft 13. The function of the bevel gear pair 51 is to change the direction of force transmission. When installed, the manual operating shaft 5 is vertical to the motor 11, and the position is generally on the opposite side of the guide hole 33, so that the position will be more compact, and there will be no interference when rotating with auxiliary tools such as a rotating handle. In actual use, the bevel gear pair 51 and the transmission gear are generally connected separately. When the utility model is used as a chain blower, the bevel gear pair 51 does not need to be installed, and the sprocket can be directly shaken manually to achieve the purpose of releasing air.

[0058] Example 4

[0059] like Fig.10As shown, the structure of this embodiment is basically the same as that of embodiment 1 or embodiment 2, except that a second return spring 18 is added between the protrusion 16 and the housing 1. The purpose is that when the clutch shaft 14 is actually disconnected from the motor 11, the gear on the clutch shaft 14 is disengaged under the elastic force of the first return spring 17, and under the action of the second return spring 18, the end face of the protrusion 16 is always in contact with the cam control surface 211, so it can slide smoothly in the support seat 15, and is less likely to get stuck.

[0060] The second return spring 18 is preferably a conical coil spring. After being compressed, the conical coil spring occupies less space and can be better placed in the cavity of the support seat 15.

[0061] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A greenhouse ventilation film rolling machine, comprising: A housing, a motor is arranged outside the housing, a gear reduction device is arranged inside the housing, the gear reduction device is drivingly connected with the motor, and the gear reduction device comprises an output shaft rotatably mounted on the housing and a plurality of intermediate shafts; characterized in that: One of the several intermediate shafts is a clutch shaft, which is movably installed on the housing along the axial direction and one end of the clutch shaft extends out of the housing. A control handle is hinged on the outer side of the housing, and the control handle is provided with a cam portion. The extended end of the clutch shaft is close to the cam control surface of the cam portion. A first return spring is clamped between the clutch shaft and the housing. The control handle is used to control the gear installed on the clutch shaft to engage or disengage with an adjacent gear.

2. The greenhouse ventilation film rolling machine according to claim 1, characterized in that: A support base is provided on the shell, and the control handle is hinged to the support base.

3. The greenhouse ventilation film rolling machine according to claim 2, characterized in that: The extended end sleeve of the clutch shaft is provided with a protrusion, the protrusion is located in the support seat, and the cam control surface is close to the protrusion.

4. The greenhouse ventilation film rolling machine according to claim 3, characterized in that: A second return spring is also clamped between the protrusion and the housing.

5. The greenhouse ventilation film rolling machine according to claim 4, characterized in that: The second return spring is a conical coil spring.

6. The greenhouse ventilation film rolling machine according to claim 2, characterized in that: The cam control surface includes a clutch stroke control surface and a cam self-locking surface.

7. The greenhouse ventilation film rolling machine according to claim 2, characterized in that: A limiting structure for limiting the maximum extension length of the clutch shaft is arranged between the clutch shaft and the housing.

8. The greenhouse ventilation film rolling machine according to claim 1, characterized in that: A climber is also provided on the outside of the shell, and the climber includes an upper fixing plate and a lower fixing plate which are separately arranged, the upper fixing plate is fixed to the top of the shell, and the lower fixing plate is fixed to the bottom of the shell, the upper fixing plate and the lower fixing plate are respectively provided with guide holes corresponding to positions, and guide wheels are provided on both sides of each guide hole, the fixing plate is in a U-shaped groove structure, and the guide wheel is rotatably installed in the U-shaped groove of the fixing plate through a pin shaft.

9. The greenhouse ventilation film rolling machine according to claim 1, characterized in that: A greenhouse film stroke limit device is arranged on the outside of the shell, and the greenhouse film stroke limit device includes a box body fixed to the shell, and a limited reduction mechanism is arranged in the box body, and the limited reduction mechanism is connected to the output shaft in transmission; the limited reduction mechanism includes a single-axis transmission gear fixed to the output shaft, and the output shaft sleeve is provided with a single-axis double gear. A transition shaft is fixedly arranged on the shell, and a transition shaft double gear is rotatably mounted on the transition shaft. The single-axis transmission gear is meshed with the small gear of the transition shaft double gear, and the large gear of the transition shaft double gear is meshed with one gear of the single-axis double gear, and the other gear of the single-axis double gear is meshed with the downstream gear of the limited reduction mechanism.

10. The greenhouse ventilation film rolling machine according to claim 1, characterized in that: A manual operating shaft is installed on one side of the housing, the manual operating shaft is installed vertically to the motor, and the manual operating shaft is connected to one of the plurality of intermediate shafts through a bevel gear pair; the intermediate shaft to which the manual operating shaft is connected through the bevel gear pair is close to the output shaft.

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