A seedling tray rotating device and agricultural operation machinery

Abstract

The present application discloses a seedling tray rotating device and agricultural operation machinery, including a seedling tray conveying component, the two ends of which are a starting end and an ending end respectively; a seedling tray rotating limit component, which is arranged outside the ending end of the seedling tray conveying component; and a seedling tray rotating conveying component, the two ends of which are a fixed end and a release end respectively, the fixed end is located below the seedling tray rotating limit component, and the release end is located below the seedling tray conveying component. The device adopts belt transmission, has a simple structure and high reliability, and solves the problem that the recovery device structure is relatively complex and the seedling tray recovery is difficult in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to a seedling tray rotating device and an agricultural operating machinery. Background Art

[0002] Nowadays, agricultural mechanization is becoming more and more popular. How to improve the planting efficiency of crops (such as rice) has always been a technical difficulty that technicians in this field need to overcome. At present, the mechanization level of land preparation and harvesting of crops is relatively high, while the mechanization level of planting is relatively low. Many areas still use the most primitive manual planting method, which consumes a lot of manpower and has low efficiency.

[0003] In order to solve the problem of low efficiency in the planting process, people gradually began to use planting machinery instead of manual labor. Among them, the use of seedling trays for planting seedlings (such as seedling throwing machines or pot seedling transplanting machines) is one of the main forms of mechanical planting. When performing planting operations, the seedling conveying device of the planting machinery transports the seedling trays carrying the seedlings to the seedling taking device, and the seedling taking device takes the seedlings to the planting (such as seedling throwing or transplanting) device, and then the planting device completes the planting process; the seedling trays at the end of the seedling conveying device, if left in the nursery field, will not only affect the environment, but also easily affect the growth of crops. Therefore, after all the seedlings in them are taken out, they need to be uniformly recycled. For disposable seedling trays, recycling can avoid damaging the environment or affecting environmental growth, and for non-disposable seedling trays, they can also be easily reused.

[0004] However, existing agricultural machinery that uses seedling trays for planting seedlings (such as seedling throwing machines or pot seedling transplanting machines) has some problems when recovering seedling trays. For example, when the existing lever-top type seedling throwing machines are throwing seedlings, the seedling trays are attached to the rotating drum for recovery. This conveying method requires high precision, has a complex structure, and has a high manufacturing cost. For another example, the seedling tray recovery belt of the existing seedling throwing machine is usually arranged on the extension line of the transmission direction of the seedling conveyor belt. This structure is limited by the size of the space and is not conducive to the simplification of the equipment and the removal of the seedling trays. In addition, there are also such planting machines that do not have a seedling tray recovery device at the end of the seedling tray recovery. The seedling trays are usually collected by letting the seedling trays fall by themselves, which is not only not conducive to the overall removal, but also easy to fall into the ground and cannot be recovered. Summary of the invention

[0005] The purpose of the present invention is to provide a simple and reliable seedling tray rotating device to solve the problem that the recovery device structure is relatively complex and the seedling tray recovery is difficult in the prior art.

[0006] In a first aspect, the present application provides a seedling tray rotating device, comprising:

[0007] The seedling tray conveying component has a starting end and an ending end at both ends;

[0008] A seedling tray rotation limiting assembly is arranged on the outer side of the end end of the seedling tray conveying assembly;

[0009] A seedling tray rotary conveying assembly, with two ends respectively comprising a fixed end and a release end, wherein the fixed end is located below the seedling tray rotary limiting assembly, and the release end is located below the seedling tray conveying assembly;

[0010] The seedling tray receiving assembly is arranged below the releasing end of the seedling tray rotating conveying assembly.

[0011] Optionally, the device further comprises:

[0012] The seedling tray guide plate is located at the starting end of the seedling tray conveying assembly. The seedling tray guide plate is placed obliquely and the lower end is close to the upper surface of the seedling tray conveying assembly.

[0013] Optionally, the seedling tray rotary conveying assembly includes a first rotary shaft and a second rotary shaft; the first rotary shaft is located at the release end, and the second rotary shaft is located at the fixed end;

[0014] The first rotating shaft is sleeved with a plurality of first pulleys rotating with the shaft:

[0015] The second rotating shaft is sleeved with a plurality of second pulleys corresponding to the first pulleys; the second pulleys rotate along with the second rotating shaft;

[0016] The first pulley and the second pulley corresponding to each other are connected by a rotary belt transmission.

[0017] Optionally, a driving pulley is provided at one end of the first rotating shaft or the second rotating shaft.

[0018] Optionally, among the first pulleys, a diameter of at least one of the first pulleys is larger or smaller than a diameter of the first pulleys on both sides thereof.

[0019] Optionally, the diameters of the first pulleys on both sides of the first pulley located at the center of the first rotating shaft are symmetrically reduced or increased.

[0020] Optionally, the seedling tray rotary conveying assembly further comprises a cleaning shaft; the cleaning shaft is arranged on one side of the first rotary shaft and / or the second rotary shaft; the cleaning shaft is provided with a plurality of mud scraping nails corresponding to the first pulley or the second pulley.

[0021] Optionally, shaft seat plates are respectively provided at both ends of the first rotating shaft.

[0022] Optionally, the seedling tray guide plate includes a first inclined plate and a second inclined plate which are at a certain angle to each other; the first inclined plate is located above the second inclined plate; the angle between the first inclined plate and the horizontal direction is greater than 45°; the angle between the second inclined plate and the horizontal direction is smaller than the angle between the first inclined plate and the horizontal direction.

[0023] Optionally, the seedling tray receiving assembly includes at least one fixing member for fixing the seedling tray tray, a seedling tray tray rotatably connected to the fixing member and used to receive the seedling tray, and at least one elastic member arranged under the seedling tray tray and used to act as a buffer when receiving the seedling tray.

[0024] Optionally, the device further comprises:

[0025] A transmission assembly is arranged on one side of the seedling tray conveying assembly;

[0026] The transmission assembly includes a gear box; an output shaft of the gear box is connected to the rotating shaft at the end of the seedling tray conveying assembly; another output shaft of the gear box is connected to a driving wheel; and the driving wheel is connected to the driving pulley through a synchronous belt.

[0027] Optionally, the second pulleys are evenly arranged on the second rotating shaft; the second pulleys are fixed in the radial direction of the second rotating shaft by a flat key, and a retaining spring is arranged in the axial direction.

[0028] In a second aspect, the present application provides an agricultural operation machine, comprising the seedling tray rotating device described in the first aspect.

[0029] The seedling tray rotating device provided in this application has the following beneficial effects:

[0030] 1. Use belt transmission, which has simple structure, easy implementation and strong reliability.

[0031] Second, friction is provided by multiple sets of pulleys and belts, and different combinations of pulley diameters are used to make the seedling trays take irregular shapes during the recovery process. For example, the position of the seedling trays is fixed in a U shape, which makes the seedling trays more stable during transportation and facilitates orderly recovery.

[0032] 3. The seedling tray rack adopts elastic buffering settings to prevent hard collisions between seedling trays resulting in position differences between each other, making the recovery of seedling trays more orderly.

[0033] 4. The conveying belt and the recovery belt are installed in staggered movement directions. The movement of the belts generates friction with the seedling trays, making the seedling trays less likely to fall off and highly reliable.

[0034] 5. Install a gear disk on one side of the large pulleys on both sides to increase the friction with the seedling disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0036] Figure 1 This is a structural schematic diagram of a seedling tray rotating device of the present application;

[0037] Figure 2 This is a structural schematic diagram of a seedling tray rotating conveying assembly in a seedling tray rotating device of the present application;

[0038] Figure 3 for Figure 2 A schematic structural diagram of the first rotary shaft in one embodiment;

[0039] Figure 4 This is a schematic diagram of the structure of a mud scraper nail in one embodiment of the present application;

[0040] Figure 5 This is a schematic structural diagram of a mud scraper nail in another embodiment of the present application;

[0041] Figure 6 This is a schematic structural diagram of a seedling tray guide plate in a seedling tray rotating device of the present application under an embodiment;

[0042] Figure 7 This is a schematic structural diagram of a seedling tray receiving assembly in a seedling tray rotating device of the present application under an embodiment;

[0043] Figure 8 This is a schematic structural diagram of a seedling tray rotating device according to another embodiment of the present application;

[0044] Fig. 9 This is a schematic diagram of the connection structure between the seedling tray rotating device and the agricultural operation machinery provided by the present application under an embodiment;

[0045] Fig.10 for Fig. 9 Schematic diagram of the local structure of middle A;

[0046] Among them, 1-seedling tray guide plate, 11-baffle, 12-bending edge, 13-first inclined plate, 14-second inclined plate, 2-seedling tray conveying assembly, 3-seedling tray rotation limiting assembly, 4-seedling tray rotation conveying assembly, 41-first rotating shaft, 42-second rotating shaft, 43-first pulley, 44-second pulley, 45-rotating belt, 46-driving pulley, 47-cleaning shaft, 48-mud scraping nail, 49-shaft seat plate, 5-seedling tray receiving assembly, 51-fixing part, 52-elastic part, 53-seedling tray tray, 6-transmission assembly, 61-gear box, 62-driving wheel, 63-synchronous belt. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] The seedling tray in the present application not only refers to the seedling tray for placing rice seedlings in rice planting. When the present invention is applied to a pot seedling transplanting machine, the seedling tray also refers to a tray for placing seedlings of vegetables and the like. This article only uses the seedling tray for rice seedlings as an example for explanation, and it should be considered that the disclosed structure is also applicable to pot seedling transplanting machines.

[0049] See also Figure 1 , is a structural schematic diagram of a seedling tray rotating device of the present application;

[0050] Depend on Figure 1 It can be seen that the embodiment of the present application provides a seedling tray rotating device, comprising:

[0051] The seedling tray conveying component 2 has a starting end and an ending end at both ends; in the present embodiment, the seedling tray conveying component 2 is used to convey the seedling tray full of seedlings to the seedling taking device 9, so that the seedling taking device 9 takes the seedlings for subsequent processing. The starting end and the ending end defined in the present application correspond to the position of the seedling tray on the seedling tray conveying component 2, and do not specifically limit a certain end of the conveying component to the starting end or the ending end; in addition, a rotating shaft is provided at the starting end and the ending end, one of the rotating shafts can be used as a driving shaft, and the driving direction is the direction of the seedling tray from the starting end to the ending end. There can be many types of driving sources, and there is no restriction.

[0052] The seedling tray rotation limit assembly 3 is arranged on the outer side of the end end of the seedling tray conveying assembly 2, and covers the end end of the seedling tray conveying assembly 2; when the seedling tray moves to the end end of the seedling tray conveying assembly 2, the front end of the seedling tray contacts the inner wall of the seedling tray rotation limit assembly 3, and continues to slide along the rotation direction of the end end of the seedling tray conveying assembly 2 in the gap between the seedling tray rotation limit assembly 3 and the seedling tray conveying assembly 2 under the limiting action of the inner wall; when the front end of the seedling tray rotates to the fixed end of the seedling tray rotation limit assembly 4, it flips 180° under the guiding action of the seedling tray rotation limit assembly 3; therefore, in this embodiment, the seedling tray rotation limit assembly 3 simultaneously limits and guides the seedling tray, and the distance between it and the end end of the seedling tray conveying assembly should be close to the thickness of the seedling tray to achieve the limiting effect. It should be noted that when the seedling tray rotating device in the present application is used on a seedling throwing machine, the other end of the seedling tray rotating limit assembly 3 is usually connected to the seedling taking device 9, or is integrally formed with the seedling taking device 9 (such as the seedling separator in the seedling throwing machine) to ensure the stability of the distance between the seedling tray conveying assembly 2.

[0053] It should be noted that the seedling tray in the present invention carries the seedlings before flipping. When the seedling tray starts to flip under the action of the rotary limit assembly, the seedlings and the seedling tray are gradually separated by the seedling taking device. After flipping 180°, the seedling tray achieves complete separation of the seedlings and the seedling tray.

[0054] The seedling tray rotary conveying assembly 4 is used to convey and uniformly recover the seedling trays after being reversed 180°. Its two ends are respectively a fixed end and a release end. The fixed end is located below the seedling tray rotary limiting assembly 3, and can receive the reversed seedling tray and make the seedling tray move forward with the conveyor belt. The release end is located below the seedling tray conveying assembly 2, and releases the seedling tray that arrives here to the seedling tray receiving assembly 5. In this embodiment, since the entire seedling tray rotary conveying assembly 4 is located below the seedling tray conveying assembly 2 and is opposite to the conveying direction of the seedling tray conveying assembly 2, the space below can be effectively utilized, and the operator can place the seedling tray and take the empty seedling tray on the same side, which makes it easier to take.

[0055] Depend on Figure 4 It can also be known that in a feasible embodiment, the device also includes a seedling tray guide plate 1, which is located at the starting end of the seedling tray conveying assembly 2. The seedling tray guide plate 1 is tilted and the lower end is close to the upper surface of the seedling tray conveying assembly 2, which is used to guide the seedling tray placed thereon, so that when the operator places the seedling tray on the upper part of the seedling tray guide plate 1, the seedling tray can slide to the starting end of the seedling tray conveying assembly 2 by its own gravity and guiding effect.

[0056] Depend on Figure 4 It can also be known that in a feasible embodiment, the device also includes a seedling tray receiving assembly 5, which is arranged below the release end of the seedling tray rotating and conveying assembly 4, and is used to receive empty seedling trays and collect multiple seedling trays. One side of the seedling tray receiving assembly 5 is fixed on an operating machine (such as a seedling throwing machine, a pot seedling transplanting machine), and the other side is arranged close to the release end to reduce the falling height of the seedling tray and prevent excessive deviation between the seedling trays from causing unevenness that is not conducive to picking up.

[0057] It can be known from the above technical scheme that the working process of a seedling tray rotating device disclosed in the present application can be: the operator places the seedling tray filled with seedlings on the upper part of the seedling tray guide plate 1, and the seedling tray slides down to the seedling tray conveying assembly 2 under the action of the seedling tray guide plate 1 and its own gravity, and moves with the seedling tray conveying assembly 2; when the seedling tray reaches the other end of the seedling tray conveying assembly 2, the seedling taking device 9 arranged on the other side clamps the seedlings in the seedling tray, and at the same time, the seedling tray flips downward under the action of the seedling tray rotation limit assembly 3, reaches the seedling tray rotation conveying assembly 4 and moves along its movement direction; when the entire empty seedling tray moves to the release end of the seedling tray rotation conveying assembly 4, it naturally falls above the seedling tray receiving assembly 5, and the recovery of one seedling tray is completed; when the next seedling tray is recovered, it will eventually fall above the previous seedling tray.

[0058] Further, by Figure 2 It can be seen that in a feasible embodiment, the specific structure of the seedling tray rotary conveying assembly 4 includes a first rotary shaft 41 and a second rotary shaft 42; wherein the first rotary shaft 41 is located at the release end, and the second rotary shaft 42 is located at the fixed end; the first rotary shaft 41 and the second rotary shaft 42 are arranged parallel to each other;

[0059] The first rotating shaft 41 is sleeved with a plurality of first pulleys 43 rotating therewith: the number of the first pulleys 43 may be three or more. Taking three first pulleys as an example, one of the first pulleys is located at the center of the first rotating shaft 41, and the other two first pulleys are symmetrically distributed relative to the center.

[0060] The second rotating shaft 42 is sleeved with a plurality of second pulleys 44 corresponding to the first pulleys 43, and the corresponding means that they form a group with each other and have a transmission relationship; the second pulleys 44 rotate with the second rotating shaft 42;

[0061] The first belt pulley 43 and the second belt pulley 44 are connected by a revolving belt 45. The cross-section of the first belt pulley and the second belt pulley is a groove structure, and the revolving belt is arranged in the groove. The revolving belt 45 not only connects the two belt pulleys, but also provides friction force for the seedling tray to move forward.

[0062] One end of the first rotating shaft 41 or the second rotating shaft 42 is provided with a driving pulley 46 , which can be connected to the driving pulley 46 through an external driving source to control the conveying speed of the seedling tray rotary conveying assembly 4 .

[0063] Furthermore, by Figure 3In an embodiment shown, among several first pulleys 43, the diameter of at least one of the first pulleys 43 is larger than or smaller than the diameter of the first pulleys 43 on both sides thereof, and the first pulley located in the middle may be one, two or more. For example, the outer diameters of the first pulleys are respectively: 80mm, 80mm, 60mm, 80mm, 80mm; or 80mm, 80mm, 60mm, 60mm, 80mm, 80mm; such a design enables the seedling tray to be squeezed and fixed by the first pulleys of different diameters when passing through, and is no longer transported in a flat surface, but is transported in a concave and convex form, such as a U-shape, an inverted U-shape, a W-shape or other shapes, which not only increases the stability of the seedling tray during movement and prevents the seedling tray from falling off, but also ensures that the moving position of each seedling tray is basically consistent, and can be stacked in order when falling at the release end. Among them, a more preferred situation is that the diameters of the first pulleys 43 on both sides of the first pulleys 43 located at the center of the first rotating shaft 41 are symmetrically reduced or increased, so that the seedling tray is in a U-shape with the opening facing downward or upward during the conveying process, which has a more stable conveying effect. Moreover, during the release of the seedling tray, the seedling tray maintains a certain shape such as a U-shape, which can ensure that when the seedling tray is stacked with the previous seedling tray, the upper and lower contact points or surfaces are limited when the first instant contact is made, and the overall contact of the front and rear seedling trays has a sequence, which is conducive to orderly fitting on the pot body seedling tray from top to bottom, rather than the overall lower surface contacting or pushing the entire upper surface of the previous seedling tray, to avoid uneven stacking of the seedling trays.

[0064] It should be noted that Figure 3 The embodiment only shows the case where the number of the first pulleys is three. When the number of the first pulleys increases, the outer diameter of the first pulley may have multiple steps, but the overall seedling tray can still be transported in a U-shape. For example, when there are five pulleys, the outer diameters are 100mm, 80mm, 60mm, 80mm, and 100mm respectively, and there are three steps. When the outer diameters are 80mm, 80mm, 60mm, 80mm, and 80mm respectively, there are two steps.

[0065] In some embodiments, the second pulley 44 can also be evenly arranged on the second rotating shaft 42 to improve the stability of the seedling tray during transportation; the second pulley 44 is fixed in the radial direction of the second rotating shaft 42 by a flat key, and a retaining spring is arranged axially, so that the connection position between the second pulley and the second rotating shaft has higher strength and toughness.

[0066] Depend on Figure 2In a feasible embodiment shown, the seedling tray rotary conveying assembly 4 also includes a cleaning shaft 47; the cleaning shaft 47 can be optionally arranged on one side of the first rotary shaft 41 and / or the second rotary shaft 42 according to actual needs; the cleaning shaft 47 is provided with a plurality of scraper nails 48 corresponding to the first pulley 43 and / or the second pulley 44; one end of the scraper nail 48 is connected to the cleaning shaft 47, and the other end is close to the wheel surface of the first pulley 43 or the second pulley 44 (usually a gap of 2mm). In this embodiment, the scraper nail 48 can remove foreign matter in the grooves of each pulley to prevent the rotary belt from falling out due to residual foreign matter and affecting the transmission operation; when the cleaning shaft is set at different positions, the structure of the corresponding scraper nail should also be appropriately adjusted according to other structures. Figure 4 The cleaning shaft shown is located below the rotating belt 45. If the scraper nail 48 wants to extend to the wheel surface of the second pulley, it needs to bypass the rotating belt 45, so the scraper nail 48 needs to be designed into a curved shape; Figure 5 The cleaning shaft shown is located inside the rotating belt 45. At this time, the scraper nails 48 are not blocked and can be set in a long strip shape.

[0067] In addition, the connection method between the scraper nail 48 and the cleaning shaft 47 in the present embodiment is not limited to one type. It should be understood that any connection structure that can achieve fixation can be used in the present embodiment. For example, it can be directly fixed by welding, or the installation hole for the scraper nail 48 can be processed on the cleaning shaft 47 in advance and the scraper nail 48 can be screwed in.

[0068] Furthermore, Figure 2 In the illustrated embodiment, shaft seat plates 49 are respectively provided at both ends of the first rotating shaft 41, and the shaft seat plates 49 are used to fix the first rotating shaft 41 on an operating machine (such as a rice seedling thrower) to ensure stability; on the other hand, the shaft seat plates 49 on both sides can limit the position of the seedling tray after flipping, ensuring that each empty seedling tray maintains a consistent position when being transported, which is conducive to orderly recovery.

[0069] Further, by Figure 6 It can be seen that in a feasible embodiment, baffles 11 are provided on both sides of the above-mentioned seedling tray guide plate 1, and the distance between the baffles 11 on both sides is greater than the width of the seedling tray, preferably slightly greater than the width, which makes it easier for the seedling tray to be placed in the seedling tray guide plate 1; the top of the baffle 11 is provided with a bent edge 12 folded outward, so that the width between the bent edges 12 is greater than the width between two adjacent rows of pots of the seedling tray, which can prevent the seedling tray from being stuck above the baffle of the seedling tray guide plate, thereby ensuring the continuity of the seedling tray transportation.

[0070] Depend on Figure 6It can also be known that, in some embodiments, the seedling tray guide plate 1 includes a first inclined plate 13 and a second inclined plate 14 which are at a certain angle to each other; the first inclined plate 13 is located above the second inclined plate 14; the angle between the first inclined plate 13 and the horizontal direction is greater than 45°, which can increase the sliding speed of the seedling tray, so that it can reach the bottom faster and improve work efficiency; the angle between the second inclined plate 14 and the horizontal direction is smaller than the angle between the first inclined plate 13 and the horizontal direction. The angle difference between the two inclined plates makes the seedling tray slide smoothly, making the sliding more stable and avoiding damage to the seedlings due to collision.

[0071] Further, by Figure 7 It can be seen that in a feasible embodiment, the seedling tray receiving assembly 5 includes at least one fixing member 51 for fixing the seedling tray 53, a seedling tray 53 rotatably connected to the fixing member 51 and used to receive the seedling tray, and at least one elastic member 52 disposed below the seedling tray 53 and used to buffer the seedling tray. The fixing member 51 is fixedly connected to the seedling throwing machine; the elastic member 52 can prevent the hard collision between the seedling trays from causing the positions to change with each other; the size of the seedling tray should be set according to the size of the seedling tray to ensure the stable placement of the seedling tray.

[0072] In this embodiment, since an elastic member is provided to support the seedling tray, the seedling tray can be set in advance as follows: Figure 7 The inclined upward form shown allows the seedling tray to contact the seedling tray pallet in advance, ensuring that the seedling tray slides smoothly into the seedling tray pallet; and, when there are multiple seedling trays on the seedling tray pallet, the gravity of the seedling tray will also cause the force on the elastic member to slightly decrease. Combined with the thickness of the seedling tray, the falling height of each newly inserted seedling tray can be made basically the same, so that they slide in under similar working conditions, which is more conducive to forming an orderly arrangement of the seedling trays.

[0073] In the present application, the conveying of the seedling tray includes a seedling tray conveying assembly 2 and a seedling tray rotary conveying assembly 4. In order to ensure the continuity and smooth connection of the seedling tray conveying process, the linear speeds of the two conveying assemblies need to be the same. For this purpose, the driving sources of the two conveying assemblies can be set separately, or they can be uniformly controlled by a transmission mechanism; for example, Figure 8 In one embodiment shown, the device further comprises:

[0074] The transmission assembly 6 is arranged on one side of the seedling tray conveying assembly 2;

[0075] The transmission assembly 6 includes a gear box 61; an output shaft of the gear box 61 is connected to the rotating shaft at the end of the seedling tray conveying assembly 2; another output shaft of the gear box 61 is connected to the driving wheel 62; the driving wheel 62 is connected to the driving pulley 46 through a synchronous belt 63.

[0076] In the above embodiment, the transmission component 6 provides the function of driving the two conveying components together. Specifically, the two output shafts of the gear box are respectively connected to the power shafts of the two conveying components, and then the speeds of the two conveying components are adjusted to be consistent through the transmission ratio set by the gear box. Finally, the input shaft on the other side of the gear box is connected to the external driving source. In this way, the movement of the above-mentioned two conveying components is driven simultaneously by an external driving source; and at this time, the problem of speed difference caused by separate driving can be avoided.

[0077] It can be known from the above technical scheme that the present application provides a seedling tray rotating device, including a seedling tray conveying assembly, the two ends of which are a starting end and an ending end respectively; a seedling tray rotating limit assembly, which is arranged on the outside of the ending end of the seedling tray conveying assembly; a seedling tray rotating conveying assembly, the two ends of which are a fixed end and a release end respectively, the fixed end is located below the seedling tray rotating limit assembly, and the release end is located below the seedling tray conveying assembly. The present application provides friction through multiple sets of pulleys and belts, and adopts a combination of different pulley diameters, so that the seedling tray is irregularly shaped during the recovery process, for example, the position of the seedling tray is fixed in a U shape, so that the seedling tray is more stable during the conveying process, which is conducive to orderly recovery; the seedling tray receiving frame adopts an elastic member buffering setting to prevent the hard collision between the seedling trays from causing a position difference between each other, so that the recovery of the seedling trays is more orderly, which solves the problem of the complicated structure of the recovery device and the difficulty of recovering the seedling trays in the prior art.

[0078] The present application also provides an agricultural operation machine, including the seedling tray rotating device described in the previous embodiments, wherein the structure and functional role of the seedling tray rotating device can be found in the previous description of the present application and will not be repeated here.

[0079] Fig. 9 , Fig.10A schematic diagram of the connection structure between the seedling tray rotating device provided by the present application and an agricultural operation machine under an embodiment is shown (taking a seedling throwing machine as an example). It can be seen from the figure that in the seedling tray rotating device of the present application, the seedling tray guide plate 1 is installed on the main frame 7 by welding or the like, the starting end of the seedling tray conveying assembly 2 is installed on the main frame 7 through a bearing seat, and the ending end is installed on the main frame 7 through a shaft sleeve; the seedling tray rotation limit assembly 3 is arranged at the ending end of the seedling tray conveying assembly 2, and is integrally formed with the seedling taking device 9 on the other side; the seedling tray rotation conveying assembly 4 is arranged at the lower part of the seedling tray conveying assembly, and is arranged The mounting plate is installed on the main frame 7; the structural form of the main frame 7 should be adaptively set according to the arrangement of the above-mentioned structures to ensure that the above-mentioned components are fixed thereto, and the connection between the main frame 7 and the head 8 is a sliding connection. The main frame 7 can move in the vertical direction relative to the head 8 and be fixed at a certain height, thereby adjusting the various structures of the seedling tray rotating device located on the main frame 7; in addition, the seedling tray receiving assembly 5 is installed on the chassis of the head 8, and when the main frame 7 is lowered to the lowest position, the distance between the seedling tray receiving assembly 5 and the release end of the seedling tray rotating conveying assembly is closest.

[0080] Among them, the agricultural working machinery is not limited to one type. For example, the seedling tray rotating device described in this application can be installed on a rice transplanter or a pot seedling transplanting machine. It should be understood that other agricultural working machinery that needs to rotate the seedling tray is also within the protection scope of this application.

[0081] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0082] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A seedling tray rotating device, characterized in that: include: The seedling tray conveying component (2) has two ends, namely a starting end and an ending end; A seedling tray rotation limiting assembly (3) is arranged on the outer side of the end of the seedling tray conveying assembly (2); A seedling tray rotary conveying assembly (4), having two ends respectively comprising a fixed end and a release end, wherein the fixed end is located below the seedling tray rotary limiting assembly (3), and the release end is located below the seedling tray conveying assembly (2); A seedling tray receiving assembly (5) is arranged below the release end of the seedling tray rotary conveying assembly (4); The seedling tray rotary conveying assembly (4) comprises a first rotary shaft (41) and a second rotary shaft (42); the first rotary shaft (41) is located at the release end, and the second rotary shaft (42) is located at the fixed end; The first rotating shaft (41) is sleeved with a plurality of first pulleys (43) that rotate along with the shaft: The second rotating shaft (42) is sleeved with a plurality of second pulleys (44) corresponding to the first pulleys (43); the second pulleys (44) rotate along with the second rotating shaft (42); The first belt pulley (43) and the second belt pulley (44) are connected to each other by a rotating belt (45); Among the first pulleys (43), the diameter of at least one of the first pulleys (43) is larger or smaller than the diameters of the first pulleys (43) on both sides thereof.

2. A seedling tray rotating device according to claim 1, characterized in that: Also includes: The seedling tray guide plate (1) is located at the starting end of the seedling tray conveying assembly (2); the seedling tray guide plate (1) is placed at an angle and the lower end is close to the upper surface of the seedling tray conveying assembly (2).

3. A seedling tray rotating device according to claim 1, characterized in that: The seedling tray rotary conveying assembly (4) further comprises a cleaning shaft (47); the cleaning shaft (47) is arranged on one side of the first rotary shaft (41) and / or the second rotary shaft (42); and the cleaning shaft (47) is provided with a plurality of mud scraping nails (48) corresponding to the first belt wheel (43) and / or the second belt wheel (44).

4. The seedling tray rotating device according to claim 1, characterized in that: Axle seat plates (49) are respectively provided at both ends of the first rotary shaft (41).

5. The seedling tray rotating device according to claim 2, characterized in that: The seedling tray guide plate (1) comprises a first inclined plate (13) and a second inclined plate (14) which are at a certain angle to each other; the first inclined plate (13) is located above the second inclined plate (14); the angle between the first inclined plate (13) and the horizontal direction is greater than 45°; and the angle between the second inclined plate (14) and the horizontal direction is smaller than the angle between the first inclined plate (13) and the horizontal direction.

6. The seedling tray rotating device according to claim 1, characterized in that: The seedling tray receiving assembly (5) comprises at least one fixing member (51) for fixing a seedling tray (53), a seedling tray (53) rotatably connected to the fixing member (51) and used for receiving the seedling tray, and at least one elastic member (52) arranged below the seedling tray (53) and used for buffering when receiving the seedling tray.

7. The seedling tray rotating device according to claim 1, characterized in that: One end of the first rotating shaft (41) or the second rotating shaft (42) is provided with a driving pulley (46), and the device further comprises: A transmission assembly (6) is arranged on one side of the seedling tray conveying assembly (2); The transmission assembly (6) comprises a gear box (61); an output shaft of the gear box (61) is connected to a rotating shaft at the end of the seedling tray conveying assembly (2); another output shaft of the gear box (61) is connected to a driving wheel (62); and the driving wheel (62) is connected to the driving pulley (46) via a synchronous belt (63).

8. The seedling tray rotating device according to claim 1, characterized in that: The second pulleys (44) are evenly arranged on the second rotating shaft (42); the second pulleys (44) are fixed in the radial direction of the second rotating shaft (42) by a flat key, and a retaining spring is arranged in the axial direction.

9. An agricultural machine, characterized in that: It comprises the seedling tray rotating device as described in any one of claims 1 to 8.

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