Clamping and pulling type seedling taking device for rape pot seedlings

Abstract

The utility model relates to a clamping and pulling type seedling taking device for oilseed rape pot seedlings, and relates to the technical field of oilseed rape planting. Comprising a supporting structure, a chain row conveying mechanism, a pressure plate recycling mechanism, a transmission system, a seedling pulling mechanism and a seedling clamping mechanism, the chain row conveying mechanism is arranged in the middle of the supporting mechanism, the pressure plate recycling mechanism is arranged above the chain row conveying mechanism, the seedling pulling mechanism is located on one side of the supporting mechanism, and the seedling clamping mechanism is arranged in the middle of the seedling pulling mechanism. The transmission system is in transmission connection with the chain row conveying mechanism, the seedling pulling mechanism and the seedling clamping mechanism and used for providing power for conveying, seedling pulling and seedling clamping of the seedling trays. According to the utility model, a seedling tray conveying function and a clamping and pulling seedling taking function are linked, so that the device takes seedlings orderly and accurately, and the efficient seedling taking operation effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of rapeseed planting, in particular to a rapeseed pot seedling clamping and pulling seedling device. Background Art

[0002] Rapeseed is the largest oil crop in my country. Improving the mechanization of rapeseed production is of great significance to ensuring national oil security, enhancing agricultural comprehensive productivity and promoting agricultural modernization. At present, rapeseed seedling transplanting has the advantages of short greening time, increased production and income, and ease of crop rotation, and has great development potential.

[0003] Although rapeseed mechanical transplanting technology and equipment have been rapidly developed and applied, the problem of seedling retrieval is still one of the key problems hindering the automation of rapeseed transplanting. At present, rapeseed transplanting mainly includes blanket seedling transplanting and pot seedling transplanting. Blanket seedling transplanting is prone to root loss and takes a long time to regreen, which is not conducive to the connection of multiple cropping systems such as rice-oil and rice-rice-oil in the south. Rapeseed pot seedling transplanting has a low mechanization rate, complex structure, and poor seedling retrieval effect.

[0004] Therefore, how to adopt the double-cam clamping and pulling seedling removal technology and design a rapeseed pot seedling clamping and pulling seedling removal device has become a technical problem that technical personnel in this field need to solve urgently. Utility Model Content

[0005] The utility model aims to design a rapeseed pot seedling clamping and pulling seedling device to solve the problems of low seedling pulling efficiency, high machine cost, complex structure and great damage in the above-mentioned existing rapeseed pot seedling pulling process.

[0006] To achieve the above-mentioned purpose, the utility model provides a rapeseed pot seedling clamping and pulling type seedling retrieval device, characterized in that it includes: a supporting structure, a chain conveying mechanism, a pressure plate recovery mechanism, a transmission system, a seedling pulling mechanism and a seedling clamping mechanism. The chain conveying mechanism is arranged in the middle of the supporting mechanism, the pressure plate recovery mechanism is arranged above the chain conveying mechanism, the seedling pulling mechanism is located on one side of the supporting mechanism, and the seedling clamping mechanism is arranged in the middle of the seedling pulling mechanism. The transmission system is respectively connected to the chain conveying mechanism, the seedling pulling mechanism and the seedling clamping mechanism for transmission, and is used to provide power for the transportation, pulling and clamping of the seedling tray.

[0007] Furthermore, the supporting structure includes a supporting base plate, a left supporting side plate, a right supporting side plate and a recovery bar support plate, the left supporting side plate and the right supporting side plate are symmetrically arranged on both sides of the supporting base plate by bolt connection, and the recovery bar support plate is fixed between the left supporting side plate and the right supporting side plate by bolts; the recovery bar support plate is installed on the side of the supporting base plate close to the seedling pulling mechanism.

[0008] Furthermore, the chain conveying mechanism includes a chain, a large sprocket, a small sprocket, a chain drive shaft, a chain driven shaft, a torsion spring, a rocker arm, a one-way bearing, a cam plate, a cam drive shaft, a seedling plate, a small bearing and a bearing seat. The chain drive shaft is connected through the large sprocket, and the two ends of the chain drive shaft are respectively mounted on the left support side plate and the right support side plate through the bearing seat; the chain driven shaft is connected through the small sprocket, and the two ends of the chain driven shaft are respectively mounted on the left support side plate and the right support side plate through the bearing seat The large sprocket and the small sprocket are connected through a chain transmission, and the chain is tilted, and the seedling plate is clamped on the chain; the rocker arm is connected to the end of the chain drive shaft through a one-way bearing, and the torsion spring is sleeved on the chain drive shaft, and one end of the torsion spring is connected to the chain drive shaft, and the other end is connected to the rocker arm; the cam drive shaft passes through the connected cam plate and is fixed to the left support side plate and the right support side plate through a bearing seat, and the cam plate and the rocker arm realize surface contact driving of the rocker arm through a small bearing.

[0009] Furthermore, the pressure plate recovery mechanism includes a pressure plate component 1, a pressure plate component 2 and a seedling tray recovery lever. The pressure plate component 1 is symmetrically installed on the upper ends of the left support side plate and the right support side plate by bolts, and the pressure plate component 2 is symmetrically installed on the lower ends of the left support side plate and the right support side plate by bolts. One end of the seedling tray recovery lever is fixed to the support bottom plate and is located between the left support side plate and the right support side plate. The circular hole on the seedling tray recovery lever is set on the chain drive shaft through a bearing.

[0010] Furthermore, the transmission system includes a motor, a driving sprocket, a chain, a driven sprocket, an intermediate transmission shaft, a pinion, a large toothed disc, a fixed shaft and a connecting screw. The output end of the motor is connected to the driving sprocket, the driving sprocket is connected to the cam plate drive shaft and is symmetrically installed on both sides of the left support side plate and the right support side plate. The driving sprocket is connected to the driven sprocket through a chain. The intermediate transmission shaft is fixed to the seedling pulling mechanism through a bearing seat, and a driven sprocket and a pinion are respectively installed at both ends of the intermediate transmission shaft. Both ends of the fixed shaft are connected to the seedling pulling mechanism. The large toothed disc is installed at both ends of the fixed shaft through bearing 2 and meshes with the pinion. The large toothed discs on both sides are fixed by connecting screws.

[0011] Furthermore, the seedling pulling mechanism includes a left cam slot plate, a right cam slot plate, a tension spring, a tension spring mounting frame, a cam slot bearing, a long bearing, a slide rail 1, a slider 1, a seedling pulling frame 1, a seedling pulling frame 2 and a fixed frame. The left cam slot plate and the right cam slot plate are symmetrically fixed on the fixed frame and are connected to both ends of the fixed shaft by bolts. Cam slot bearings are sleeved at both ends of the seedling pulling frame 1 and the seedling pulling frame 2, and the cam slot bearings are respectively embedded in the cam slots of the left cam slot plate and the right cam slot plate. Long bearings are sleeved at both ends of the seedling pulling frame 1 and the seedling pulling frame 2, and the long bearings are embedded in the rectangular slot of the large toothed disk; the slider 1 is connected to the outer walls of the side plates at both ends of the seedling pulling frame, and cooperates with a slide rail 1 fixedly connected to the large toothed disk; the tension spring mounting frame is fixed to the outer side of the large toothed disk by bolts, and the tension spring is connected to the end of the seedling pulling frame to provide tension.

[0012] Furthermore, the seedling clamping mechanisms are provided in multiple rows, and the seedling clamping mechanisms in two adjacent rows are arranged in a staggered manner.

[0013] Furthermore, the seedling clamping mechanism includes a left seedling clamp, a right seedling clamp, a pin, a connecting plate, a Y-shaped joint, a seedling clamping rod, a compression spring, a seedling clamping push rod, a cam contact bearing, a seedling clamping cam, a second slider, a second slide rail and a gasket, the left seedling clamp and the right seedling clamp are fixed on the first seedling pulling frame and the second seedling pulling frame by pins, one end of the connecting plate is respectively connected to the left seedling clamp and the right seedling clamp through a pin, the other end is connected to the Y-shaped joint, the Y-shaped joint is connected to one end of the seedling clamping rod, the other end of the seedling clamping rod is connected to the seedling clamping push rod, the compression spring is located between the seedling clamping push rod and the seedling pulling frame and is sleeved on the seedling clamping pull rod, the seedling clamping cam is symmetrically arranged on the fixed shaft, the brackets at both ends of the seedling clamping push rod are sleeved with cam contact bearings, the cam contact bearings are in contact with the seedling clamping cam, the gasket is welded to both sides of the seedling clamping push rod and is connected to the second slider by bolts, and the second slider respectively cooperates with the second slide rails arranged on the first seedling pulling frame and the second seedling pulling frame.

[0014] The beneficial effects of the utility model are:

[0015] (1) The utility model adopts a chain intermittent conveying method to convey the seedling tray. When the device is working, the cam driving shaft drives the cam plate to rotate to drive the rocker arm to rotate, thereby driving the chain driving shaft to rotate to convey the seedling tray to the clamping and pulling position. Therefore, the utility model can accurately locate the seedling tray pot hole and clamp and pull the seedlings.

[0016] (2) The utility model adopts a clamping and pulling seedling removal method. By clamping the rapeseed stems, it can effectively avoid damage to the rapeseed seedlings in the seedling pot during the seedling removal process, and can complete the complex clamping and pulling actions. The cost of the machine is low. For the special seedling tray, the large toothed disc rotates one circle, and four seedling clamps and four seedling removals can be completed. That is, the large toothed disc rotates one circle to remove two rows of seedlings, and the seedling removal efficiency is high.

[0017] (3) The utility model adopts a cam structure to coordinate the seedling tray conveying and rapeseed pot seedling clamping and extraction functions, thereby ensuring the synchronization of conveying and seedling extraction operations. Compared with other seedling extraction mechanisms, the utility model significantly improves the operation quality and has the advantages of simple structure, reliable operation, and little damage to the seedling tray and pot seedlings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a rapeseed pot seedling clamping and pulling seedling device provided by the utility model;

[0019] Figure 2 A schematic diagram of the support structure provided by the utility model;

[0020] Figure 3 A schematic diagram of the chain conveying mechanism structure provided by the utility model;

[0021] Figure 4 A schematic diagram of the pressure plate recovery structure provided by the utility model;

[0022] Figure 5 A schematic diagram of the transmission system structure provided by the utility model;

[0023] Figure 6 The structure diagram of the seedling pulling mechanism provided by the utility model Figure 1 ;

[0024] Figure 7 The structure diagram of the seedling pulling mechanism provided by the utility model Figure 2 ;

[0025] Figure 8 A schematic diagram of the structure of the seedling pulling rack provided by the utility model;

[0026] Fig. 9 The present invention is a schematic structural diagram of the seedling taking mechanism provided by the present invention.

[0027] In the figure: 1 is a supporting structure; 2 is a chain conveying mechanism; 3 is a pressure plate recovery mechanism; 4 is a transmission system; 5 is a seedling pulling mechanism; 6 is a seedling clamping mechanism; 7 is a left supporting side plate; 8 is a right supporting side plate; 9 is a supporting bottom plate; 10 is a recovery pick support plate; 11 is a chain driven shaft; 12 is a bearing seat; 13 is a small sprocket; 14 is a seedling tray; 15 is a chain; 16 is a large sprocket; 17 is a torsion spring; 18 is a chain drive shaft; 19 is a one-way bearing; 20 is a rocker arm; 21 is a small bearing; 22 is a cam plate; 23 is a cam drive shaft; 24 is a pressure plate component 1; 25 is a pressure plate component 2; 26 is a seedling tray recovery pick; 27 is a bearing 1; 28 is a chain; 29 is a driving sprocket; 30 is a motor; 31 is the driven sprocket; 32 is the intermediate transmission shaft; 33 is the small gear; 34 is the large toothed disc; 35 is the fixed shaft; 36 is the second bearing; 37 is the connecting screw; 38 is the left cam groove plate; 39 is the first slide rail; 40 is the first slider; 41 is the first seedling pulling frame; 42 is the second seedling pulling frame; 43 is the right cam groove plate; 44 is the fixed frame; 45 is the cam groove bearing; 46 is the tension spring; 47 is the tension spring hanging frame; 48 is the long bearing; 49 is the seedling clamping cam; 50 is the cam contact bearing; 51 is the seedling clamping push rod; 52 is the compression spring; 53 is the seedling clamping pull rod; 54 is the Y-type joint; 55 is the pin; 56 is the second slide rail; 57 is the second slider; 58 is the gasket; 59 is the connecting plate; 60 is the left seedling clamp; 61 is the right seedling clamp. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0031] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0032] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] like Figure 1-9 As shown, the utility model provides a rapeseed pot seedling clamping and pulling seedling removal device, comprising: a supporting structure 1, a chain conveying mechanism 2, a pressure plate recovery mechanism 3, a transmission system 4, a seedling pulling mechanism 5 and a seedling clamping mechanism 6, the chain conveying mechanism 2 is arranged in the middle of the supporting mechanism, the pressure plate recovery mechanism 3 is arranged above the chain conveying mechanism 2, the seedling pulling mechanism 5 is located on one side of the supporting mechanism, the seedling clamping mechanism 6 is arranged in the middle of the seedling pulling mechanism 5, the transmission system 4 is respectively connected with the chain conveying mechanism 2, the seedling pulling mechanism 6, and the seedling clamping mechanism 6 for providing power for the transportation, pulling and clamping of the seedling tray, one end of the transmission system 4 is connected with the power input end, and the power input drives the chain conveying mechanism 2 to transport the seedling tray 14 after passing through the transmission system 4, and after the seedling tray 14 is transported to the rapeseed pot seedling clamping and pulling position, the seedling clamping mechanism 6 and the seedling pulling mechanism 5 are driven to clamp and pull out the pot seedlings in the seedling tray 14, so as to realize the seedling taking function of the device, and the seedling tray 14 out of the seedlings is recovered to the pressure plate recovery mechanism 3.

[0034] The supporting structure 1 includes a supporting base plate 9, a left supporting side plate 7, a right supporting side plate 8 and a recovery bar support plate 10. The left supporting side plate 7 and the right supporting side plate 8 are symmetrically arranged on both sides of the supporting base plate 9 by bolt connection. The recovery bar support plate 10 is fixed between the left supporting side plate 7 and the right supporting side plate 8 by bolts; the recovery bar support plate 10 is installed on the side of the supporting base plate 9 close to the seedling pulling mechanism 5.

[0035] The chain conveying mechanism 2 includes a chain row 15, a large sprocket 16, a small sprocket 13, a chain row drive shaft 18, a chain row driven shaft 11, a torsion spring 17, a rocker arm 20, a one-way bearing 19, a cam plate 22, a cam drive shaft 23, a seedling plate 14, a small bearing 21 and a bearing seat 12. The chain row drive shaft 18 is connected through the large sprocket 16, and the two ends of the chain row drive shaft 18 are respectively installed on the left support side plate 7 and the right support side plate 8 through the bearing seat 12; the chain row driven shaft 11 is connected through the small sprocket 13, and the two ends of the chain row driven shaft 11 are respectively installed on the left support side plate 7 and the right support side plate 8 through the bearing seat 12 The large sprocket 16 and the small sprocket 13 are connected by a chain row 15, and the chain row 15 is tilted, and the seedling tray 14 is clamped on the chain row 15; the rocker arm 20 is connected to the end of the chain row drive shaft 18 through a one-way bearing 19, and the torsion spring 17 is sleeved on the chain row drive shaft 18, and one end of the torsion spring 17 is connected to the chain row drive shaft 18, and the other end is connected to the rocker arm 20; the cam drive shaft 23 passes through the cam disc 22 and is fixed to the left support side plate 7 and the right support side plate 8 through the bearing seat 12, and the cam disc 22 and the rocker arm 20 realize surface contact and drive the rocker arm 20 through the small bearing 21. The rotation of the cam drive shaft 23 drives the cam disc 22 to rotate, thereby driving the rocker arm 20 to swing, and under the action of the one-way bearing 19, the chain row drive shaft is driven to rotate, thereby driving the large sprocket 16 and the small sprocket 13 to rotate, driving the chain row 15 to move, and realizing the transportation of the seedling tray. Under the action of the torsion spring 17 , the rocker arm 20 is always in surface contact with the cam plate 22 through the small bearing 21 .

[0036] It should be noted that, in the present embodiment, the cam plate 22, the rocker arm 20, the torsion spring 17, the one-way bearing 19, and the small bearing 21 are all symmetrically distributed in two, so that the driving and sending of seedlings is more stable.

[0037] The pressure plate recovery mechanism 3 includes a pressure plate component 1 24, a pressure plate component 25 and a seedling tray recovery strip 26. The pressure plate component 1 24 is symmetrically installed on the upper ends of the left support side plate 7 and the right support side plate 8 by bolts, and the pressure plate component 25 is symmetrically installed on the lower ends of the left support side plate 7 and the right support side plate 8 by bolts. One end of the seedling tray recovery strip 26 is fixed on the support bottom plate 9 and is located between the left support side plate 7 and the right support side plate 8. The circular hole on the seedling tray recovery strip 26 is sleeved on the chain drive shaft 18 through a bearing 1 27. When the seedlings are clamped and pulled out, the seedling tray 14 is transported downward under the drive of the chain. At this time, the fixed seedling tray recovery strip is inserted into the middle of the lower end of the seedling tray to force the seedling tray to peel off the chain.

[0038] The transmission system 4 includes a motor 30, a driving sprocket 29, a chain 28, a driven sprocket 31, an intermediate transmission shaft 32, a pinion 33, a large toothed disc 34, a fixed shaft 35 and a connecting screw 37. The output end of the motor 30 is connected to the driving sprocket 29, and the driving sprocket 29 is connected to the driving shaft of the cam plate 22, and is symmetrically installed on both sides of the left supporting side plate 7 and the right supporting side plate 8. The driving sprocket 29 is connected to the driven sprocket 31 through the chain 28. The intermediate transmission shaft 32 is fixed to the seedling pulling mechanism 5 through a bearing seat 12, and the driven sprocket 31 and the pinion 33 are respectively installed at both ends of the intermediate transmission shaft 32. The two ends of the fixed shaft 35 are connected to the seedling pulling mechanism 5. The large toothed disc 34 is installed at both ends of the fixed shaft 35 through a bearing 2 36 and meshes with the pinion 33. The large toothed discs 34 on both sides are fixed by connecting screws 37.

[0039] It should be noted that, in this embodiment, the driving sprocket 29, the chain 28, the driven sprocket 31, the pinion 33, and the large toothed disc 34 are symmetrically distributed in two groups to ensure the stability of power transmission and avoid relative rotation of the large toothed discs 34 at both ends to cause errors.

[0040] The seedling pulling mechanism 5 includes a left cam slot plate 38, a right cam slot plate 43, a tension spring 46, a tension spring mounting frame 47, a cam slot bearing 45, a long bearing 48, a slide rail 39, a slider 40, a seedling pulling frame 41, a seedling pulling frame 42 and a fixing frame 44. The left cam slot plate 38 and the right cam slot plate 43 are symmetrically fixed on the fixing frame 44 and are connected to both ends of the fixed shaft 35 by bolts. Both ends of the seedling pulling frame 41 and the seedling pulling frame 42 are sleeved with cam slot bearings 45. The wheel groove bearing 45 is respectively embedded in the cam groove of the left cam groove plate 38 and the right cam groove plate 43. The two ends of the seedling pulling frame 1 41 and the seedling pulling frame 2 42 are sleeved with long bearings 48, and the long bearings 48 are embedded in the rectangular groove of the large toothed disc 34; the slider 1 40 is connected to the outer wall of the side plates at both ends of the seedling pulling frame, and cooperates with the slide rail 1 39 fixed to the large toothed disc 34; the tension spring hanging frame 47 is fixed to the outside of the large toothed disc 34 by bolts, and the tension spring 46 is connected to the end of the seedling pulling frame to provide tension. This seedling pulling mechanism 5 contains four evenly distributed seedling pulling frames, which can achieve four times of pulling in one circle. The seedling pulling frame 1 41 and the seedling pulling frame 2 42 correspond to the odd and even columns of the seedling pulling tray 14, respectively. In the process of pulling out the seedlings, due to the setting of the tension spring 46, the pulling force of pulling out the seedlings can be gradually increased, thereby reducing the damage to the rapeseed pot seedlings.

[0041] To further optimize the technical solution, the seedling clamping mechanism 6 is provided with multiple rows, and two adjacent rows of seedling clamping mechanisms 6 are arranged in a staggered manner. In this embodiment, the seedling taking device includes four groups of seedling pulling mechanisms 5 and four groups of seedling clamping mechanisms 6 arranged evenly around the circumference.

[0042] The seedling clamping mechanism 6 includes a left seedling clamp 60, a right seedling clamp 61, a pin 55, a connecting plate 59, a Y-type joint 54, a seedling clamping rod 53, a compression spring 52, a seedling clamping push rod 51, a cam contact bearing 50, a seedling clamping cam 49, a slider 57, a slide rail 56 and a gasket 58. The left seedling clamp 60 and the right seedling clamp 61 are fixed to the seedling pulling frame 1 41 and the seedling pulling frame 2 42 by pins 55. One end of the connecting plate 59 is connected to the left seedling clamp 60 and the right seedling clamp 61 respectively by pins 55, and the other end is connected to the Y-type joint 54. The Y-type joint 54 is connected to the seedling clamping rod 53. The first end of the seedling clamping rod 53 is connected to the seedling clamping push rod 51, the compression spring 52 is located between the seedling clamping push rod 51 and the seedling pulling frame and is sleeved on the seedling clamping rod 53, the seedling clamping cam 49 is symmetrically arranged on the fixed shaft 35, and the brackets at both ends of the seedling clamping push rod 51 are sleeved with cam contact bearings 50, the cam contact bearings 50 are in contact with the seedling clamping cam 49, the gasket 58 is welded to both sides of the seedling clamping push rod 51 and connected to the slider 2 57 by bolts, and the slider 2 57 is respectively matched with the slide rail 2 56 arranged on the seedling pulling frame 1 41 and the seedling pulling frame 2 42. Since the cam contact bearing 50 is in contact with the seedling clamping cam 49, the rotation of the seedling clamping cam 49 is driven by the fixed shaft 35, so that the seedling clamping push rod 51 can be moved up and down, thereby realizing the clamping and opening functions of the left seedling clamp 60 and the right seedling clamp 61, so as to complete the clamping of the rapeseed pot seedlings.

[0043] The utility model adopts a chain intermittent conveying method to convey the seedling tray. When the device is working, the cam drive shaft drives the cam plate to rotate to drive the rocker arm to rotate, thereby driving the chain drive shaft to rotate and convey the seedling tray to the clamping and pulling position. Therefore, the utility model can accurately locate the seedling tray pot hole and clamp and pull the seedlings. The utility model adopts a clamping and pulling seedling method. By clamping the rapeseed stem, it can effectively avoid damage to the rapeseed pot seedlings during the seedling removal process, and can complete the complex action of clamping and pulling. The machine cost is low. For the special seedling tray, the large toothed disc rotates one circle, and four seedling clamps and four seedlings can be completed, that is, the large toothed disc rotates one circle to take two rows of seedlings, and the seedling removal efficiency is high. The utility model adopts a cam structure to coordinate the seedling tray conveying and the rapeseed pot seedling clamping and pulling functions to ensure the synchronization of the conveying and seedling removal operations. Compared with other seedling removal mechanisms, the utility model has significantly improved operation quality, and has the advantages of simple structure, reliable operation, and little damage to the seedling tray pot seedlings.

[0044] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A rape seedling clamping and pulling device, characterized in that: include: A supporting structure, a chain conveying mechanism, a pressure plate recovery mechanism, a transmission system, a seedling pulling mechanism and a seedling clamping mechanism, wherein the chain conveying mechanism is arranged in the middle of the supporting mechanism, the pressure plate recovery mechanism is arranged above the chain conveying mechanism, the seedling pulling mechanism is located on one side of the supporting mechanism, and the seedling clamping mechanism is arranged in the middle of the seedling pulling mechanism. The transmission system is respectively connected to the chain conveying mechanism, the seedling pulling mechanism and the seedling clamping mechanism for providing power for the conveying, pulling and clamping of the seedling tray.

2. A rape seedling clamping and pulling device as claimed in claim 1, characterized in that: The supporting structure includes a supporting base plate, a left supporting side plate, a right supporting side plate and a recovery bar support plate. The left supporting side plate and the right supporting side plate are symmetrically arranged on both sides of the supporting base plate by bolt connection. The recovery bar support plate is fixed between the left supporting side plate and the right supporting side plate by bolts; the recovery bar support plate is installed on the side of the supporting base plate close to the seedling pulling mechanism.

3. A rape seedling clamping and pulling device as claimed in claim 2, characterized in that: The chain conveying mechanism comprises a chain row, a large sprocket, a small sprocket, a chain row driving shaft, a chain row driven shaft, a torsion spring, a rocker arm, a one-way bearing, a cam plate, a cam driving shaft, a seedling plate, a small bearing and a bearing seat. The chain row driving shaft is connected through the large sprocket, and two ends of the chain row driving shaft are respectively mounted on the left supporting side plate and the right supporting side plate through bearing seats; the chain row driven shaft is connected through the small sprocket, and two ends of the chain row driven shaft are respectively mounted on the left supporting side plate and the right supporting side plate through bearing seats; the large sprocket and the small sprocket are connected through the chain row transmission, and the chain row is inclined, and the seedling plate is clamped on the chain row; the rocker arm is connected to the end of the chain row driving shaft through a one-way bearing, the torsion spring is sleeved on the chain row driving shaft, and one end of the torsion spring is connected to the chain row driving shaft, and the other end is connected to the rocker arm; the cam driving shaft is fixed to the left supporting side plate and the right supporting side plate through the bearing seat after passing through the cam plate, and the cam plate and the rocker arm realize surface contact driving of the rocker arm through the small bearing.

4. A rape seedling clamping and pulling device as claimed in claim 3, characterized in that: The pressure plate recovery mechanism includes a pressure plate component 1, a pressure plate component 2 and a seedling tray recovery lever. The pressure plate component 1 is symmetrically installed on the upper ends of the left support side plate and the right support side plate by bolts, and the pressure plate component 2 is symmetrically installed on the lower ends of the left support side plate and the right support side plate by bolts. One end of the seedling tray recovery lever is fixed to the support bottom plate and is located between the left support side plate and the right support side plate. The circular hole on the seedling tray recovery lever is set on the chain drive shaft through a bearing.

5. A rape seedling clamping and pulling device as claimed in claim 4, characterized in that: The transmission system includes a motor, a driving sprocket, a chain, a driven sprocket, an intermediate transmission shaft, a pinion, a large toothed disc, a fixed shaft and a connecting screw. The output end of the motor is connected to the driving sprocket, and the driving sprocket is connected to the cam plate driving shaft and is symmetrically installed on both sides of the left supporting side plate and the right supporting side plate. The driving sprocket is connected to the driven sprocket through a chain, and the intermediate transmission shaft is fixed to the seedling pulling mechanism through a bearing seat, and a driven sprocket and a pinion are respectively installed at both ends of the intermediate transmission shaft, and both ends of the fixed shaft are connected to the seedling pulling mechanism, and the large toothed disc is installed at both ends of the fixed shaft through bearing 2 and meshes with the pinion, and the large toothed discs on both sides are fixed by connecting screws.

6. A rape seedling clamping and pulling device as claimed in claim 5, characterized in that: The seedling pulling mechanism includes a left cam slot plate, a right cam slot plate, a tension spring, a tension spring mounting frame, a cam slot bearing, a long bearing, a slide rail 1, a slider 1, a seedling pulling frame 1, a seedling pulling frame 2 and a fixed frame. The left cam slot plate and the right cam slot plate are symmetrically fixed on the fixed frame and are connected to both ends of the fixed shaft by bolts. Cam slot bearings are sleeved on both ends of the seedling pulling frame 1 and the seedling pulling frame 2, and the cam slot bearings are respectively embedded in the cam slots of the left cam slot plate and the right cam slot plate. Long bearings are sleeved on both ends of the seedling pulling frame 1 and the seedling pulling frame 2, and the long bearings are embedded in the rectangular slot of the large toothed disk; the slider 1 is connected to the outer walls of the side plates at both ends of the seedling pulling frame, and cooperates with a slide rail 1 fixedly connected to the large toothed disk; the tension spring mounting frame is fixed to the outer side of the large toothed disk by bolts, and the tension spring is connected to the end of the seedling pulling frame to provide tension.

7. A rape seedling clamping and pulling device as claimed in claim 6, characterized in that: The seedling clamping mechanisms are arranged in multiple rows, and the seedling clamping mechanisms in two adjacent rows are arranged in a staggered manner.

8. The rape seedling clamping and pulling device as claimed in claim 7, characterized in that: The seedling clamping mechanism comprises a left seedling clamp, a right seedling clamp, a pin, a connecting plate, a Y-shaped joint, a seedling clamping rod, a compression spring, a seedling clamping push rod, a cam contact bearing, a seedling clamping cam, a second slider, a second slide rail and a gasket. The left seedling clamp and the right seedling clamp are fixed on the first seedling pulling frame and the second seedling pulling frame by pins. One end of the connecting plate is respectively connected to the left seedling clamp and the right seedling clamp by a pin, and the other end is connected to the Y-shaped joint. The Y-shaped joint is connected to one end of the seedling clamping rod, and the other end of the seedling clamping rod is connected to the seedling clamping push rod. The compression spring is located between the seedling clamping push rod and the seedling pulling frame and is sleeved on the seedling clamping pull rod. The seedling clamping cam is symmetrically arranged on the fixed shaft. Cam contact bearings are sleeved on the brackets at both ends of the seedling clamping push rod. The cam contact bearing contacts with the seedling clamping cam. The gasket is welded on both sides of the seedling clamping push rod and is connected to the second slider by bolts. The second slider cooperates with the second slide rails arranged on the first seedling pulling frame and the second seedling pulling frame respectively.

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