CN115669330A - Guide rail driving crank type zero-speed transplanting mechanism - Google Patents
Guide rail driving crank type zero-speed transplanting mechanism Download PDFInfo
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- CN115669330A CN115669330A CN202211356791.2A CN202211356791A CN115669330A CN 115669330 A CN115669330 A CN 115669330A CN 202211356791 A CN202211356791 A CN 202211356791A CN 115669330 A CN115669330 A CN 115669330A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 77
- 230000033001 locomotion Effects 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 230000003068 static effect Effects 0.000 claims abstract description 9
- 230000008859 change Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 230000007547 defect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
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Abstract
The invention provides a guide rail driving crank type zero-speed transplanting mechanism which achieves the function of zero-speed seedling throwing. The invention belongs to the field of agricultural machinery. The mechanism comprises a crank pushing guide rail mechanism, a crank shaft position changing mechanism, a planting device and respective transmission chains. The crank pushing guide rail mechanism is driven by the cylindrical cam mechanism, and the motion of the cam mechanism is controlled, so that the crank pushing guide rail mechanism drives the planting device to complete the functions of seedling loading, planting and the like, and zero-speed transplanting is realized. Under the control of the grooved pulley and other mechanisms, the crankshaft position changing mechanism controls the position of the crankshaft to avoid a dead point when the guide rail pushes the crank mechanism to be static at the dead point position. As long as control cylinder cam mechanism, this mechanism can be accurate realization absolute zero-speed throw the seedling, and whole mechanism is not influenced at the zero-speed function of throwing the seedling under the different rate of advance of transplanter.
Description
Technical Field
The invention belongs to the field of agricultural machinery, and mainly relates to a transplanting mechanism which is suitable for different rates and has high seedling standing rate and zero-speed transplanting function.
Background
The zero-speed transplanting means that the speed of the transplanting machine in the transplanting process relative to the horizontal direction of the ground is zero when seedlings are planted in the soil through the combined motion of the transplanting machine and the transplanting mechanism, and the seedling throwing action in the vertical direction is completed. The transplanting mechanism is a key component for ensuring the transplanter to realize the zero-speed transplanting function. Whether the zero-speed transplanting is met or not influences the seedling standing rate and the seedling hurting rate of the transplanting and further influences the survival rate of the transplanted seedlings. The existing transplanting mechanism has poor adaptability to the change of the speed of the transplanting machine, the speed of the transplanting machine needs to be manually controlled during working, the seedling standing rate of the transplanting work is low, and the transplanting efficiency is low.
Disclosure of Invention
The invention aims to provide a guide rail driving crank type zero-speed transplanting mechanism which is used for solving the problems that the existing transplanting mechanism is not strong in adaptability to the speed change of a transplanting machine, the speed of the transplanting machine needs to be manually controlled during working, the seedling standing rate of transplanting work is low, and the transplanting efficiency is low. In order to overcome the defects, the invention adopts the combination of the cam mechanism, the crank, the slide block and the vertical guide rail to realize the zero-speed seedling throwing function, and the zero-speed seedling throwing mechanism can adapt to the movement speed change of the transplanter, improve the seedling standing rate of transplanting work, reduce the seedling damage, and on the basis of the function, the crank shaft displacement mechanism is added to effectively avoid dead points in the movement process of the mechanism, so that the technical scheme is more reasonable.
The design idea of the invention is as follows: a driving wheel is designed to drive a cam mechanism, the cam mechanism controls a vertical guide rail to reciprocate at a constant speed, the vertical guide rail drives a sliding block, and the sliding block reciprocates at a constant speed in the horizontal direction and reciprocates in the vertical direction. Based on the design, the cam mechanism is designed to ensure that the movement speed of the sliding block is equal to the movement speed of the transplanter in a certain section of travel, and the transplanter is arranged on the sliding block, so that the zero-speed seedling throwing function of the transplanter is realized. Because the mechanism has the defect that dead points cause the mechanism not to normally operate, a crankshaft position changing mechanism is added and a transmission chain is designed. The driving wheel drives the gear disc group to rotate intermittently through a bevel gear, a grooved pulley and other transmission devices, and when the guide rail drives the crank mechanism to operate to a static stop near a dead point, the guide rail shifts the crank shaft to change the position to jump over the dead point.
In order to achieve the purpose, the invention adopts the following technical scheme:
a guide rail driving crank type zero-speed transplanting mechanism is composed of a guide rail pushing crank mechanism, a crank shaft shifting mechanism and a transmission chain, as shown in figures 1 and 2.
The first part is a guide rail pushing crank mechanism, which comprises a crank (19), a sliding block (20), a vertical guide rail (18) and the like, wherein the crank (19) is arranged on a cylindrical sliding block (23) (the structure is shown in figure 5) through a bearing, the cylindrical sliding block (23) is arranged on an annular curved guide rail (22), the assembly mode is shown in a partially enlarged view of figure 3, a middle groove of the cylindrical sliding block (23) is nested in the annular guide rail (22), the crank (19) is sleeved at the long shaft end of the cylindrical sliding block (23) through a pair of bearings, and when the crank mechanism runs, the position of the crank shaft is changed by changing the position of the cylindrical sliding block (23), so that the guide rail pushing crank mechanism avoids a dead point in the motion process. The guide rail pushes a sliding block (20) of a crank mechanism to be arranged on a vertical guide rail (18) and can reciprocate up and down in the vertical guide rail (18), a vertical hollow rod is fixedly arranged on the sliding block (20), and a planting device (21) arranged on the hollow rod moves along with the sliding block (20). The vertical guide rail (18) of the guide rail pushing crank mechanism is arranged at the front end of the cylindrical cam (9), and the cylindrical cam (9) is driven by the gear mechanism and pushes the vertical guide rail (18) to reciprocate back and forth.
The second part is a crankshaft position changing mechanism which comprises an annular guide rail (22), a cylindrical sliding block (23) and a gear dial group (16), wherein the annular guide rail (22) is composed of an outer ring and an inner core as shown in figure 6, the outer ring is fixed on the rack by bolts and fixed-length circular tubes, the inner core penetrates through the gear dial group and is installed on the rack, the gear dial group is shown in figure 4, and the part is of a hollow structure and is sleeved on an inner core shaft of the annular guide rail (22) and can rotate around a shaft. The inner core and the outer ring need a certain positioning precision, so that the cylindrical sliding block (23) can slide in the annular guide rail without obstruction. The intermittent movement of the grooved driving plate of the gear driving plate group (16) is carried out, the fluctuation groove of the grooved driving plate is sleeved on the cylindrical sliding block (23), the intermittent movement of the cylindrical sliding block (23) is carried out in the annular guide rail (22) or kept at the upper top end and the lower top end, and the guide rail is matched to push the crank mechanism to move to avoid dead points.
The third part is a transmission chain, the invention is provided with two transmission chains, one transmission chain consists of a No. 1 gear (1), a cylindrical cam (9) and a push rod (10), and an actuating mechanism (a guide rail pushing crank mechanism) is driven to complete actions of throwing seedlings, loading seedlings and the like. The other one consists of a gear 1, a gear 2, a bevel gear 1, a bevel gear 2, a sprocket 1, a sprocket 2, a sprocket 5, a sprocket 12, a sheave 15 and a gear 3, wherein when a roller in the cylindrical cam 9 is at a static rest end, a grooved driving plate of a driving gear plate group 16 drives a crank shaft to change the position of the crank shaft, and when the cylindrical cam 9 pushes a push rod 10 to act, the crank shaft is locked in degree of freedom to keep static.
The invention utilizes the guide rail to push the combination of the crank mechanism and the cam mechanism, so that the speed of the slide block in the horizontal direction is controlled, the slide block can be ensured to complete the up-and-down reciprocating motion, and the planting device can complete the work of planting, seedling loading and the like along with the motion of the slide block.
The invention has the following advantages:
a) This device can guarantee absolutely zero-speed and throw the seedling, compares with the device in the past, throws the more invariable approximate zero-speed of horizontal speed of seedling in-process planting device, more can reduce to drag the seedling, hinder the seedling.
b) Compared with other transplanting mechanisms, the device has the advantages that when the transplanter runs at different speeds, the zero-speed seedling throwing function is not affected, and the device can adapt to various transplanting speeds without an adjusting device.
Drawings
FIG. 1 is a view showing a structure of a transplanting mechanism of the present invention.
FIG. 2 is a rear view of the transplanting mechanism of the present invention
FIG. 3 is a top view and a partial enlarged view of the transplanting mechanism of the present invention
FIG. 4 is a schematic view of the structure of the gear dial set of the present invention
FIG. 5 is a schematic view of a cylindrical slider according to the present invention
FIG. 6 is a schematic view of the shape of the curved guide rail of the present invention
The labels in the figure are specifically as follows:
in the figure, 1 is a No. 1 gear, 2 is a No. 2 gear, 3 is a No. 1 bevel gear, 4 is a No. 2 bevel gear, 5 is a No. 1 chain wheel, 6 is a frame 1,7 is a frame 2,8 is a chain, 9 is a cylindrical cam, 10 is a push rod, 11 is a cam slider, 12 is a No. 2 chain wheel, 13 is a drive plate, 14 is a No. 3 gear, 15 is a grooved pulley, 16 is a gear dial plate group, 17 is a frame 3, 18 is a vertical guide rail, 19 is a crank, 20 is a slider, 21 is a planting device, 22 is an annular guide rail, and 23 is a cylindrical slider.
Detailed Description
Embodiments of the present invention are described in detail below with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The No. 1 gear (1) is driven by a transplanter to become a power source of the mechanism. The working process of the mechanism is as follows: no. 1 gear (1) obtains power source as the action wheel of this mechanism with certain drive ratio from the transplanter, and the action wheel drives cylindrical cam (9) and rotates, and cylindrical cam (9) make push rod (10) make reciprocating motion and possess four stages through designing certain orbit:
the first stage is as follows: the push rod (10) is static, the driving wheel drives the gear dial group (16) to rotate through the transmission chain, and the gear dial group (16) drives the cylindrical slide block (23) to the upper end of the curved guide rail (22), so that the crank slide block mechanism avoids dead points.
And a second stage: the sheave (15) is kept still, the push rod (10) moves back, the push guide rail (18) operates to enable the sliding block (20) to move downwards until the sliding block reaches the bottom and then starts to move upwards until the push rod (10) is still. The planting device (21) follows the slide block (20) to complete the work of drilling and unearthing. The track of the cylindrical cam (9) is designed to ensure that the speed of the push rod (10) is equal to the advancing speed of the transplanter, so that the zero-speed seedling throwing function is achieved. Because the gear (1) and the cam mechanism from the engine to the No. 1 adopt fixed ratio transmission, the speed of the push rod (10) can be kept equal to that of the transplanter and the direction is opposite to that of the transplanter no matter how much the speed of the transplanter, and the horizontal absolute speed of the planting device (21) relative to the ground is 0 when the planting device shoots, so the mechanism can adapt to planting at different speeds.
And a third stage: in the same first stage, the push rod is static, and the gear dial group (16) drives the cylindrical slide block (23) to the lower end of the curved guide rail (22) to avoid a dead point.
A fourth stage: the sheave (15) remains stationary and the push rod (10) pushes the guide rail, causing the slide (20) to move up to the top and then move down. The planting device (21) loads seedlings in the period.
Claims (2)
1. A guide rail driving crank type zero-speed transplanting mechanism, the crank mechanism is pushed by the guide rail, the crank shaft deflection mechanism and the transmission chain are composed of three parts: the first part is a guide rail pushing crank mechanism which comprises a crank (19), a sliding block (20), a vertical guide rail (18) and the like; the crank (19) is arranged on a cylindrical sliding block (23) through a bearing, the cylindrical sliding block (23) is arranged on an annular curved guide rail (22), and the position of the crank shaft is changed by changing the position of the cylindrical sliding block (23), so that the vertical guide rail (18) pushes the crank mechanism to avoid a dead point in the movement process; the guide rail pushes a sliding block (20) of a crank mechanism to be arranged on a vertical guide rail (18) and can reciprocate up and down in the vertical guide rail (18), a vertical hollow rod is fixedly arranged on the sliding block (20), and a planting device (21) arranged on the hollow rod moves along with the sliding block (20); a vertical guide rail (18) of the guide rail pushing crank mechanism is arranged at the front end of the cylindrical cam (9), and the cylindrical cam (9) is driven by the gear mechanism and pushes the vertical guide rail (18) to reciprocate back and forth; the second part is a crankshaft position changing mechanism and comprises an annular guide rail (22), a cylindrical sliding block (23) and a gear dial group (16), wherein the annular guide rail (22) consists of an outer ring and an inner core, the outer ring is fixed on the rack by bolts and a fixed-length circular tube, the inner core penetrates through the gear dial group and is installed on the rack, the gear dial group is of a hollow structure and can rotate around the inner core, and the inner core and the outer ring need certain positioning precision so that the cylindrical sliding block (23) can slide in the annular guide rail without hindrance; a grooved driving plate of the gear driving plate group (16) performs intermittent motion, a fluctuation groove of the grooved driving plate is sleeved on a cylindrical sliding block (23), and the intermittent driving cylindrical sliding block (23) performs motion in an annular guide rail (22) or is kept at the top ends of the upper end and the lower end; the third part is a transmission chain, the invention is provided with two transmission chains, one transmission chain consists of a No. 1 gear (1), a cylindrical cam (9) and a push rod (10), and an actuating mechanism (a guide rail pushing crank mechanism) is driven to complete actions such as seedling throwing and loading; the other one consists of a gear 1, a gear 2, a bevel gear 1, a bevel gear 2, a sprocket 1, a sprocket 2, a sprocket 5, a sprocket 12, a sheave 15 and a gear 3, wherein when a roller in the cylindrical cam 9 is at a static rest end, a grooved driving plate of a driving gear plate group 16 drives a crank shaft to change the position of the crank shaft, and when the cylindrical cam 9 pushes a push rod 10 to act, the crank shaft is locked in degree of freedom to keep static.
2. The guide rail driving crank type zero-speed transplanting mechanism as claimed in claim 1, wherein: a vertical guide rail (18) is arranged at the tail end of a push rod (10) of the cylindrical cam mechanism (9), a slide block is arranged on the vertical guide rail (18), the slide block is connected with a crank (19), and a planting device (21) is arranged to form a guide rail pushing crank mechanism; the crank shaft is arranged on a crank shaft position changing mechanism, the crank shaft position changing mechanism consists of an annular guide rail (22) and a cylindrical sliding block (23), is arranged on the rack 3 (17), and is controlled to move by a grooved pulley (15); the specific motion of the mechanism is as follows: in the initial state, the crank (19) is positioned at the end close to the cylindrical cam, the cylindrical cam (9) drives the vertical guide rail (18) to move forward, the slide block (20) is stressed to move upwards, the planting device (21) moves upwards to collect seedlings, and when the crank (19) moves to the end far away from the cylindrical cam (9), the first step is completed; then, the cylindrical cam (9) drives the vertical guide rail (18) to move backwards, the sliding block (20) is stressed to move downwards, the planting device (21) finishes planting work, the zero-speed seedling throwing function is guaranteed under the control of the cylindrical cam (9), and a complete transplanting step is finished when the crank (19) moves back to be close to the end of the cylindrical cam (9); when the crank (19) moves to the two farthest ends and is in a static state, the crank shaft position changing mechanism changes the position of the crank shaft, so that the guide rail pushes the crank mechanism to avoid a dead point and indirectly control the moving direction of the sliding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211356791.2A CN115669330B (en) | 2022-11-01 | 2022-11-01 | Guide rail driving crank type zero-speed transplanting mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211356791.2A CN115669330B (en) | 2022-11-01 | 2022-11-01 | Guide rail driving crank type zero-speed transplanting mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN115669330A true CN115669330A (en) | 2023-02-03 |
| CN115669330B CN115669330B (en) | 2024-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211356791.2A Active CN115669330B (en) | 2022-11-01 | 2022-11-01 | Guide rail driving crank type zero-speed transplanting mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117208526A (en) * | 2023-10-10 | 2023-12-12 | 河南鸿昌电子有限公司 | Accurate output silk screen printing device of semiconductor thermoelectric refrigeration chip integrated machine |
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|---|---|---|---|---|
| CN103609238A (en) * | 2013-12-24 | 2014-03-05 | 湖南农业大学 | Transplanting mechanism capable of implementing continuous perpendicular planting |
| CN106211885A (en) * | 2016-08-29 | 2016-12-14 | 罗忠良 | A kind of Full-automatic rice rice seedlings transplanter |
| CN108064512A (en) * | 2017-11-30 | 2018-05-25 | 江苏大学 | A kind of transplanter crank block type is divided into seedlings apparatus and method |
| US20190014716A1 (en) * | 2016-01-07 | 2019-01-17 | Jiangsu University | High-speed transplanting mechanism having laterally openable/closable duckbill |
| CN111972083A (en) * | 2020-09-27 | 2020-11-24 | 南京农业大学 | Compound crank rocker type transplanting mechanism |
| CN113994801A (en) * | 2021-11-12 | 2022-02-01 | 济南大学 | Multi-foot type planting mechanism |
| CN115067036A (en) * | 2022-08-01 | 2022-09-20 | 山东农业大学 | Device and method for detecting seedling leakage and supplementing seedling of plug tray type transplanter based on machine vision |
-
2022
- 2022-11-01 CN CN202211356791.2A patent/CN115669330B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103609238A (en) * | 2013-12-24 | 2014-03-05 | 湖南农业大学 | Transplanting mechanism capable of implementing continuous perpendicular planting |
| US20190014716A1 (en) * | 2016-01-07 | 2019-01-17 | Jiangsu University | High-speed transplanting mechanism having laterally openable/closable duckbill |
| CN106211885A (en) * | 2016-08-29 | 2016-12-14 | 罗忠良 | A kind of Full-automatic rice rice seedlings transplanter |
| CN108064512A (en) * | 2017-11-30 | 2018-05-25 | 江苏大学 | A kind of transplanter crank block type is divided into seedlings apparatus and method |
| CN111972083A (en) * | 2020-09-27 | 2020-11-24 | 南京农业大学 | Compound crank rocker type transplanting mechanism |
| CN113994801A (en) * | 2021-11-12 | 2022-02-01 | 济南大学 | Multi-foot type planting mechanism |
| CN115067036A (en) * | 2022-08-01 | 2022-09-20 | 山东农业大学 | Device and method for detecting seedling leakage and supplementing seedling of plug tray type transplanter based on machine vision |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117208526A (en) * | 2023-10-10 | 2023-12-12 | 河南鸿昌电子有限公司 | Accurate output silk screen printing device of semiconductor thermoelectric refrigeration chip integrated machine |
| CN117208526B (en) * | 2023-10-10 | 2024-05-07 | 河南鸿昌电子有限公司 | Accurate output silk screen printing device of semiconductor thermoelectric refrigeration chip integrated machine |
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| CN115669330B (en) | 2024-05-07 |
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