Spray type row crop thinner
阅读：680发布：2022-01-21
专利汇可以提供Spray type row crop thinner专利检索，专利查询，专利分析的服务。并且An agricultural machine which is moved along the ground over a row of plants and which has a plant detecting means for sensing the presence of the plants and which controls a herbicide sprayer so as to selectively destroy plants in the row. The distance of plants left and the distance of plants destroyed may be adjusted.，下面是Spray type row crop thinner专利的具体信息内容。
1. Control means for an agricultural plant thinning machine having a frame adapted to move along a row of plants, a plant detector mounted on said frame and adapted to detect plants in said row, and a herbicide dispenser including valve means controlled by said control means to dispense herbicide on selected said plants, said control means comprising: a shaft rotatably mounted on said frame; means for rotatably driving said shaft; an energizable clutch having an element mounted on said shaft to rotate therewith; a driven member rotatably mounted on said frame and being rotatably driven by said clutch when said clutch is energized; a switch actuator connected to said driven member for movement along a path from a starting position in response to rotation of said driven member; reset, plant and limit switches mounted in spaced relation on said frame in the path of said switch actuator and being actuatable in succession by said switch actuator as it moves along said path; means connecting said reset switch with said valve means on said herbicide dispenser, said plant detector and said clutch for energizing said clutch and closing said valve means in response to detection of a plant by said plant detector and actuation of said reset switch by said switch actuator; means connecting said plant switch and said valve means on said herbicide dispenser for opening said valve means in response to actuation of said plant switch by said switch actuator; means connecting said limit switch and said clutch for deenergizing said clutch in response to actuation of said limit switch by said switch actuator; and spring return means connected to said driven member for returning said switch actuator along said path from said limit switch to its starting position.
2. The invention defined in claim 1 wherein said switch actuator is mounted on said driven member for movement therewith along an arcuate path, and said reset, plant and limit switches are located on said arcuate path.
3. The invention defined in claim 2 including means mounting said reset and plant switches on said frame for adjustment of the distance between said reset and plant switches.
4. The invention defined in claim 3 including a reset switch support mounted on said frame for rotation about the axis of rotation of said driven member, means mounting said reset switch on said reset switch support for movement therewith along the arcuate path of said switch actuator, and means connecting said reset switch support and said frame for locking said reset switch support in different positions relative to said frame.
5. The invention defined in claim 4 wherein said reset switch support has a slot formed therein and whErein said means connecting said reset switch support and said frame comprises a first lead screw rotatably supported on said frame, and a threaded projecting member mounted in the slot in said reset switch support and threadably receiving said first lead screw.
6. The invention defined in claim 2 including means mounting said plant and limit switches on said frame for adjustment of the distance between said plant and limit switches.
7. The invention defined in claim 6 including a limit switch support mounted on said frame for rotation about the axis of rotation of said driven member, means mounting said limit switch on said limit switch support for movement therewith along the arcuate path of said switch actuator, and means connecting said limit switch support and said frame for locking said limit switch support in different positions relative to said frame.
8. The invention defined in claim 7 wherein said limit switch support has a slot formed therein and wherein said means connecting said limit switch support and said frame comprises a second lead screw rotatably supported on said frame, and a threaded projecting member mounted in the slot in said limit switch support and threadably receiving said second lead screw.
9. Control means for an agricultural plant thinning machine having a frame adapted to move along a row of plants, a plant detector mounted on said frame and selectively operative to detect plants in said row, and a herbicide dispenser including valve means controlled by said control means to dispense herbicide on selected said plants, said control means comprising: a shaft rotatably mounted on said frame; means for rotatably driving said shaft; an energizable clutch having an element mounted on said shaft to rotate therewith; a driven member rotatably mounted on said frame and being rotatably driven by said clutch when said clutch is energized; a switch actuator connected to said driven member for movement along a path from a starting position in response to rotation of said driven member; reset, plant and limit switches mounted in spaced relation on said frame in the path of said switch actuator and being actuatable in succession by said switch actuator as it moves along said path, said switch actuator actuating said reset switch when in its starting position; means connecting said reset switch with said valve means on said herbicide dispenser, said plant detector and said clutch for energizing said clutch, closing said valve means and deactivating said plant detector in response to detection of a plant by said plant detector and actuation of said reset switch by said switch actuator; means connecting said plant switch and said valve means on said herbicide dispenser for opening said valve means in response to actuation of said plant switch by said switch actuator; means connecting said limit switch and said clutch for deenergizing said clutch in response to actuation of said limit switch by said switch actuator; spring return means connected to said driven member for returning said switch actuator along said path from said limit switch to its starting position; and means connecting said reset switch with said plant detector for reactivating said plant detector in response to return of said switch actuator to its starting position.
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