Detection sensor for automatic row alignment of corn combine harvester

Abstract

The invention relates to the technical field of detection sensors, in particular to an automatic row alignment detection sensor of a corn combine harvester, which comprises a rack, a connecting box, a shifting mechanism and a pushing mechanism, the shifting mechanism is used for shifting obstacles aside, a rotating through hole is formed in the bottom surface of the rack, and the top end of the connecting box is fixedly connected with the bottom surface of the rack. According to the corn stalk detection device, the rack is installed on the harvester, then the position sensing element on the shifting mechanism is used for detecting the positions of corn stalks, and if obstacles make contact with the position sensing element at the same time to cause multiple detection signals, the shifting mechanism is started to drive the multiple box bodies to rotate in a separated mode; when the corn stalks are planted densely, the plurality of box bodies push up obstacles which may block measurement, and the pushing mechanism is started to drive the lowermost connecting plate to move to a proper position to detect the positions of the corn stalks again, so that the detection precision is improved; the total length of the plurality of box bodies can be shortened by utilizing the toggle mechanism, so that the toggle mechanism can be conveniently reset after being detected, and the use is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of detection sensors, in particular to an automatic row alignment detection sensor for a corn combine harvester. Background Art

[0002] High-density and narrow-pitch corn fields are a planting technology that increases the number of corn plants per unit area to improve the utilization rate of group light energy and yield. When using a corn combine harvester to harvest high-density and narrow-pitch corn stalks, the existing row control technology is often difficult to accurately identify and adapt to this closely arranged crop layout, resulting in problems such as missed cutting and plant damage during the harvesting process. Traditional row control detection methods are mainly divided into non-contact detection and contact detection. Non-contact detection is detected by a camera or radar, but the application of this method is limited by the working environment, has poor adaptability, and is costly; contact detection is detected by a device equipped with a mechanical sensor, but some corn fields may have various types of corn stalks that have been dumped artificially or naturally. During harvesting, such dumped corn stalks may accidentally touch the sensor, resulting in affecting the accuracy of the contact detection method, which is inconvenient. In addition, for corn fields planted with narrow spacing, due to the dense distribution of corn, general contact detection sensors are inconvenient to directly detect the distribution position of corn stalks, which is inconvenient. Summary of the invention

[0003] The object of the present invention is to provide a detection sensor for automatic row alignment of a corn combine harvester to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A detection sensor for automatic row alignment of a corn combine harvester, comprising:

[0006] A frame, a connection box, a toggle mechanism and a pushing mechanism for removing obstacles, a rotating through hole is opened on the bottom surface of the frame, the top of the connection box is fixedly connected to the bottom surface of the frame, an angle detector is arranged inside the connection box, and the angle detector is fixedly connected to a detection shaft, the detection shaft is rotatably sleeved inside the rotating through hole, and the top of the detection shaft is fixedly sleeved with a base, the toggle mechanism is located at one end of the base, the toggle mechanism includes a plurality of box bodies arranged vertically in sequence, and a connecting plate is arranged on one side of the plurality of box bodies, a plurality of position sensing elements are fixedly connected to one side of the plurality of connecting plates, and a plurality of box bodies are arranged inside A contact sensing PCB board is arranged, and multiple contact sensing PCB boards are electrically connected to multiple position sensing elements on adjacent connecting boards. Except for the connecting board located at the bottom, one side of other connecting boards is fixedly connected to one side of adjacent box bodies, and both ends of the other sides of multiple box bodies are fixedly connected to sleeve rods. Except for the square box body located at the bottom, the two sleeve rods on other box bodies are rotatably connected to support arms, and a circular hole is opened at one end of any support arm. The inner side walls of the circular holes at one end of the two support arms on any box body are rotatably sleeved with the outer side walls of the two sleeve rods on the lower box body respectively, and the pushing mechanism is located on one side of the bottom box body.

[0007] Furthermore, a return spring is fixedly connected to the outer side wall of the base, and one end of the return spring is fixedly connected to an inner side wall of the frame through a connecting piece.

[0008] Furthermore, one end of the base is fixedly connected to a fixing rod, and one end of the fixing rod is rotatably connected to a guide rail, and the other sides of the two box bodies located at the top and the bottom are fixedly connected to sliders, and the two sliders are slidably engaged in the guide rail.

[0009] Furthermore, the guide rail is equipped with a rotating plate, and a rotating hole is opened at one end of the rotating plate, the inner wall of the rotating hole is rotatably sleeved with the outer wall of the connecting box, a card block is slidably clamped inside the guide rail, and one end of the card block is rotatably connected to a connecting shaft, and a pneumatic push rod is fixedly connected to the top surface of the other end of the rotating plate, and the movable end of the pneumatic push rod is fixedly connected to one end of the connecting shaft.

[0010] Furthermore, except for the box body located at the bottom, one end of the bottom surface of other box bodies is fixedly connected to a contact module, and except for the box body located at the top, the other end of the top surface of other box bodies is fixedly connected to a power supply module, and the contact modules on two adjacent box bodies are movably connected to the power supply modules.

[0011] Furthermore, except for the box body located at the top, the other ends of the top surfaces of the other box bodies are fixedly connected to two U-shaped plates, the two U-shaped plates on any box body are respectively located on the opposite sides of adjacent power supply modules, both ends of the top surface of any U-shaped plate are rotatably connected to toothed rollers, a toothed belt is rotatably sleeved between the outer sides of the two toothed rollers on any U-shaped plate, two driving motors are arranged under any U-shaped plate, any driving motor is located inside the adjacent box body, and the motor end of any driving motor is fixedly connected to one end of a toothed roller on the adjacent U-shaped plate.

[0012] Further, the pushing mechanism comprises:

[0013] The U-shaped frame, the scissor-type bracket and the slide rail, the U-shaped frame is fixedly connected to one end of the base, and an adjusting screw is rotatably connected between the two arms of the U-shaped frame, the adjusting screw is a positive and negative thread screw, the scissor-type bracket includes a plurality of support rods, one end of the two support rods located at one end of the scissor-type bracket are rotatably connected to a support plate, and one end of the two support plates are fixedly connected to a screw-on cylinder, the inner side walls of the two screw-on cylinders are screwed together with the outer side walls of the adjusting screw rod, one side of the slide rail is fixedly connected to the other end of the connecting plate located at the bottom, the slide rail includes two parallel slideways, and the two slideways are slidably clamped with movable clamping plates, and one end of the two support rods located at the other end of the scissor-type bracket are rotatably connected to one end of the two movable clamping plates.

[0014] Furthermore, one end of the U-shaped frame is fixedly connected to a motor box, and a power motor is arranged inside the motor box, and the motor end of the power motor is fixedly connected to one end of the adjusting screw rod.

[0015] Furthermore, a slot is provided on the other side of the lowest connecting plate, and a convex ring is fixedly sleeved on one end of the outer side walls of the plurality of rotating shafts in the middle of the scissor-type bracket, and any convex ring is movably engaged in the slot.

[0016] Furthermore, one side of the support rods of the scissor-type bracket is a chamfered structure.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Install the frame on the harvester, and then use the position sensing elements connected to the multiple connecting plates on the toggle mechanism to detect the position of the corn stalks. If there are obstacles contacting the position sensing elements at the same time, resulting in multiple detection signals, start the toggle mechanism to drive the multiple box bodies to separate and rotate, so that the multiple box bodies push up the obstacles that may block the measurement, and start the pushing mechanism to drive the lowest connecting plate to move to a suitable position to detect the position of the corn stalks again, thereby improving the detection accuracy. When the corn stalks are densely planted, the toggle mechanism can be used to shorten the total length of the multiple box bodies to facilitate the toggle mechanism to reset after detection, so as to carry out the next detection, which is convenient for use.

[0019] 2. When the harvester moves, it can drive multiple boxes to move synchronously, so that the position sensing elements on the multiple boxes touch the corn stalks, and after sensing that the corn stalks are away from the adjacent detection axis, the corn stalks push the multiple boxes and the detection axis to rotate around the adjacent detection axis as the harvester moves, until the corn stalks are separated from the multiple boxes, and the rotation angles of the multiple boxes and the detection axis are measured by the angle detector, and the specific positions of the corn stalks and the detection axis are calculated by the calculation formula, so as to provide effective detection data for subsequent row control, so as to reduce row errors, and after the corn stalks are separated from the multiple boxes, the base can drive the detection axis and the multiple boxes to reset through the reset spring for the next detection;

[0020] 3. When leaves, corn stalks that have been knocked down or naturally tilted and other debris come into contact with the position sensing element, resulting in excessive position information, the pneumatic push rod is started to push the rotating part of the guide rail through the block, so that the guide rail pulls the other boxes except the bottom box through the two sliders to move, so that the other boxes move through the adjacent sleeve rods and support arms to push the obstacles up, and except for the bottom box, the position sensing elements on the other boxes are powered by the contact module and the adjacent power supply module. After the other boxes rotate through the adjacent sleeve rods and support arms, the multiple boxes are naturally separated, so that the position sensing elements on the other boxes no longer operate, reducing Less invalid information is provided, and at this time the power motor can be started to drive the adjusting screw to rotate, so that the adjusting screw drives the two screw-on cylinders to move toward each other, so that the scissor-type bracket is extended to move the lowest connecting plate to a suitable position, and the lowest connecting plate is moved to the bottom of other box bodies to detect the position of the corn stalks again, thereby improving the detection accuracy. After the detection is completed, multiple box bodies are driven to reset by the pneumatic push rod through the guide rail. When the contact module on the box body contacts the adjacent power supply module, the drive motor in the box body drives the adjacent toothed belt to rotate through the toothed roller, and the leaves that may be clamped between the contact module and the adjacent power supply module are rubbed out to avoid affecting the contact between the contact module and the adjacent power supply module.

[0021] 4. When corn stalks are planted densely, after detecting a corn stalk, when multiple box bodies, connecting plates and detection shafts are reset by the reset spring on the base, they may be blocked by other corn stalks and cannot be completely reset. The pneumatic push rod can be started to push the guide rail to rotate vertically through the block, so that the guide rail pulls multiple box bodies through two sliders to rotate by relying on adjacent sleeve rods and support arms, so that the multiple box bodies are in a vertical parallel state, thereby shortening the total length of the multiple box bodies and facilitating the complete reset of the multiple box bodies for the next detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2It is a schematic diagram of the positional relationship between the toggle mechanism and the pushing mechanism in the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the rack and the connection box in the present invention;

[0025] Figure 4 It is an exploded diagram of the toggle mechanism structure in the present invention;

[0026] Figure 5 It is a schematic diagram of the guide frame and the card block structure in the present invention;

[0027] Figure 6 It is a schematic diagram of the box structure in the present invention;

[0028] Figure 7 The present invention Figure 6 A partial enlarged view of the middle part;

[0029] Figure 8 It is an exploded diagram of the pushing mechanism structure in the present invention;

[0030] Fig. 9 It is a top view of the present invention in use.

[0031] In the figure: 100, frame; 200, connecting box; 210, detection shaft; 220, base; 221, reset spring; 300, toggle mechanism; 310, box body; 311, slider; 312, contact module; 313, power supply module; 314, U-shaped plate; 315, toothed belt; 320, connecting plate; 321, position sensing element; 322, slot; 330, sleeve rod; 331, support arm; 340, fixing rod; 341, guide rail; 342, block; 350, rotating plate; 351, pneumatic push rod; 400, pushing mechanism; 410, U-shaped frame; 411, adjusting screw rod; 420, scissor bracket; 421, screw cylinder; 422, convex ring; 430, motor box; 440, slide rail; 441, movable card plate. DETAILED DESCRIPTION

[0032] 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.

[0033] See also Figure 1-Figure 9 In an embodiment of the present invention, a sensor for automatically aligning rows of a corn combine harvester comprises:

[0034] The frame 100, the connection box 200, the toggle mechanism 300 and the pushing mechanism 400 for removing the obstacles, the frame 100 has a rotating through hole on the bottom surface, the top of the connection box 200 is fixedly connected to the bottom surface of the frame 100, an angle detector is arranged inside the connection box 200, and the angle detector is fixedly connected to a detection shaft 210, the detection shaft 210 is rotatably sleeved inside the rotating through hole, and the top of the detection shaft 210 is fixedly sleeved with a base 220, the toggle mechanism 300 is located at one end of the base 220, the toggle mechanism 300 includes a plurality of box bodies 310 arranged vertically in sequence, and a connecting plate 320 is arranged on one side of the plurality of box bodies 310, a plurality of position sensing elements 321 are fixedly connected to one side of the plurality of connecting plates 320, and a plurality of box bodies 310 are arranged inside A contact sensing PCB board is arranged, and multiple contact sensing PCB boards are electrically connected to multiple position sensing elements 321 on adjacent connecting boards 320. Except for the connecting board 320 located at the bottom, one side of other connecting boards 320 is fixedly connected to one side of adjacent box bodies 310, and both ends of the other sides of multiple box bodies 310 are fixedly connected to sleeve rods 330. Except for the square box body 310 located at the bottom, the two sleeve rods 330 on other box bodies 310 are rotatably connected to support arms 331, and a circular hole is opened at one end of any support arm 331. The inner side walls of the circular holes at one end of the two support arms 331 on any box body 310 are rotatably sleeved with the outer side walls of the two sleeve rods 330 on the lower box body 310, and the pushing mechanism 400 is located on one side of the lowest box body 310.

[0035] Specifically, the angle detector is connected to the detection shaft 210, so that when the detection shaft 210 rotates, the angle detector can detect the rotation angle of the detection shaft 210. This is a prior art and will not be described in detail here. The position sensing elements 321 are arranged in a linear array on adjacent connecting plates 320. By touching any position sensing element 321, the position sensing element 321 can send a signal to the adjacent contact sensing PCB board, thereby obtaining the distance between the touched position sensing element 321 and the central axis of the detection shaft 210. This is a prior art and will not be described in detail here. During installation, the frame 100 is fixed to the harvester through a connecting piece. In the initial state, multiple box bodies 310 are arranged in an inclined manner in sequence, and between two adjacent box bodies 310, the top surface of the box body 310 located below overlaps the bottom surface of the box body 310 located above, so that when the multiple box bodies 310 are in the initial position, the position sensing elements 321 on all the box bodies 310 are located on the same plane. On the surface, all the position sensing elements 321 are linearly arranged and staggered, so that the distances from the position sensing elements 321 on the bottom box body 310 to the top box body 310 to the detection axis 210 increase successively. When any position sensing element 321 contacts the corn stalk, data can be transmitted to the adjacent contact sensing element PCB board, so as to detect the distance of the corn stalk touching the position sensing element 321 from the detection axis 210. When the harvester is driving, the detection axis 210 is taken as the coordinate origin, the plane where the multiple box bodies 310 are located is the x-axis, the driving direction is the y-axis, θ is the angle at which the multiple box bodies 310 are pushed by the stalks after contacting the corn stalks and thus deflected, h is the distance of the corn stalk touching the position sensing element 321 from one end of the base 220 on the y-axis, L is the distance between the position sensing element 321 touched by the corn stalk and the detection axis 210, and the position of the corn stalk and the position of the origin are shown in formula (1.1).

[0036]

[0037] The relative speed of the harvester can be calculated from the front and rear positions of the corn stalks, as shown in formula (1.2).

[0038]

[0039] Where P represents the position of the front and rear corn stalks, the speed value v is obtained by dividing the distance from the position of the nearest point to the previous point by the time between two detections, △t is the time change, so that the rotation angle of the base 220 and the distance from the position sensing element 321 touched by the corn stalk to the detection axis 210 can be detected by the angle detector, and the specific position of the corn stalk in the plane coordinate system can be calculated by the angle and distance, which can provide effective detection data for subsequent row control to reduce row errors. Then, during the harvesting process of the harvester, when the position sensing element 321 contacts the corn stalk being harvested, if there are objects such as stalk leaves, or stalks that have been harvested by the harvester but knocked down in the middle of the process blocking it, an error will occur. Now, multiple position sensing elements 321 touch an object at the same time and send out a signal. At this time, the multiple box bodies 310 can be separated by pushing the other box bodies 310 except the bottom box body 310 to rotate through the adjacent sleeve rods 330 and the support arms 331, and the blocking objects can be pushed up when the multiple box bodies 310 rotate. At the same time, the pushing mechanism 400 can be used to move the bottom connecting plate 320 to the position of the corn stalk detected last time, so as to perform a touch detection on the corn stalk that needs to be touched this time, and the blocking object is pushed up by other box bodies 310 away from the bottom connecting plate 320, so that the obstacles between the corn stalk at the desired touch detection position and the position sensing element 321 on the bottom connecting plate 320 are reduced, thereby improving the detection accuracy.

[0040] Embodiment 1

[0041] like Figure 2-Figure 5 As shown, in the present embodiment, a return spring 221 is fixedly connected to the outer wall of the base 220, and one end of the return spring 221 is fixedly connected to an inner wall of the frame 100 through a connecting piece, a fixing rod 340 is fixedly connected to one end of the base 220, and one end of the fixing rod 340 is rotatably connected to a guide rail 341, the other sides of the two box bodies 310 located at the top and the bottom are fixedly connected to sliders 311, and the two sliders 311 are slidably engaged with the inside of the guide rail 341, the guide rail 341 is equipped with a rotating plate 350, and a rotating hole is opened at one end of the rotating plate 350, the inner side wall of the rotating hole is rotatably sleeved with the outer wall of the connecting box 200, a clamping block 342 is slidably engaged with the inside of the guide rail 341, and one end of the clamping block 342 is rotatably connected to a connecting shaft, a pneumatic push rod 351 is fixedly connected to the top surface of the other end of the rotating plate 350, and the movable end of the pneumatic push rod 351 is fixedly connected to one end of the connecting shaft.

[0042] In this embodiment, when multiple box bodies 310 are in the initial position, after the position sensing element 321 on any connecting plate 320 collides with the corn stalk, as the harvester moves forward, all box bodies 310, connecting plates 320, position sensing elements 321, base 220 and detection shaft 210 are driven by the corn stalk to rotate around the central axis of the detection shaft 210. After the corn stalk is separated from the position sensing element 321, the base 220 can be driven by the adjacent reset spring 221 to reset the detection shaft 210, so that the detection shaft 210, all box bodies 310, connecting plates 320 and position sensing elements 321 are reset. When the plurality of box bodies 310 are densely packed, the total length of the plurality of box bodies 310 in the initial state is relatively long, and they may conflict with other corn stalks during the resetting process and be difficult to rotate to a fully reset state. At this time, the pneumatic push rod 351 can be started to drive the block 342 to slide on the guide rail 341, thereby conflicting with the guide rail 341 to rotate around the center of one end of the fixed rod 340, so that the guide rail 341 is rotated to a vertical state, and the guide rail 341 pulls the plurality of box bodies 310 to rotate synchronously through the slider 311, so that the other box bodies 310 except the bottom box body 310 are rotated through the adjacent sleeve rods 330 and the support arms 331, so that all the box bodies 310 are vertically rotated. The pneumatic push rod 351 is arranged in parallel, thereby shortening the total length of the multiple box bodies 310, making it easier for the reset spring 221 to drive the base 220 and all the box bodies 310 to rotate and completely reset, and then starting the pneumatic push rod 351 to drive the block 342 to reset, so that the block 342 drives the guide rail 341 to reset, so that the guide rail 341 pulls the top box body 310 to reset through the slider 311, so that the multiple box bodies 310 return to their initial positions, so as to perform the next detection. The pneumatic push rod 351 can be configured with a controller to control the opening and closing. When the controller generates a touch signal of multiple position sensing elements 321, it can control the active end part of the pneumatic push rod 351 to lift up, so that Except for the bottom box body 310, the other box bodies 310 all rotate parts to push up the obstruction. After the corn stalks are separated from the position sensing element 321, the controller can control the pneumatic push rod 351 to push the guide rail 341 vertically through the block 342 and then reset it, so as to facilitate the total length of multiple box bodies 310 to be shortened and then reset to the initial state. The controller is a prior art and will not be repeated here. When the multiple box bodies 310 rotate around the central axis of the detection shaft 210, the central axis of the detection shaft 210 and the central axis of the connecting box 200 are located on the same central axis, so that the pneumatic push rod 351 and the rotating plate 350 will rotate synchronously around the central axis of the detection shaft 210.

[0043] like Figure 6-Figure 7As shown, in the present embodiment, except for the box body 310 located at the bottom, one end of the bottom surface of other box bodies 310 is fixedly connected with a contact module 312, except for the box body 310 located at the top, the other end of the top surface of other box bodies 310 is fixedly connected with a power supply module 313, the contact modules 312 on two adjacent box bodies 310 are movably connected with the power supply module 313, except for the box body 310 located at the top, the other end of the top surface of other box bodies 310 is fixedly connected with two U-shaped plates 314, the two U-shaped plates 314 on any box body 310 are respectively located at the opposite sides of the adjacent power supply modules 313, both ends of the top surface of any U-shaped plate 314 are rotatably connected with toothed rollers, a toothed belt 315 is rotatably sleeved between the outer side walls of the two toothed rollers on any U-shaped plate 314, two driving motors are arranged under any U-shaped plate 314, any driving motor is located inside the adjacent box body 310, and the motor end of any driving motor is fixedly connected to one end of a toothed roller on the adjacent U-shaped plate 314.

[0044] In a specific implementation, when the multiple box bodies 310 are in an initial state, between two adjacent box bodies 310, the power supply module 313 located on the lower box body 310 is abutted against the contact module 312 located on the upper box body 310, and the power supply module 313 contacts the contact module 312, so that the contact sensing PCB boards and adjacent position sensing elements 321 on the box bodies 310 other than the bottom box body 310 are powered and operate normally. The contact power supply method is a prior art and will not be described in detail here. When the pneumatic push rod 351 is started to drive the multiple box bodies 310 to separate, when the box bodies 310 other than the bottom box body 310 are pushed up to push away the obstacles, the contact modules 312 on the box bodies 310 other than the bottom box body 310 lose power supply due to separation from the power supply module 313. Therefore, no signal should be provided to avoid generating unnecessary contact signals. When the multiple box bodies 310 restore to their initial state, when the contact module 312 is pressed onto the adjacent power supply module 313, the toothed belts 315 on the opposite sides of the power supply module 313 are driven by the adjacent toothed rollers to rotate continuously, and the outer wall of the toothed belt 315 has abrasive material, so that the toothed belt 315 can rub the blades and other debris that may be sandwiched between the contact module 312 and the power supply module 313 away from the power supply module 313 through the abrasive material on the outer wall, so that the contact module 312 and the power supply module 313 can be contacted and powered by the power supply module 313. A battery can be installed inside the box body 310 to power the adjacent driving motor. The driving motor can drive the adjacent toothed belt 315 to rotate by driving the adjacent toothed rollers to rotate. The toothed roller can be a plurality of toothed pulleys sleeved on the same axle to ensure meshing with the teeth of the toothed belt 315.

[0045] like Figure 1 or Figure 8 As shown, in this embodiment, the pushing mechanism 400 includes:

[0046] The U-shaped frame 410, the scissor-type bracket 420 and the slide rail 440, the U-shaped frame 410 is fixedly connected to one end of the base 220, and the adjusting screw 411 is rotatably connected between the two arms of the U-shaped frame 410, and the adjusting screw 411 is a positive and negative threaded screw. The scissor-type bracket 420 includes a plurality of support rods, and one end of the two support rods located at one end of the scissor-type bracket 420 is rotatably connected to a support plate, and one end of the two support plates is fixedly connected to a screw cylinder 421, and the inner side walls of the two screw cylinders 421 are screwed and connected to the outer side wall of the adjusting screw 411. Then, one side of the slide rail 440 is fixedly connected to the other end of the connecting plate 320 located at the bottom, the slide rail 440 includes two parallel slides, and the two slides are slidably clamped with a movable clamping plate 441, one end of the two support rods located at the other end of the scissor-type bracket 420 is rotatably connected to one end of the two movable clamping plates 441 respectively, one end of the U-shaped frame 410 is fixedly connected to the motor box 430, and a power motor is arranged inside the motor box 430, and the motor end of the power motor is fixedly connected to one end of the adjusting screw rod 411.

[0047] In the specific implementation, the scissor-type bracket 420 is a prior art and will not be described in detail here. After the multiple box bodies 310 are separated and the obstruction is pushed up, the power motor is started to drive the adjusting screw rod 411 to rotate, and the adjusting screw rod 411 is a positive and negative screw rod, so that when the adjusting screw rod 411 rotates, it can drive the two screw-on cylinders 421 to move toward or away from each other, so that the two screw-on cylinders 421 drive the scissor-type bracket 420 to extend or retract so that the lowest connecting plate 320 moves to the position where the corn stalk was sensed last time. The power motor can be controlled to open and close through a motor controller. The motor controller is a prior art and will not be described in detail here, so that the scissor-type bracket 420 controls the position of the lowest connecting plate 320, and the lowest connecting plate 320 and the contact sensing PCB board in the lowest box body 310 can be connected for power supply through electric wires, and the circuit can be bonded and laid on the scissor-type bracket 420.

[0048] Embodiment 2

[0049] On the basis of the first embodiment, the convex ring 422 is used to improve the stability between the scissor-type bracket 420 and the lowermost connecting plate 320 .

[0050] like Figure 6 and Figure 8 As shown, in this embodiment, a slot 322 is provided on the other side of the connecting plate 320 at the bottom, and a convex ring 422 is fixedly sleeved on one end of the outer side walls of multiple rotating shafts located in the middle of the scissor-type bracket 420, and any convex ring 422 is movably engaged in the slot 322, and one side of the support rod of the scissor-type bracket 420 is a chamfered structure.

[0051] During specific implementation, the convex ring 422 on the middle rotating shaft of the scissors-type bracket 420 can be inserted into the slot 322 on the lowest connecting plate 320, thereby increasing the contact points between the scissors-type bracket 420 and the lowest connecting plate 320, and improving the stability of the lowest connecting plate 320. When the scissors-type bracket 420 retracts, since the support rods of the scissors-type bracket 420 are chamfered structures, the edges of the support rods of the scissors-type bracket 420 are thinner, so that two adjacent support rods on the scissors-type bracket 420 form a scissor-like structure, which can shear off blades that may extend between the support rods of the scissors-type bracket 420.

[0052] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0053] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A sensor for automatically aligning rows of a corn combine harvester, characterized in that: include: The frame (100) has a rotation through hole on its bottom surface; A connection box (200), the top end of which is fixedly connected to the bottom surface of the frame (100); an angle detector is provided inside the connection box (200); the angle detector is fixedly connected to a detection shaft (210); the detection shaft (210) is rotatably sleeved inside the rotating through hole; and a base (220) is fixedly sleeved at the top end of the detection shaft (210); The toggle mechanism (300) is located at one end of the base (220), the toggle mechanism (300) comprises a plurality of box bodies (310) arranged vertically in sequence, and a connecting plate (320) is provided on one side of the plurality of box bodies (310), a plurality of position sensing elements (321) are fixedly connected to one side of the plurality of connecting plates (320), and a contact sensing PCB board is provided inside the plurality of box bodies (310), and the plurality of contact sensing PCB boards are electrically connected to the plurality of position sensing elements (321) on the adjacent connecting plates (320), except for the connecting plate (320) located at the bottom. 0), one side of the other connecting plates (320) is fixedly connected to one side of the adjacent box body (310), and both ends of the other sides of the multiple box bodies (310) are fixedly connected with sleeve rods (330), and except for the square box body (310) located at the bottom, the two sleeve rods (330) on the other box bodies (310) are rotatably connected with support arms (331), and a circular hole is opened at one end of each support arm (331), and the inner side walls of the circular holes at one end of the two support arms (331) on any box body (310) are respectively rotatably sleeved with the outer side walls of the two sleeve rods (330) on the box body (310) below; The pushing mechanism (400) is located on one side of the lowermost box body (310).

2. The automatic row alignment detection sensor for corn combine harvester according to claim 1, characterized in that: The pushing mechanism (400) comprises: A U-shaped frame (410) is fixedly connected to one end of the base (220), and an adjusting screw rod (411) is rotatably connected between two arms of the U-shaped frame (410), wherein the adjusting screw rod (411) is a positive and negative threaded screw rod; The scissor-type bracket (420) comprises a plurality of support rods, one end of two support rods located at one end of the scissor-type bracket (420) are both rotatably connected to support plates, and one end of the two support plates are both fixedly connected to screw-on cylinders (421), and the inner side walls of the two screw-on cylinders (421) are both screw-on connected to the outer side walls of the adjusting screw rod (411); The slide rail (440) has one side fixedly connected to one end of the other side of the connection plate (320) located at the bottom, and the slide rail (440) includes two parallel slideways, and the insides of the two slideways are both slidably clamped with a movable clamping plate (441), and one end of the two support rods located at the other end of the scissor-type bracket (420) is rotatably connected to one end of the two movable clamping plates (441) respectively.

3. The automatic row alignment detection sensor for corn combine harvester according to claim 2, characterized in that: A return spring (221) is fixedly connected to the outer side wall of the base (220), and one end of the return spring (221) is fixedly connected to an inner side wall of the frame (100) via a connecting piece.

4. The automatic row alignment detection sensor for corn combine harvester according to claim 3, characterized in that: One end of the base (220) is fixedly connected to a fixing rod (340), and one end of the fixing rod (340) is rotatably connected to a guide rail (341). The other sides of the two box bodies (310) located at the top and the bottom are fixedly connected to sliders (311), and the two sliders (311) are slidably engaged inside the guide rail (341).

5. The automatic row alignment detection sensor for corn combine harvester according to claim 4, characterized in that: The guide rail (341) is equipped with a rotating plate (350), and a rotating hole is opened at one end of the rotating plate (350), the inner side wall of the rotating hole is rotatably sleeved with the outer side wall of the connecting box (200), a clamping block (342) is slidably clamped inside the guide rail (341), and one end of the clamping block (342) is rotatably connected to a connecting shaft, and a pneumatic push rod (351) is fixedly connected to the top surface of the other end of the rotating plate (350), and the movable end of the pneumatic push rod (351) is fixedly connected to one end of the connecting shaft.

6. The automatic row alignment detection sensor for corn combine harvester according to claim 2, characterized in that: Except for the box body (310) located at the bottom, one end of the bottom surface of the other box bodies (310) is fixedly connected to a contact module (312), and except for the box body (310) located at the top, the other end of the top surface of the other box bodies (310) is fixedly connected to a power supply module (313), and the contact modules (312) on two adjacent box bodies (310) are movably connected to the power supply modules (313).

7. The automatic row alignment detection sensor for corn combine harvester according to claim 6, characterized in that: Except for the box body (310) located at the top, the other ends of the top surfaces of the other box bodies (310) are fixedly connected to two U-shaped plates (314), the two U-shaped plates (314) on any box body (310) are respectively located on opposite sides of adjacent power supply modules (313), the two ends of the top surface of any U-shaped plate (314) are rotatably connected to toothed rollers, and a toothed belt (315) is rotatably sleeved between the outer side walls of the two toothed rollers on any U-shaped plate (314), and two driving motors are arranged under any U-shaped plate (314), and any driving motor is located inside an adjacent box body (310), and the motor end of any driving motor is fixedly connected to one end of a toothed roller on the adjacent U-shaped plate (314).

8. The automatic row alignment detection sensor for corn combine harvesters according to claim 7, characterized in that: One end of the U-shaped frame (410) is fixedly connected to a motor box (430), and a power motor is arranged inside the motor box (430), and the motor end of the power motor is fixedly connected to one end of the adjusting screw rod (411).

9. The automatic row alignment detection sensor for corn combine harvester according to claim 2, characterized in that: A slot (322) is provided on the other side of the lowest connecting plate (320), and a plurality of outer side walls of the rotating shafts in the middle of the scissor-type bracket (420) are fixedly sleeved with a convex ring (422) at one end, and any convex ring (422) is movably engaged in the slot (322).

10. The automatic row alignment detection sensor for corn combine harvester according to claim 9, characterized in that: One side of the support rods of the scissor-type support (420) is a chamfered structure.

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