Double-bud section sugarcane uniform planting machine

Abstract

The application discloses a double-bud-section sugarcane uniform-amount planting machine, which comprises a poking hopper, a poking mechanism and a limiting mechanism; the poking hopper is provided with a poking channel, and the cross section of the poking channel is V-shaped; the limiting mechanism comprises a fixed mounting plate, a limiting plate and a limiting reset elastic piece; the fixed mounting plate is fixedly arranged; the top of the limiting plate is rotationally connected to the fixed mounting plate, and the two side faces of the limiting plate are matched with the two side faces of the poking hopper; the poking channel is located below the gap of the bottom face of the limiting plate and forms a limiting hole; the limiting reset elastic piece is connected between the limiting plate and the fixed mounting plate; in the working state, when the excessive sugarcane sections move forward, the limiting plate is used for blocking and limiting the sugarcane sections, and the limiting plate rotates backward around the rotating center of the top while being limited. The double-bud-section sugarcane uniform-amount planting machine can limit the amount of the poked sugarcane sections, so that uniform-amount seeding is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to a sugarcane planting machine, in particular to a double bud section sugarcane uniform planting machine. BACKGROUND

[0002] Sugarcane is the main sugar crop in China, and its planting is mainly concentrated in hilly and mountainous areas in Guangxi, Yunnan, Guangdong (Zhanjiang) and other places. Mechanized planting can replace manual labor, greatly reduce labor costs and promote the sustainable development of the industry.

[0003] The existing mechanized sugarcane planting mainly adopts whole stalk planting, real-time cutting planting, pre-cutting planting (single bud section, double bud section). In the above seeding process of the sugarcane planting machine, the ridging, seeding, fertilizing and film mulching processes after land tillage are completed. Among them, sugarcane uniform seeding is one of the key technologies for cost reduction and efficiency increase in sugarcane planting. However, when the existing sugarcane planting machine is seeding, the number of sugarcane sections that are pushed out of the seed box onto the seed pusher is not constant, often exceeding the desired seeding number, resulting in uneven seeding. SUMMARY

[0004] The purpose of the present application is to overcome the above-mentioned problems, and to provide a double bud section sugarcane uniform planting machine which can limit the number of sugarcane sections that are pushed out, thereby achieving uniform seeding.

[0005] The purpose of the present application is achieved by the following technical solutions:

[0006] A double bud section sugarcane uniform planting machine, comprising a pushing hopper for stacking sugarcane, a pushing-out mechanism for pushing out the sugarcane on the pushing hopper, and a limiting mechanism for limiting the sugarcane sections;

[0007] The pushing hopper is provided with a pushing channel, and the cross section of the pushing channel is V-shaped;

[0008] The pushing-out mechanism comprises a pushing finger and a pushing-out driving mechanism for driving the pushing finger to move;

[0009] The limiting mechanism comprises a fixed mounting plate, a limiting plate and a limiting reset elastic element, the fixed mounting plate is fixedly arranged; the top of the limiting plate is rotatably connected to the fixed mounting plate, and the two side surfaces of the limiting plate cooperate with the two side surfaces of the pushing hopper; the pushing channel is located below the gap of the bottom surface of the limiting plate to form a limiting hole; the limiting reset elastic element is connected between the limiting plate and the fixed mounting plate; in the working state, when the excessive sugarcane sections move forward, they are blocked by the limiting plate, and at the same time the limiting plate rotates backward around the rotating center of the top; when the excessive sugarcane sections move downward, the limiting reset elastic element restores the deformation to release the potential energy and drives the limiting plate to reset.

[0010] The working principle of the above-mentioned double-bud-section sugarcane uniform-quantity planter is as follows:

[0011] During operation, workers put sugarcane sections into the hopper, and the sugarcane sections below are received in the poking channel of the poking hopper. Since the cross section of the poking channel is V-shaped, when the sugarcane sections enter the poking channel, the sugarcane sections are automatically placed in order along the length direction of the poking channel.

[0012] The poking-out mechanism is started, and the poking finger is driven by the poking-out driving mechanism to move at the bottom of the poking channel, thereby sequentially poking out the sugarcane sections from the limiting hole. When excessive sugarcane sections overlap the sugarcane sections below and move forward with the poking finger, the limiting plate blocks and limits the excessive sugarcane sections. Since the limiting reset elastic member is connected between the limiting plate and the fixed mounting plate, the limiting plate rotates backward around the rotation center at the top while being limited (at this time, the limiting reset elastic member is deformed to store energy), so that the excessive sugarcane sections can be blocked and limited, and the excessive sugarcane sections have time and space to move downward to their own positions, thereby realizing uniform seeding. Further, when the excessive sugarcane sections move downward, the limiting reset elastic member restores the deformation, and simultaneously releases the potential energy to reset the limiting plate.

[0013] In one preferred embodiment of the present application, the limiting reset elastic member is a torsion spring, which is sleeved on the rotation center line of the limiting plate, and the two ends of the torsion spring are fixedly connected with the fixed mounting plate and the limiting plate, respectively.

[0014] In one preferred embodiment of the present application, the limiting plate comprises a first limiting plate and a second limiting plate, and the top of the first limiting plate is rotationally connected with the fixed mounting plate.

[0015] The second limiting plate is provided with two second limiting plates, and the two second limiting plates are connected with the first limiting plate through sliding adjustment structures, respectively. Along the poking direction of the poking channel, the two second limiting plates are arranged side by side. The mutually faraway sides of the two second limiting plates are matched with the two inclined sides of the poking hopper, respectively.

[0016] The sliding adjustment structure comprises sliding adjustment holes and locking bolts, the sliding adjustment holes are provided with two, the two sliding adjustment holes are parallelly arranged on the first limiting plate, the sliding adjustment holes are arranged in a slanting manner from bottom to top and away from the other second limiting plate, and the locking bolts are connected to the threaded holes of the second limiting plate through the sliding adjustment holes. Through the above structure, the height of the second limiting plate can be adjusted, different sizes of limiting holes are obtained, and the seeding work of different sizes of sugarcane segments is applicable. Further, the sliding adjustment holes are arranged in a slanting manner, different limiting holes can be obtained, the second limiting plate can be adjusted closely to the side wall of the pushing channel, the effect of profile adjustment is achieved, and a large gap is avoided. If there is a gap between the second limiting plate and the inner wall of the pushing channel, the second limiting plate and the inner wall of the pushing channel can carry the sugarcane when the second limiting plate is lifted and then falls, therefore, the second limiting plate and the inner wall of the pushing channel are closely attached, a very small gap is obtained, the distance between the bottom of the second limiting plate and the bottom of the pushing channel can be freely adjusted, and the gap between the second limiting plate and the inner wall of the pushing channel can be ensured to be zero during the adjustment, therefore, when the second limiting plate is lifted, the sugarcane cannot be clamped between the second limiting plate and the inner wall of the pushing channel.

[0017] Further, the two second limiting plates are arranged in an overlapping manner at the end close to each other, so that the two second limiting plates can be overlapped and staggered when being adjusted downward, and the two second limiting plates can be unfolded in sequence when being adjusted upward, the middle position cannot be empty, and the normal limiting and blocking work is facilitated.

[0018] In one preferred scheme of the present application, a prior point touch hard stone detection mechanism is further included, which comprises a detection rake, a torque sensor and a filter amplifier. The detection rake is arranged to extend forward and comprises a support rod, a cross rod and a plurality of detection teeth. The detection teeth are rotatably connected to the cross rod. The support rod is fixedly connected between the cross rod and a furrowing plough of the planter. The torque sensor is arranged at the rotating connection between the detection teeth and the cross rod. Through the above structure, the front detection teeth are extended forward along with the furrowing plough into the soil, and the detection teeth are subjected to the action of the soil and hard stones during the planting operation to make the torque sensor generate a torque signal. Further, through the arrangement of a plurality of detection teeth and the spacing between the detection teeth, the vibration without hard stones and the resistance of hard stones smaller than the spacing between two detection teeth can be directly filtered out. When the detection teeth encounter hard stones larger than the spacing between two teeth or a plurality of teeth, a large torque signal is generated by the torque sensor. The filtered and amplified signal is transmitted to the single-chip microcomputer for analysis. Through the real-time detection and analysis of the abnormal change of the electric signal, it is determined whether there is a large area of hard stones in the soil to affect the operation safety of the plough body of the sugarcane planter, so as to effectively avoid the hard stones.

[0019] If it is judged that there is hard stone, the single-chip microcomputer generates an electric signal to control the proportional throttling reversing valve, controls the operation of the hydraulic cylinder, makes the planting machine on the suspension device lift up, installs an angle sensor inside the tractor, detects the lifting height of the planting machine by detecting the rotating angle of the supporting arm, then transmits the height signal to the single-chip microcomputer to form a closed loop control.

[0020] In one preferred scheme of the present application, a speed-following seeding mechanism is further included, which comprises a ground wheel, a speed measuring gear, a Hall sensor, a hydraulic motor, a proportional amplifier and a proportional throttle valve.

[0021] The speed measuring gears are provided in two groups, and the two groups of speed measuring gears are coaxially sleeved on the hub of the ground wheel and the seed sowing chain wheel of the pulling-out driving mechanism, respectively.

[0022] The Hall sensors are provided in two, and the two Hall sensors are fixed on one side of the speed measuring gears through sensor supports, with the head of the Hall sensor facing the tooth structure of the speed measuring gear.

[0023] The hydraulic motor is connected with the seed sowing chain wheel of the pulling-out driving mechanism.

[0024] Further, the corresponding speed measuring gear is rotated by the rotation of the ground wheel, and the corresponding Hall sensor transmits the speed signal detected to the single-chip microcomputer, and the single-chip microcomputer converts the speed signal of the ground wheel into a voltage signal to control the opening of the proportional throttle valve, so as to adjust the rotating speed of the hydraulic motor; when the hydraulic motor drives the seed sowing chain wheel to rotate, the corresponding speed measuring gear also starts to rotate, and the corresponding Hall sensor detects the rotating speed signal of the chain wheel and transmits it to the single-chip microcomputer to judge whether the rotating speed of the chain wheel is within the expected rotating speed range, to form a closed feedback control. Further, the single-chip microcomputer is connected with a human-computer interaction system, which can monitor the vehicle speed and the rotating speed of the seed sowing chain wheel in real time, and can also set other parameters.

[0025] Through the calculation and experiment of researchers, according to the seeding requirements, the relationship between the vehicle speed of the planting machine and the rotating speed of the seed sowing chain wheel y=ax+b can be obtained. Through the human-computer interaction, the parameters a and b are directly input. The seed sowing chain wheel is driven by the hydraulic motor, and the speeds of the two are the same. Because the single-chip microcomputer has stored the relationship between the analog quantity of the proportional throttle valve and the rotating speed of the hydraulic motor, the first function relationship between the vehicle speed y of the planting machine and the analog quantity x1 of the proportional amplifier can be obtained through the program calculation of the single-chip microcomputer, to realize the adaptive program control of the improved speed-following seeding control of the planting machine.

[0026] Further, the distance between the Hall sensor and the highest point of the speed measuring gear is 2mm.

[0027] Further, the hub of the ground wheel is provided with two angular rolling bearings between the hub and the axle, and the inside bearing of the hub is sealed and rotates; the large end cover of the ground wheel is pressed on the shoulder of the ground wheel axle by the arm, and the large end cover of the ground wheel is kept relatively static with the ground wheel axle, and the ground wheel drives the hub and the speed measuring gear to rotate.

[0028] Further, the ground wheel is connected to the frame through an adjustable suspension mechanism, and the adjustable suspension mechanism comprises an arm and an elastic adjusting structure.

[0029] The two ends of the arm are respectively rotationally connected to the ground wheel and the frame.

[0030] The elastic adjusting structure comprises an adjusting rod, a spring, an adjusting fixed sleeve and a locking bolt; one end of the adjusting rod is rotationally connected to the ground wheel, and a plurality of elastic adjusting holes distributed along the length direction are arranged on the adjusting rod; the spring is sleeved on the adjusting rod; the adjusting fixed sleeve comprises an upper adjusting fixed sleeve and a lower adjusting fixed sleeve, and the upper adjusting fixed sleeve and the lower adjusting fixed sleeve are both sleeved on the adjusting rod; the spring is abutted between the upper adjusting fixed sleeve and the lower adjusting fixed sleeve; the upper adjusting fixed sleeve is rotationally connected to the frame; the locking bolt is provided with two, and the two locking bolts pass through different elastic adjusting holes to limit and fix the upper adjusting fixed sleeve and the lower adjusting fixed sleeve. Through the above structure, the uneven road surface in the field can be adapted, the ground wheel slip rate is affected by the vertical force on the center of the ground wheel, the spring pre-tightening force can be adjusted, the ground wheel slip rate is reduced, the ground wheel is convenient to install and disassemble, and the speed measuring needs of other crop planting can be adapted.

[0031] Compared with the prior art, the present application has the following beneficial effects:

[0032] The double-bud-section sugarcane uniform-amount planting machine can block and limit the excessive sugarcane sections, and will not cause hard damage to the sugarcane sections, so that uniform-amount planting is realized. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a plan view of the seeding mechanism of the double-bud-section sugarcane uniform-amount planting machine.

[0034] Figure 2 It is a front view of the limiting mechanism.

[0035] Figure 3 It is a perspective structural schematic view of the limiting mechanism.

[0036] Figure 4 It is a working diagram of the limiting mechanism.

[0037] Figure 5 is a side view of the speed following seeding mechanism in one direction of the invention.

[0038] Figure 6 is a side view of the speed following seeding mechanism in another direction of the invention, with the ground wheel hidden.

[0039] Figure 7 is a front view of the elastic adjustment mechanism of the invention.

[0040] Figure 8 is a front view of the stone avoiding mechanism of the invention.

[0041] Figure 9 is a top view of the stone avoiding mechanism of the invention.

[0042] Figure 10 is the avoiding working process of the stone avoiding mechanism of the invention.

[0043] Figure 11 is the speed following seeding working process of the speed following seeding mechanism of the invention.

[0044] Figure 12 is the electro-hydraulic control principle diagram of the double-bud-section sugarcane uniform planting machine of the invention, in which the first thick solid line represents the support rod, the second thick solid line represents the hydraulic pipeline, the thin solid line represents the electric wire, a represents the tractor, b represents the suspension device, c represents the tractor hydraulic system, d represents the tractor rear wheel, e represents the pre-touch hard stone detection mechanism, f represents the ground wheel mechanism, and g represents the planting mechanism. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described below in combination with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0046] The double-bud-section sugarcane uniform planting machine of the present embodiment comprises a seeding mechanism, a pre-touch hard stone detection mechanism, and a speed following seeding mechanism.

[0047] Referring to Figure 1 , the seeding mechanism comprises a pushing hopper 1 for stacking sugarcane, a pushing-out mechanism for pushing out the sugarcane on the pushing hopper 1, and a limiting mechanism for limiting the sugarcane section; the pushing hopper 1 is provided with a pushing channel, and the cross section of the pushing channel is V-shaped; specifically, the pushing hopper 1 and the pushing-out mechanism of the present embodiment are provided with two groups; the pushing-out mechanism comprises a pushing finger 2 and a pushing-out driving mechanism for driving the pushing finger 2 to move; specifically, the pushing-out driving mechanism can refer to the existing structure.

[0048] Referring to Figures 1-4The limiting mechanism comprises a fixed mounting plate 3, a limiting plate and a limiting reset elastic member 4, the fixed mounting plate 3 is fixedly arranged, the limiting plate comprises a first limiting plate 5 and a second limiting plate 6, the top of the first limiting plate 5 is rotationally connected to the fixed mounting plate 3, and the two side faces of the second limiting plate 6 are matched with the two side faces of the poking hopper 1; the poking channel is arranged in the gap below the bottom face of the second limiting plate 6 to form a limiting hole; and the limiting reset elastic member 4 is connected between the first limiting plate 5 and the fixed mounting plate 3. In the working state, when the excessive sugarcane segments move forward, the limiting plate blocks and limits the sugarcane segments, and at the same time, the limiting plate rotates backward around the rotation center of the top; when the excessive sugarcane segments move downward, the limiting reset elastic member 4 restores the deformation to release the potential energy and drives the limiting plate to reset.

[0049] Referring to Figures 3-4 The limiting reset elastic member 4 is a torsion spring, the torsion spring is sleeved on the rotation center line of the first limiting plate 5, and the two ends of the torsion spring are fixedly connected with the fixed mounting plate 3 and the limiting plate respectively.

[0050] Referring to Figures 1-4 The second limiting plate 6 is provided with two second limiting plates 6, the two second limiting plates 6 are connected with the first limiting plate 5 through sliding adjustment structures respectively; the two second limiting plates 6 are arranged side by side along the poking direction of the poking channel; the mutually faraway side faces of the two second limiting plates 6 are matched with the two inclined side faces of the poking hopper 1 respectively; the sliding adjustment structure comprises a sliding adjustment hole 5-1 and a locking bolt (not shown in the figure), the sliding adjustment hole 5-1 is provided with two sliding adjustment holes 5-1, the two sliding adjustment holes 5-1 are arranged in parallel on the first limiting plate 6; the sliding adjustment hole 5-1 is arranged in an inclined manner from bottom to top in a direction away from the other second limiting plate 6; and the locking bolt is connected with the threaded hole of the second limiting plate 6 through the sliding adjustment hole 5-1. Through the above structure, the height of the second limiting plate 6 can be adjusted, the limiting hole of different sizes is obtained, and the seeding work of sugarcane segments of different sizes is achieved. Further, through the sliding adjustment hole 5-1 arranged in an inclined manner, different limiting holes can be obtained, and the side wall of the poking channel can be adjusted closely, the effect of profile adjustment is achieved, and a large gap is avoided. If there is a gap between the second limiting plate 6 and the inner wall of the poking channel, the second limiting plate 6 and the inner wall of the poking channel can clamp the sugarcane when the second limiting plate 6 is lifted and then falls, therefore, the second limiting plate 6 and the inner wall of the poking channel are closely matched, a very small gap is obtained, the distance between the bottom of the second limiting plate 6 and the bottom of the poking channel can be adjusted freely, and the inner wall of the second limiting plate 6 and the poking channel can be ensured to have zero gap in the adjusting process, therefore, when the second limiting plate 6 is lifted, the sugarcane cannot be clamped between the second limiting plate 6 and the inner wall of the poking channel.

[0051] Further, the two second limit plates 6 are arranged in overlapping manner at one end close to each other, so that when adjusting downward, the two second limit plates 6 can be overlapped and staggered, and when adjusting upward, the two second limit plates 6 are unfolded in sequence and the middle position will not be empty, which is beneficial to ensure the normal limiting and blocking work.

[0052] Referring to Figures 8-9 , the preceding point touch hard stone detection mechanism comprises a detection rake, a torque sensor 9 and a filter amplifier 10, the detection rake is arranged to extend forward, the detection rake comprises a support rod 19, a cross rod 20 and a plurality of detection teeth 21, the detection teeth 21 are rotationally connected to the cross rod 20, the support rod 19 is fixedly connected between the cross rod 20 and a furrower 22 of the planter, and the torque sensor 9 is arranged at the rotationally connected position of the detection teeth 21 and the cross rod 20. Through the above structure, the front detection teeth 21 are deepened into the soil along with the furrower 22, and the detection teeth 21 are subjected to the action of the soil and hard stones in the planting operation, so that the torque sensor generates a torque signal. Further, through the arrangement of the plurality of detection teeth 21 and the spacing between the detection teeth 21, the working vibration without hard stones and the resistance of hard stones smaller than the spacing between the two detection teeth 21 can be directly filtered out, when the detection teeth collide with hard stones larger than the spacing between the two teeth or the spacing between the multiple teeth, the torque sensor 9 generates a large torque signal, the filtered and amplified signal is transmitted to the single-chip microcomputer for analysis, and through the real-time detection and analysis of the abnormal change of the electric signal, it is determined whether there is a large area of hard stones in the soil to affect the safety of the planter in operation, so as to effectively avoid the hard stones.

[0053] Referring to Figure 10 , if it is judged that there is a hard stone, the single-chip microcomputer generates an electric signal to control the proportional throttling reversing valve 25, controls the operation of the hydraulic cylinder, lifts the planter on the suspension device, installs an angle sensor 23 inside the tractor, detects the lifting height of the planter by detecting the rotation angle of the support arm, and then transmits the height signal to the single-chip microcomputer to form a closed-loop control. After the planter safely passes through the hard stone, the single-chip microcomputer transmits a signal to make the planter descend to the original planting height.

[0054] Referring to Figures 5-6 , the speed-dependent seeding mechanism comprises a ground wheel 10, speed measuring gears 11, Hall sensors 12, a hydraulic motor 26, a proportional amplifier and a proportional throttling valve 24, the two sets of speed measuring gears 11 are coaxially arranged on the hub of the ground wheel 10 and the seed sowing chain wheel 27 of the pulling-out driving mechanism respectively, the two Hall sensors 12 are fixed on one side of the speed measuring gears 11 through sensor supports respectively, and the heads of the Hall sensors 12 face the tooth structure of the speed measuring gears 11, and the hydraulic motor 26 is connected with the seed sowing chain wheel 27 of the pulling-out driving mechanism.

[0055] Referring to Figures 11-12, the corresponding speed measuring gear 11 is rotated by the rotation of the ground wheel 10, the corresponding Hall sensor 12 will detect the speed signal and transmit it to the single-chip microcomputer, the single-chip microcomputer will convert the speed signal of the ground wheel 10 into a voltage signal, control the opening of the proportional throttle valve 24, and thus adjust the rotating speed of the hydraulic motor 26; when the hydraulic motor 26 drives the seed sowing sprocket 27 to rotate, the corresponding speed measuring gear 11 also starts to rotate, and the corresponding Hall sensor 12 detects the rotating speed signal of the sprocket and transmits it to the single-chip microcomputer to determine whether the rotating speed of the sprocket is within the expected rotating speed range, forming a closed feedback control. Further, the single-chip microcomputer is connected to a human-computer interaction system, which can monitor the vehicle speed and the rotating speed of the seed sowing sprocket 27 in real time, and can also set other parameters.

[0056] Further, according to the seeding requirements, the relationship y=ax+b between the vehicle speed and the rotating speed of the seed sowing sprocket 27 of the double-bud-section sugarcane uniform planting machine can be obtained through research and calculation by researchers. Through human-computer interaction, the parameters a and b can be directly input. The seed sowing sprocket is driven by the hydraulic motor, and the speeds of the two are the same. Because the single-chip microcomputer has stored the relationship between the analog quantity of the proportional throttle valve 24 and the rotating speed of the hydraulic motor, the first function relationship between the vehicle speed y of the double-bud-section sugarcane uniform planting machine and the analog quantity x1 of the proportional amplifier can be obtained through program calculation of the single-chip microcomputer, realizing the adaptive program control of the improved double-bud-section sugarcane uniform planting machine.

[0057] Further, the distance between the Hall sensor 12 and the highest point of the speed measuring gear 11 is 2mm.

[0058] Further, two angular rolling bearings are installed in the middle of the hub and the axle of the ground wheel 10, and the bearings in the hub are sealed and rotate; the large end cover of the ground wheel 10 is tightly pressed on the shoulder of the ground wheel 10 axle by the arm, and the large end cover of the ground wheel 10 keeps relatively stationary with the ground wheel 10 axle, and the ground wheel 10 rotates to drive the hub and the speed measuring gear 11 to rotate.

[0059] Referring to Figures 5-7The ground wheel 10 is connected to the frame through an adjustable suspension mechanism, which comprises a supporting arm 13 and an elastic adjusting structure; two ends of the supporting arm 13 are rotatably connected to the ground wheel 10 and the frame respectively; the elastic adjusting structure comprises an adjusting rod 14, a spring 15, an adjusting fixing sleeve and a locking bolt 16; one end of the adjusting rod 14 is rotatably connected to the ground wheel 10, and a plurality of elastic adjusting holes 14-1 are arranged on the adjusting rod 14 along the length direction; the spring 15 is sleeved on the adjusting rod 14; the adjusting fixing sleeve comprises an upper adjusting fixing sleeve 17 and a lower adjusting fixing sleeve 18, and the upper adjusting fixing sleeve 17 and the lower adjusting fixing sleeve 18 are both sleeved on the adjusting rod 14; the spring 15 is abutted between the upper adjusting fixing sleeve 17 and the lower adjusting fixing sleeve 18; the upper adjusting fixing sleeve 17 is rotatably connected to the frame; the locking bolt 16 is provided with two, and the two locking bolts 16 pass through different elastic adjusting holes 14-1 to limit and fix the upper adjusting fixing sleeve 17 and the lower adjusting fixing sleeve 18. Through the above structure, uneven field road surface can be adapted, the ground wheel 10 slip rate is affected by the vertical force on the center of the ground wheel 10, the spring 15 pre-tightening force can be adjusted, the ground wheel 10 slip rate is reduced, the ground wheel 10 is convenient to install and disassemble, and the speed measurement requirement of other crop planting can be adapted.

[0060] Referring to Figures 1-4 The working principle of the double-bud-section sugarcane uniform-amount planting machine is as follows:

[0061] During work, workers put sugarcane sections into the hopper, and the lower sugarcane sections are placed in the poking channel of the poking hopper 1. Since the cross section of the poking channel is V-shaped, when the sugarcane sections enter the poking channel, the sugarcane sections are automatically placed along the length direction of the poking channel in order.

[0062] The poking mechanism is started, and the poking fingers 2 are driven by the poking driving mechanism to move at the bottom of the poking channel, so as to sequentially poke the sugarcane sections out of the limiting holes. When there are excessive sugarcane sections overlapping on the lower sugarcane sections and the poking fingers 2 move forward, the limiting plates block and limit the excessive sugarcane sections. Since the limiting reset elastic members 4 are connected between the first limiting plates 5 and the fixed mounting plates 3, the limiting plates rotate backward around the rotating center at the top while being limited (at this time, the limiting reset elastic members 4 are deformed and store energy), so that the excessive sugarcane sections can be blocked and limited, and the excessive sugarcane sections have time and space to move downward to their own positions, so that uniform seeding is realized. Further, when the excessive sugarcane sections move downward, the limiting reset elastic members 4 restore the deformation and drive the limiting plates to reset.

[0063] The above is the preferred embodiment of the present application, but the embodiment of the present application is not limited by the above, and any change, modification, substitution, combination, simplification, etc. made without departing from the spirit and principles of the present application shall be equivalent replacement and included in the protection scope of the present application.

Claims

1. A double-bud sugarcane uniform planting machine, characterized in that: It includes a hopper for stacking sugarcane, a dispensing mechanism for dispensing sugarcane from the hopper, and a limiting mechanism for limiting the position of sugarcane segments; The feeding hopper is provided with a feeding channel, and the cross section of the feeding channel is V-shaped; The dialing mechanism includes a dial finger and a dialing drive mechanism for driving the dial finger to move; The limiting mechanism includes a fixed mounting plate, a limiting plate and a limiting reset elastic member, wherein the fixed mounting plate is fixedly arranged; the top of the limiting plate is rotatably connected to the fixed mounting plate, and the two side surfaces of the limiting plate cooperate with the two side surfaces of the diverter hopper; the gap below the bottom surface of the limiting channel constitutes a limiting hole; the limiting reset elastic member is connected between the limiting plate and the fixed mounting plate; in a working state, when the excess sugarcane segment moves forward, it is blocked and limited by the limiting plate, and at the same time, the limiting plate rotates backward around the rotation center of the top; when the excess sugarcane moves downward, the limiting reset elastic member restores its deformation and releases potential energy to drive the limiting plate to reset; The limiting plate includes a first limiting plate and a second limiting plate, and the top of the first limiting plate is rotatably connected to the fixed mounting plate; There are two second limit plates, each connected to the first limit plate via a sliding adjustment structure; the two second limit plates are arranged side by side along the feeding direction of the feeding channel; the sides of the two second limit plates facing away from each other are respectively engaged with the two inclined sides of the feeding hopper; The sliding adjustment structure includes a sliding adjustment hole and a locking bolt. There are two sliding adjustment holes, which are opened in parallel on the first limiting plate; the sliding adjustment holes are inclined from bottom to top in the direction away from the other second limiting plate; the locking bolt passes through the sliding adjustment hole and is connected to the threaded hole of the second limiting plate.

2. The double-bud sugarcane uniform planting machine according to claim 1, characterized in that: The limit reset elastic member is a torsion spring, which is sleeved on the rotation center line of the limit plate, and the two ends of the torsion spring are fixedly connected to the fixed installation plate and the limit plate respectively.

3. The double-bud sugarcane uniform planting machine according to claim 1, characterized in that: The two second limiting plates are arranged to overlap at ends close to each other.

4. The double-bud sugarcane uniform planting machine according to claim 1, characterized in that: It also includes a first-step point-touch hard stone detection mechanism, which includes a detection rake, a torque sensor, and a filter amplifier. The detection rake is extended forward and includes a support rod, a cross rod and a plurality of detection teeth. The detection teeth are rotatably connected to the cross rod; the support rod is fixedly connected between the cross rod and the furrowing plow of the planter; the torque sensor is arranged at the rotational connection between the detection teeth and the cross rod.

5. The double-bud sugarcane uniform planting machine according to claim 4, characterized in that: If it is determined that there is a hard rock, the single-chip microcomputer generates an electrical signal to control the proportional throttle reversing valve, which controls the operation of the hydraulic cylinder, causing the suspension device to lift the planter. The angle sensor installed inside the tractor detects the rotation angle of the support arm to detect the lifting height of the planter, and the height signal is sent to the single-chip microcomputer to form a closed-loop control. After passing the hard rock, the single chip computer transmits a signal to make the planter descend to the original planting height.

6. The double-bud sugarcane uniform planting machine according to claim 1, characterized in that: The invention also includes a speed-dependent sowing mechanism, which includes a ground wheel, a speed measuring gear, a Hall sensor, a hydraulic motor, a proportional amplifier and a proportional throttle valve; There are two sets of speed measuring gears, which are coaxially sleeved on the hub of the ground wheel and the seeding sprocket of the driving mechanism; There are two Hall sensors, which are fixed on one side of the speed measuring gear through sensor brackets respectively, with the heads of the Hall sensors facing the tooth structure of the speed measuring gear; The hydraulic motor is connected to the seeding sprocket of the driving mechanism.

7. The double-bud sugarcane uniform planting machine according to claim 6, characterized in that: The rotation of the ground wheel drives the corresponding speed measuring gear to rotate, and the corresponding Hall sensor will detect the speed signal and transmit it to the single-chip microcomputer. The single-chip microcomputer converts the speed signal of the ground wheel into a voltage signal, controls the opening of the proportional throttle valve, and adjusts the speed of the hydraulic motor. When the hydraulic motor drives the seeding sprocket to rotate, the corresponding speed measuring gear also starts to rotate, and the corresponding Hall sensor detects the speed signal of the sprocket and transmits it to the single-chip microcomputer to determine whether the sprocket speed is within the expected speed range, forming a closed feedback control.

8. The double-bud sugarcane uniform planting machine according to claim 6, characterized in that: Two angular rolling bearings are installed between the wheel hub and the axle of the ground wheel, and the bearing seal inside the wheel hub rotates; the large end cover of the ground wheel is pressed tightly on the shoulder of the ground wheel axle by the support arm, and the large end cover of the ground wheel and the ground wheel axle remain relatively stationary. The rotation of the ground wheel drives the wheel hub and the speed measuring gear to rotate.

9. The double-bud sugarcane uniform planting machine according to claim 6, characterized in that: The ground wheel is connected to the frame via an adjustable suspension mechanism, which includes a support arm and an elastic adjustment structure; The two ends of the support arm are rotatably connected to the ground wheel and the frame respectively; The elastic adjustment structure includes an adjusting rod, a spring, an adjusting fixing sleeve and a locking bolt; one end of the adjusting rod is rotatably connected to the ground wheel, and the adjusting rod is provided with a plurality of elastic adjustment holes distributed along the length direction; the spring is sleeved on the adjusting rod; the adjusting fixing sleeve includes an upper adjusting fixing sleeve and a lower adjusting fixing sleeve, and the upper adjusting fixing sleeve and the lower adjusting fixing sleeve are both sleeved on the adjusting rod; the spring is tightly pressed between the upper adjusting fixing sleeve and the lower adjusting fixing sleeve; the upper adjusting fixing sleeve is rotatably connected to the frame; there are two locking bolts, and the two locking bolts respectively pass through different elastic adjustment holes to limit and fix the upper adjusting fixing sleeve and the lower adjusting fixing sleeve.

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