Precise seed sowing device for wheat breeding

Abstract

The invention relates to the technical field of seed sowing devices, and discloses a wheat breeding precision seed sowing device which comprises an assembly supporting plate, a fixed connecting support is fixed to the bottom of the assembly supporting plate, and an installation connecting support is fixed to one side of the assembly supporting plate; the device is provided with a seed metering mechanism, a wheat seed quantitative discharging shell controls wheat seeds to fall down quantitatively, a seed metering fixed head and a seed metering movable head are close to the ground at the moment, an opening between the seed metering fixed head and the seed metering movable head allows the wheat seeds to fall down, and the situation that the seeding position is inclined due to wind blowing and the like is reduced; the precision seed metering of wheat breeding is facilitated; the device is provided with an auxiliary seed metering mechanism, when the wheat seed quantitative discharging shell conducts quantitative discharging of wheat seeds, an elastic rubber pad can slightly impact the outer side of the wheat seed quantitative discharging shell for multiple times, the wheat seeds in the wheat seed quantitative discharging shell are assisted to fall down normally, and precise seed metering of wheat breeding is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of seed metering devices, in particular to a precision seed metering device for wheat breeding. Background Art

[0002] Wheat is an annual or biennial herbaceous plant of the Gramineae family and the genus Triticeae. The culm is erect, clumped, and can reach 100 cm in height. The leaf sheath is loosely phimotic, the ligule is membranous, and the leaves are long lanceolate. The spike inflorescence is erect, the spikelets contain many small flowers, the lemma is oval, the lemma is oblong-lanceolate, and the palea and lemma are almost the same length. The flowering and fruiting period is from May to July. The soil layer is deep and the structure is good. The ploughing layer is deep, which is conducive to water storage and fertilizer conservation and promotes root development. Soil structure refers to the composition ratio of solids (organic and inorganic), liquids, and gases. It is closely related to soil moisture, air, temperature, and nutrients. For example, sandy soil and heavy clay have poor structures and are difficult to form high yields. The average daily temperature during the suitable period for winter varieties is 16-18℃, 14-16℃ for semi-winter varieties, and 12-14℃ for spring varieties. The temperature is affected by the geographical latitude and altitude, that is, the higher the latitude and altitude, the lower the temperature, and the earlier the sowing period can be. Wheat is a long-day crop. If the sunlight conditions are insufficient, it cannot pass the light stage, cannot ear and bear fruit. The light stage of wheat is after the vernalization stage. When the wheat seeds germinate, the radicle sheath breaks through the cortex and stretches to 1 mm. The main radicle extends from the radicle sheath, and then the first and second pairs of lateral roots grow successively at the base of the hypocotyl. Sometimes even the third pair of lateral roots appear. The lateral radicle first grows horizontally and is at a 60° angle to the vertical line. When it grows to 5-30 cm, it grows downward, and stops growing after the first true leaf is pulled out. Because these roots grow directly from the embryo, they are also called radicles, seed roots, and primary roots. Generally, there are 3-5 roots, and as many as 7. In the early stage of wheat growth, it mainly relies on seed endosperm for nutrition. The primary seed root is thick and soft, with a relatively consistent diameter from top to bottom. When it grows to 10-15 cm long, it begins to have a first-level branch root. In the subsequent growth, a second-level branch root can grow from the first-level branch root. By analogy, there are four levels at most. When wheat forms tiller nodes and begins to tiller, roots can grow on the stem nodes under suitable conditions. These roots are called secondary roots. Because they originate from stem nodes, they are also called nodal roots or secondary adventitious roots. Secondary roots are slightly thicker than seed roots, unbranched at first, and almost all covered with root hairs. As the roots grow, except near the top, the root hairs disappear, the root diameter changes from thick to thin, and multi-level branch roots occur. In the process of wheat breeding and planting, precision seed metering devices need to be used.

[0003] However, in the process of using the existing precision seed metering device, a controller is generally used to control the amount of seeds dropped during the sowing process to achieve the purpose of precision seeding. However, in actual use, due to the high height of some seeds when they are discharged, it is easy for the sowing position to be skewed due to wind and other reasons. Therefore, those skilled in the art provide a wheat breeding precision seed metering device to solve the problems raised in the above background technology. Summary of the invention

[0004] The object of the present invention is to provide a precision seed metering device for wheat breeding to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A wheat breeding precision seed metering device, comprising an assembly support plate, a fixed connection bracket is fixed to the bottom of the assembly support plate, a mounting connection bracket is fixed to one side of the assembly support plate, a mounting connection hole is opened inside the mounting connection bracket, a support connection shell is fixed to the top of the assembly support plate, a feed hopper body is fixed to the top of the support connection shell, a feed hopper shielding plate is rotatably connected to the top of the feed hopper body through a rotating shaft, a seeding mechanism is connected to the bottom of the support connection shell, and an auxiliary seeding mechanism is arranged on the outside of the seeding mechanism;

[0007] The seed-discharging mechanism includes a motor support plate, a first DC servo motor is fixed on the top of the motor support plate, a first gear is fixed on the outer side of the output shaft of the first DC servo motor, a second gear is meshed on the outer side of the first gear, a third gear is meshed on the outer side of the second gear, a transmission connecting shaft passing through the other side of the third gear is fixed on one side of the third gear, the transmission connecting shaft is connected to the feed hopper body through a bearing, a rotating metal frame is fixed on the outer side of the transmission connecting shaft, a rotating metal column is fixed on the outer side of the rotating metal frame, and the outer side of the rotating metal column is matched and installed There is a movable mounting frame, one end of the movable mounting frame is rotatably connected to a lifting limit frame, the outer movable sleeve of the lifting limit frame is connected to a lifting movable sleeve, a cast iron support plate is fixed to the bottom of the assembly support plate, a wear-resistant connecting pad is fixed to one side of the cast iron support plate, a wheat seed quantitative feeding shell is fixed to the bottom of the feed hopper body, a guide connecting groove is provided on the outer side of the wheat seed quantitative feeding shell, a limiting bracket is fixed to the outer side of the lifting movable sleeve, a seed discharging fixed head is fixed to the outer side of the lifting movable sleeve, and the outer side of the lifting movable sleeve is rotatably connected to the seed discharging movable head through a rotating shaft.

[0008] As a further solution of the present invention: the motor support plate and the assembly support plate are fixedly connected, and the transmission connecting shaft and the feed hopper body are rotationally connected via a rotating shaft.

[0009] As a further solution of the present invention: the size of the guide connection groove is adapted to the size of the lifting limit frame, and the feed hopper body and the assembly support plate are fixedly connected by bolts.

[0010] As a further solution of the present invention: a through slot is provided inside the assembly support plate, and the size of the through slot is adapted to the size of the movable mounting frame.

[0011] As a further solution of the present invention: one end of the lifting limit frame extends to the inside of the guide connection groove, and the lifting movable sleeve is movably sleeved on the outside of the wheat seed quantitative feeding shell.

[0012] As a further solution of the present invention: the auxiliary seed-discharging mechanism includes an outer connecting shell, a supporting cast iron plate is fixed to the inner wall of one side of the outer connecting shell, a second DC servo motor is fixed to one side of the supporting cast iron plate, an eccentric wheel is fixed to the outer side of the output shaft of the second DC servo motor, a supporting mounting plate is fixed to the inner bottom wall of the outer connecting shell, a return spring is connected to one side of the supporting mounting plate, one end of the return spring is connected to a supporting mounting pad, and a supporting movable bracket is fixed to one side of the supporting mounting pad.

[0013] As a further solution of the present invention: a supporting wear-resistant plate is fixed at one end of the supporting movable bracket, a movable limiting bracket is fixed on the side of the supporting mounting pad away from the supporting movable bracket, a cast iron movable bracket is fixed at one end of the movable limiting bracket, a guide mounting bracket is installed on the top of the cast iron movable bracket, and a guide sliding block is fixed on the top of the guide mounting bracket.

[0014] As a further solution of the present invention: a limiting movable rod is fixed on the outside of the cast iron movable frame, an elastic rubber pad is fixed to one end of the limiting movable rod, a reinforced cast iron frame is fixed to the outside of the outer connecting shell, and a reinforced bracket is fixed to one side of the reinforced cast iron frame.

[0015] As a further solution of the present invention: the reinforcement bracket is embedded and fixed inside the wheat seed quantitative feeding shell, and a through hole is opened inside the support mounting plate to accommodate the movement of the movable limiting bracket.

[0016] As a further solution of the present invention: a groove is provided on the outer side of the lifting sleeve, and the size of the groove is adapted to the size of the outer connecting shell.

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

[0018] 1. The device is provided with a seeding mechanism. When sowing wheat breeding, firstly, the fixed connection bracket is fixed to the outside of the corresponding driving equipment such as a tractor by bolts, and the bottom of the assembly support plate is stably supported by the fixed connection bracket, and then the feed hopper shielding plate on the top of the feed hopper body is opened, and then the wheat seeds are placed in the feed hopper body. After the wheat seeds enter the wheat seed quantitative feeding shell, as the seeding movable head moves downward, the gap between the seeding movable head and the seeding fixed head expands. At this time, the wheat seed quantitative feeding shell controls the wheat seeds to fall quantitatively. The seeding fixed head and the seeding movable head are close to the ground at this time, and the opening between the seeding fixed head and the seeding movable head accommodates the wheat seeds to fall, which reduces the situation where the sowing position is skewed due to wind and other reasons, and is conducive to the precise seeding of wheat breeding;

[0019] 2. The device is provided with an auxiliary seeding mechanism. When the wheat seed quantitative feeding shell carries out quantitative feeding of wheat seeds, the elastic rubber pad can lightly hit the outer side of the wheat seed quantitative feeding shell for multiple times, thereby assisting the wheat seeds in the wheat seed quantitative feeding shell to fall normally, which is beneficial to the precise seeding of wheat breeding. Moreover, when the lifting sleeve moves in the vertical direction, a groove matching the size of the outer connecting shell is opened on the outer side of the lifting sleeve to avoid the situation where the outer connecting shell affects the normal vertical movement of the lifting sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a stereoscopic diagram of a precision seed meter for wheat breeding;

[0021] Figure 2 It is a front view of a precision seed meter for wheat breeding;

[0022] Figure 3 This is a schematic diagram of the outer structure of a precision seed meter for wheat breeding;

[0023] Figure 4 It is a side view of a precision seed meter for wheat breeding;

[0024] Figure 5 It is a schematic diagram of the other side structure of a wheat breeding precision seed metering device;

[0025] Figure 6 It is a front view of a seed-metering mechanism in a wheat breeding precision seed-metering device;

[0026] Figure 7 It is a stereoscopic diagram of a seed-metering mechanism in a precision seed-metering device for wheat breeding;

[0027] Figure 8 It is a schematic diagram of the outer structure of a seed-metering mechanism in a precision seed-metering device for wheat breeding;

[0028] Fig. 9It is a schematic diagram of the internal structure of a seed-metering mechanism in a wheat breeding precision seed-metering device;

[0029] Fig.10 It is a front view of the internal structure of a seed-metering mechanism in a wheat breeding precision seed-metering device;

[0030] Fig.11 It is a schematic diagram of the outer structure of a movable seeding head in a wheat breeding precision seeding device;

[0031] Fig.12 It is a schematic diagram of the outer structure of an auxiliary seed-metering mechanism in a wheat breeding precision seed-metering device;

[0032] Fig.13 This is a schematic diagram of the internal structure of an auxiliary seed-metering mechanism in a precision seed-metering device for wheat breeding.

[0033] In the figure: 1. Assemble support plate; 2. Fix connecting bracket; 3. Install connecting bracket; 4. Install connecting hole; 5. Support connecting shell; 6. Feed hopper body; 7. Feed hopper shielding plate; 8. Seed discharging mechanism; 81. Motor support plate; 82. First DC servo motor; 83. First gear; 84. Second gear; 85. Third gear; 86. Transmission connecting shaft; 87. Rotating metal frame; 88. Rotating metal column; 89. Movable mounting frame; 810. Lifting limit frame; 811. Lifting movable sleeve; 812. Cast iron support plate; 813. Wear-resistant connecting pad; 814. Wheat seed quantitative feeding shell; 815 , guide connecting groove; 816, limit bracket; 817, seeding fixed head; 818, seeding movable head; 9, auxiliary seeding mechanism; 91, outer connecting shell; 92, support cast iron plate; 93, second DC servo motor; 94, eccentric wheel; 95, support mounting plate; 96, reset spring; 97, support mounting pad; 98, support movable bracket; 99, support wear-resistant plate; 910, movable limit bracket; 911, cast iron movable frame; 912, guide mounting frame; 913, guide sliding block; 914, limit moving rod; 915, elastic rubber pad; 916, reinforced cast iron frame; 917, reinforced bracket. DETAILED DESCRIPTION

[0034] 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.

[0035] See also Figure 1-13In an embodiment of the present invention, a wheat breeding precision seed meter includes an assembly support plate 1, a fixed connection bracket 2 is fixed to the bottom of the assembly support plate 1, a mounting connection bracket 3 is fixed to one side of the assembly support plate 1, a mounting connection hole 4 is opened inside the mounting connection bracket 3, a support connection shell 5 is fixed to the top of the assembly support plate 1, a feed hopper body 6 is fixed to the top of the support connection shell 5, a feed hopper shielding plate 7 is rotatably connected to the top of the feed hopper body 6 through a rotating shaft, a seeding mechanism 8 is connected to the bottom of the support connection shell 5, and an auxiliary seeding mechanism 9 is arranged on the outside of the seeding mechanism 8;

[0036] The seeding mechanism 8 includes a motor support plate 81, a first DC servo motor 82 is fixed on the top of the motor support plate 81, a first gear 83 is fixed on the outer side of the output shaft of the first DC servo motor 82, a second gear 84 is meshed on the outer side of the first gear 83, a third gear 85 is meshed on the outer side of the second gear 84, a transmission connecting shaft 86 is fixed on one side of the third gear 85 and passes through the other side thereof, the transmission connecting shaft 86 is connected to the feed hopper body 6 through a bearing, a rotating metal frame 87 is fixed on the outer side of the transmission connecting shaft 86, the motor support plate 81 and the assembly support plate 1 are fixedly connected, the transmission connecting shaft 86 and the feed hopper body 6 are rotationally connected through a rotating shaft, a rotating metal column 88 is fixed on the outer side of the rotating metal frame 87, and the rotating metal column A movable mounting frame 89 is installed on the outer side of 88, and one end of the movable mounting frame 89 is rotatably connected to a lifting limit frame 810. A through groove is opened inside the assembly support plate 1, and the size of the through groove is adapted to the size of the movable mounting frame 89. The size of the guide connection groove 815 is adapted to the size of the lifting limit frame 810. The feed hopper body 6 and the assembly support plate 1 are fixedly connected by bolts. The outer side of the lifting limit frame 810 is movably sleeved with a lifting movable sleeve 811. A cast iron support plate 812 is fixed to the bottom of the assembly support plate 1, and a wear-resistant connecting pad 813 is fixed to one side of the cast iron support plate 812. A wheat seed quantitative feeding shell 814 is fixed to the bottom of the feed hopper body 6, and one end of the lifting limit frame 810 extends to the inside of the guide connection groove 815. The lifting sleeve 811 is movably sleeved on the outer side of the wheat seed quantitative feeding shell 814, and a guide connection groove 815 is provided on the outer side of the wheat seed quantitative feeding shell 814. A limited bracket 816 is fixed on the outer side of the lifting sleeve 811, and a seeding fixed head 817 is fixed on the outer side of the lifting sleeve 811. The outer side of the lifting sleeve 811 is rotatably connected with a seeding movable head 818 through a rotating shaft. When sowing wheat breeding, first fix the fixed connection bracket 2 to the outer side of the corresponding driving equipment such as a tractor by bolts, and stably support the bottom of the assembly support plate 1 by the fixed connection bracket 2, then open the feed hopper baffle 7 on the top of the feed hopper main body 6, and then place the wheat seeds in the feed hopper main body 6, and the wheat seeds enter the wheat seed quantitative feeding shell 814. After the material shell 814 is unloaded, as the driving device drives the assembly support plate 1 to move, the first DC servo motor 82 can be started, and the first gear 83 and the second gear 84 can be driven to rotate through the output shaft of the first DC servo motor 82, and the third gear 85 can be driven to rotate. When the third gear 85 rotates, the rotating metal frame 87 can be driven to rotate through the transmission connection shaft 86, and the rotating metal column 88 on the outside of the rotating metal frame 87 can move together with the rotating metal frame 87. The rotating metal column 88 drives one end of the movable mounting frame 89 to move, and the lifting limit frame 810 at the other end of the movable mounting frame 89 slides in the guide connection groove 815 provided in the wheat seed quantitative unloading shell 814, so that the lifting limit frame 810 can move in the vertical direction.When the lifting limit frame 810 moves in the vertical direction, the lifting movable sleeve 811 can move in the vertical direction at the same time. When the seeding movable head 818 at the bottom of the outer side of the lifting movable sleeve 811 moves downward, the wear-resistant connecting pad 813 on the outer side of the cast iron support plate 812 can be movably inserted into the gap between the seeding fixed head 817 and the seeding movable head 818. As the seeding movable head 818 moves downward, the gap between the seeding movable head 818 and the seeding fixed head 817 expands. At this time, the quantitative feeding shell 814 of the wheat seeds controls the quantitative falling of the wheat seeds. The seeding fixed head 817 and the seeding movable head 818 are close to the ground at this time, and the opening between the seeding fixed head 817 and the seeding movable head 818 accommodates the falling of the wheat seeds, which reduces the situation where the sowing position is skewed due to wind and other reasons, and is conducive to the precise seeding of wheat breeding.

[0037] As an embodiment of the present invention, the auxiliary seed-discharging mechanism 9 includes an outer connecting shell 91, a supporting cast iron plate 92 is fixed to the inner wall of one side of the outer connecting shell 91, a groove is opened on the outer side of the lifting movable sleeve 811, and the size of the groove is adapted to the size of the outer connecting shell 91, a second DC servo motor 93 is fixed to one side of the supporting cast iron plate 92, an eccentric wheel 94 is fixed to the outer side of the output shaft of the second DC servo motor 93, a supporting mounting plate 95 is fixed to the inner bottom wall of the outer connecting shell 91, a return spring 96 is connected to one side of the supporting mounting plate 95, one end of the return spring 96 is connected to a supporting mounting pad 97, a supporting movable bracket 98 is fixed to one side of the supporting mounting pad 97, and the supporting movable bracket 98 is fixed to the supporting movable bracket 98. A support wear plate 99 is fixed to one end of 8, a movable limit bracket 910 is fixed to the side of the support mounting pad 97 away from the support movable bracket 98, a cast iron movable bracket 911 is fixed to one end of the movable limit bracket 910, a reinforcement bracket 917 is embedded and fixed inside the wheat seed quantitative feeding shell 814, a through hole for accommodating the movement of the movable limit bracket 910 is opened inside the support mounting plate 95, a guide mounting bracket 912 is installed on the top of the cast iron movable bracket 911, a guide sliding block 913 is fixed to the top of the guide mounting bracket 912, a limit movable rod 914 is fixed to the outside of the cast iron movable bracket 911, an elastic rubber pad 915 is fixed to one end of the limit movable rod 914, and a reinforcement bracket 917 is embedded and fixed to the outside of the outer connecting shell 91 A reinforced cast iron frame 916 is provided, and a reinforced bracket 917 is fixed on one side of the reinforced cast iron frame 916. When the wheat seed quantitative feeding shell 814 is used to quantitatively feed wheat seeds, sometimes the wheat seeds will remain on the inner wall of the wheat seed quantitative feeding shell 814. At this time, the second DC servo motor 93 can be started to drive the eccentric wheel 94 to rotate with the output shaft of the second DC servo motor 93, and the eccentric wheel 94 can push the support wear-resistant plate 99 to move, so that the support wear-resistant plate 99 drives the support movable bracket 98 and the support mounting pad 97 to move, and the support mounting pad 97 can squeeze one end of the reset spring 96, and the movable limit bracket 910 can also drive the cast iron movable frame 911 and the limit movable rod 914 to move, so that the spring The elastic rubber pad 915 slightly hits the outer side of the wheat seed quantitative feeding shell 814, and then the reset spring 96 on one side of the support mounting plate 95 pushes the support mounting pad 97 to reset, so that the limit moving rod 914 and the elastic rubber pad 915 can be reset, so that the elastic rubber pad 915 can slightly hit the outer side of the wheat seed quantitative feeding shell 814 for many times, and assist the wheat seeds in the wheat seed quantitative feeding shell 814 to fall normally, which is beneficial to the precise seeding of wheat breeding, and when the lifting sleeve 811 moves in the vertical direction, a groove matching the size of the outer connecting shell 91 is opened on the outer side of the lifting sleeve 811 to avoid the situation where the outer connecting shell 91 affects the normal vertical movement of the lifting sleeve 811.

[0038] The working principle of the present invention is as follows: the device is provided with a seeding mechanism 8. When sowing wheat, the fixed connecting bracket 2 is first fixed to the outside of the corresponding driving device such as a tractor by bolts, and the bottom of the assembly support plate 1 is stably supported by the fixed connecting bracket 2. Then, the feed hopper baffle 7 on the top of the feed hopper body 6 is opened, and then the wheat seeds are placed in the feed hopper body 6. After the wheat seeds enter the wheat seed quantitative feeding shell 814, as the driving device drives the assembly support plate 1 to move, the first DC servo motor 82 can be started, and the first gear 83 and the second gear 84 are driven to rotate through the output shaft of the first DC servo motor 82, and the third gear 85 can be rotated. When the third gear 85 rotates, the rotating metal frame 87 can be driven to rotate through the transmission connecting shaft 86. The rotating metal column 88 on the outside of the rotating metal frame 87 can move together with the rotating metal frame 87, so that the rotating metal column 88 drives one end of the movable mounting frame 89 to move, and the other end of the movable mounting frame 89 can be driven to rotate. The lifting limit frame 810 slides in the guide connection groove 815 provided in the wheat seed quantitative feeding shell 814, so that the lifting limit frame 810 can move in the vertical direction. When the lifting limit frame 810 moves in the vertical direction, the lifting movable sleeve 811 can move in the vertical direction at the same time. When the seeding movable head 818 at the bottom of the outer side of the lifting movable sleeve 811 moves downward, the wear-resistant connecting pad 813 on the outer side of the cast iron support plate 812 can be movably inserted into the seeding fixed head 817 and the seeding movable head 818. In the gap, as the seeding movable head 818 moves downward, the gap between the seeding movable head 818 and the seeding fixed head 817 expands, and at this time the wheat seed quantitative feeding shell 814 controls the wheat seeds to fall quantitatively. The seeding fixed head 817 and the seeding movable head 818 are closer to the ground at this time, and the opening between the seeding fixed head 817 and the seeding movable head 818 accommodates the wheat seeds to fall, which reduces the situation where the sowing position is skewed due to wind and other reasons, and is conducive to the precise seeding of wheat breeding;The device is provided with an auxiliary seeding mechanism 9. When the wheat seed quantitative feeding shell 814 is used for quantitative feeding of wheat seeds, sometimes the wheat seeds will remain on the inner wall of the wheat seed quantitative feeding shell 814. At this time, the second DC servo motor 93 can be started to drive the eccentric wheel 94 to rotate with the output shaft of the second DC servo motor 93, and the eccentric wheel 94 can push the support wear-resistant plate 99 to move, so that the support wear-resistant plate 99 drives the support movable bracket 98 and the support mounting pad 97 to move, and the support mounting pad 97 can squeeze one end of the reset spring 96, and the movable limit bracket 910 can also drive the cast iron movable bracket 911 and the limit movable rod 914 to move, so that the elastic rubber pad 915 can be slightly The outer side of the wheat seed quantitative feeding shell 814 is hit, and then the reset spring 96 on one side of the support mounting plate 95 pushes the support mounting pad 97 to reset, so that the limit moving rod 914 and the elastic rubber pad 915 can be reset, so that the elastic rubber pad 915 can slightly hit the outer side of the wheat seed quantitative feeding shell 814 for many times, and assist the wheat seeds in the wheat seed quantitative feeding shell 814 to fall normally, which is conducive to the precise seeding of wheat breeding. In addition, when the lifting sleeve 811 moves in the vertical direction, a groove matching the size of the outer connecting shell 91 is opened on the outer side of the lifting sleeve 811 to avoid the situation where the outer connecting shell 91 affects the normal vertical movement of the lifting sleeve 811. ;

[0039] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wheat breeding precision seed metering device, comprising an assembly support plate (1), characterized in that: A fixed connection bracket (2) is fixed to the bottom of the assembly support plate (1), a mounting connection bracket (3) is fixed to one side of the assembly support plate (1), a mounting connection hole (4) is provided inside the mounting connection bracket (3), a support connection shell (5) is fixed to the top of the assembly support plate (1), a feed hopper body (6) is fixed to the top of the support connection shell (5), a feed hopper shielding plate (7) is rotatably connected to the top of the feed hopper body (6) via a rotating shaft, a seeding mechanism (8) is connected to the bottom of the support connection shell (5), and an auxiliary seeding mechanism (9) is provided on the outside of the seeding mechanism (8); The seed-discharging mechanism (8) comprises a motor support plate (81), a first DC servo motor (82) is fixed on the top of the motor support plate (81), a first gear (83) is fixed on the outer side of the output shaft of the first DC servo motor (82), a second gear (84) is meshed on the outer side of the first gear (83), a third gear (85) is meshed on the outer side of the second gear (84), a transmission connecting shaft (86) passing through the other side of the third gear (85) is fixed on one side of the third gear (85), the transmission connecting shaft (86) is connected to the feed hopper body (6) via a bearing, a rotating metal frame (87) is fixed on the outer side of the transmission connecting shaft (86), a rotating metal column (88) is fixed on the outer side of the rotating metal frame (87), and a movable mounting frame (88) is mounted on the outer side of the rotating metal column (88) 89), one end of the movable mounting frame (89) is rotatably connected to a lifting limit frame (810), the outer side of the lifting limit frame (810) is movably sleeved with a lifting movable sleeve (811), a cast iron support plate (812) is fixed to the bottom of the assembly support plate (1), a wear-resistant connecting pad (813) is fixed to one side of the cast iron support plate (812), a wheat seed quantitative feeding shell (814) is fixed to the bottom of the feed hopper body (6), a guide connecting groove (815) is provided on the outer side of the wheat seed quantitative feeding shell (814), a limiting bracket (816) is fixed to the outer side of the lifting movable sleeve (811), a seed discharging fixed head (817) is fixed to the outer side of the lifting movable sleeve (811), and the outer side of the lifting movable sleeve (811) is rotatably connected to a seed discharging movable head (818) via a rotating shaft.

2. A wheat breeding precision seed metering device according to claim 1, characterized in that: The motor support plate (81) and the assembly support plate (1) are fixedly connected, and the transmission connection shaft (86) and the feed hopper body (6) are rotationally connected via a rotating shaft.

3. The wheat breeding precision seed metering device according to claim 1, characterized in that: The size of the guide connection groove (815) is adapted to the size of the lifting limit frame (810), and the feed hopper body (6) and the assembly support plate (1) are fixedly connected by bolts.

4. The wheat breeding precision seed metering device according to claim 1, characterized in that: A through slot is provided inside the assembly support plate (1), and the size of the through slot matches the size of the movable mounting frame (89).

5. The wheat breeding precision seed metering device according to claim 1, characterized in that: One end of the lifting limit frame (810) extends to the inside of the guide connection groove (815), and the lifting movable sleeve (811) is movably sleeved on the outside of the wheat seed quantitative feeding shell (814).

6. A wheat breeding precision seed metering device according to claim 1, characterized in that: The auxiliary seed-discharging mechanism (9) comprises an outer connecting shell (91), a supporting cast iron plate (92) is fixed to an inner wall of one side of the outer connecting shell (91), a second DC servo motor (93) is fixed to one side of the supporting cast iron plate (92), an eccentric wheel (94) is fixed to the outer side of the output shaft of the second DC servo motor (93), a supporting mounting plate (95) is fixed to the inner bottom wall of the outer connecting shell (91), a return spring (96) is connected to one side of the supporting mounting plate (95), one end of the return spring (96) is connected to a supporting mounting pad (97), and a supporting movable bracket (98) is fixed to one side of the supporting mounting pad (97).

7. A wheat breeding precision seed metering device according to claim 6, characterized in that: A support wear-resistant plate (99) is fixed at one end of the support movable bracket (98), a movable limit bracket (910) is fixed on the side of the support mounting pad (97) away from the support movable bracket (98), a cast iron movable bracket (911) is fixed at one end of the movable limit bracket (910), a guide mounting bracket (912) is installed on the top of the cast iron movable bracket (911), and a guide sliding block (913) is fixed on the top of the guide mounting bracket (912).

8. A wheat breeding precision seed metering device according to claim 7, characterized in that: A limit moving rod (914) is fixed on the outside of the cast iron moving frame (911), an elastic rubber pad (915) is fixed to one end of the limit moving rod (914), a reinforced cast iron frame (916) is fixed to the outside of the outer connecting shell (91), and a reinforced bracket (917) is fixed to one side of the reinforced cast iron frame (916).

9. A wheat breeding precision seed metering device according to claim 8, characterized in that: The reinforcement bracket (917) is embedded and fixed inside the wheat seed quantitative feeding shell (814), and a through hole for accommodating the movement of the movable limiting bracket (910) is provided inside the support mounting plate (95).

10. The wheat breeding precision seed metering device according to claim 8, characterized in that: The outer side of the lifting movable sleeve (811) is provided with a groove, and the size of the groove is adapted to the size of the outer connecting shell (91).

Images