Rape breeding seeder with adjustable seeding density

Abstract

The utility model relates to the field of agricultural scientific research breeding operation equipment, in particular to a rape breeding seeder with adjustable seeding density. The seeder comprises a rack, a guide wheel, a hopper for containing seeds and a furrow opener are arranged on the rack, a covering device and a press wheel are further arranged on the rack, the bottom of the hopper is connected with a seed falling pipe, and a valve for controlling falling of the seeds is arranged in the seed falling pipe. The seeder further comprises a control device for controlling the valve to be switched between a blocking state and an opening state, the control device comprises a control shaft connected with the valve, a pawl is arranged on the control shaft and matched with ratchet wheels to control the pawl to move, the ratchet wheels are fixed to the rotating shaft, and a plurality of ratchet wheels are arranged along the rotating shaft. And the ratchet numbers of the ratchet wheels on the rotating shaft are different.

Description

Technical Field

[0001] The utility model relates to the field of agricultural scientific research and breeding operation equipment, in particular to a rapeseed breeding seeder with adjustable sowing density. Background Art

[0002] Rapeseed is one of the main oil crops in my country and an important economic crop in my country, with a planting area of ​​about 100 million mu. In recent years, with the advancement of mechanization, rapeseed direct seeding has begun to develop from manual sowing to mechanized sowing. In production, large-scale sowing is generally carried out with a seeder, and the sowing amount per unit area of ​​land is determined in advance according to the sowing time, variety type, etc. However, agricultural scientific research is different from agricultural production operations. For new varieties that have not yet been promoted, multiple groups of tests will be conducted to compare with each other to select the best planting plan and summarize the supporting cultivation technology suitable for the new variety. This includes planting density tests.

[0003] Therefore, in agricultural research and breeding work, it is necessary to set different planting densities in multiple locations and regions, analyze the yield and yield-related traits under different densities, select the most suitable planting density for new varieties, and provide technical support for the promotion of new varieties in the region. In addition, the sowing area of ​​each test group in agricultural research and breeding experiments will not be large. Therefore, mature large-scale sowing equipment is basically not used in scientific research and breeding operations. Small equipment is often used, and even researchers sow manually.

[0004] The small rapeseed planters available on the market now cannot adjust the sowing density. Researchers can only adjust the sowing density by manually adjusting the size of the seed outlet with plugs at the sowing site. First, in breeding experiments, a variety of different sowing densities need to be adjusted independently each time, and sowing uniformity is difficult to ensure; second, sowing density is difficult to quantify accurately; third, the workload of thinning and replanting after sowing is large, which is time-consuming and labor-intensive. Utility Model Content

[0005] In order to solve the existing small rapeseed planter, the sowing density is difficult to adjust. And the use of breeding experiments such as occasions where the sowing density needs to be adjusted multiple times has great limitations.

[0006] The utility model proposes a rapeseed breeding seeder with adjustable sowing density. The seeder comprises a frame, and the frame is provided with guide wheels, a hopper for holding seeds and a furrow opener. The frame is also provided with a soil cover and a pressing wheel. The soil cover is arranged at the rear of the furrow opener, and the pressing wheel is arranged at the rear of the soil cover. The bottom of the hopper is connected with a seed dropping tube, and the seeds in the hopper fall into the rear of the furrow opener along the seed dropping tube.

[0007] A valve for controlling the falling of seeds is arranged in the seed dropping tube, and the valve has a blocking state and an open state. In the blocking state, the valve blocks the seed dropping tube to prevent the seeds from falling, and in the open state, a gap is opened between the valve and the inner wall of the seed dropping tube, and the seeds fall through the gap.

[0008] The seeder also includes a control device for controlling the valve to switch between a blocked state and an open state. The control device includes a control shaft connected to the valve, a pawl is arranged on the control shaft, the pawl cooperates with a ratchet wheel to control the movement of the pawl, the ratchet wheel is fixed on the rotating shaft, and the guide wheel drives the rotating shaft to rotate through a transmission mechanism.

[0009] There are multiple ratchets arranged along the rotating shaft, and the ratchets on the rotating shaft have different numbers of ratchet teeth; the pawl can move along the control shaft, the control shaft is provided with a plurality of pin holes, and the pawl is fixed on the control shaft through a pin shaft.

[0010] In some embodiments, the pin holes correspond to the ratchet wheels one by one, and the pawl provided on any pin hole cooperates with the ratchet wheel corresponding to the pin hole.

[0011] In some embodiments, the control shaft is a spline shaft or a polygonal shaft, and the pawl has a shaft hole that matches the control shaft.

[0012] In some embodiments, the control shaft is connected to a spring, and the elastic force of the spring drives the free end of the pawl to press on the ratchet wheel.

[0013] In some embodiments, sprockets are installed on both the guide wheel and the rotating shaft, and the guide wheel drives the rotating shaft to rotate through a chain.

[0014] In some embodiments, the valve is horizontally placed on the top of the seed drop tube in a flat plate shape; the control shaft penetrates the seed drop tube along the radial direction of the seed drop tube, and the middle part of the valve is fixed on the control shaft.

[0015] In some embodiments, the base circles of the plurality of ratchets are of the same size, and the ratchet teeth of different ratchets have the same height.

[0016] The application of the above technical solution of the utility model to a rapeseed breeding seeder with adjustable sowing density has the following effects:

[0017] The utility model is based on the existing rapeseed seeder, and a valve for controlling the falling of seeds is added, and a control device is arranged to control the opening and closing of the valve.

[0018] The rotation of the guide wheel drives the shaft to rotate. The ratchet is fixed on the shaft. The ratchet cooperates with the pawl. The pawl is connected to the control shaft. The control shaft is connected to and controls the valve. When the pawl is stuck in the ratchet groove of the ratchet, the valve is in a blocking state to block the seeds from falling; when the pawl cooperates with the ratchet, the valve is in an open state, and the seeds fall from the gap between the valve and the wall of the seed drop tube.

[0019] In this way, when the seeder moves forward, the opening and closing of the valve can be controlled by the rotation of the guide wheel, thereby controlling the amount of seeds falling.

[0020] On the other hand, multiple ratchets are arranged along the rotating shaft, and each ratchet has a different number of teeth. At the same time, the pawl can move along the control shaft, and the movement of the pawl can control the pawl to cooperate with different ratchets. The number of ratchet teeth on the ratchet is different, and the opening frequency of the valve can be controlled by using the pawl to cooperate with different ratchets, thereby controlling the sowing amount.

[0021] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a stereogram of one embodiment of the seeder of the utility model;

[0023] Figure 2 yes Figure 1 A magnified view of position A in the middle;

[0024] Figure 3 yes Figure 2 Exploded view of the middle ratchet position;

[0025] Figure 4 yes Figure 1 A three-dimensional view of the other side.

[0026] Description of Reference Numerals

[0027] 1-frame; 2-guide wheel; 3-hopper; 4-ditch opener; 5-soil cover; 6-pressing wheel; 7-control shaft; 8-pawl; 9-ratchet; 10-rotating shaft; 11-chain. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention is described in detail below. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0029] In the present invention, unless otherwise stated, the directional words such as "upper" and "lower" usually refer to the orientation in the assembled state. "Inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the utility model described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] The utility model provides a rapeseed breeding seeder with adjustable sowing density, which includes a frame 1, on which a guide wheel 2, a hopper 3 for holding seeds, and a furrow opener 4 are arranged. The frame 1 is also provided with a soil cover 5 and a pressing wheel 6, wherein the soil cover 5 is arranged behind the furrow opener 4, and the pressing wheel 6 is arranged behind the soil cover 5. The bottom of the hopper 3 is connected to a seed drop tube, and the seeds in the hopper 3 fall into the rear of the furrow opener 4 along the seed drop tube. The frame 1 is also provided with handrails for operators to operate. The guide wheel 2 and the pressing wheel 6 are respectively arranged at the front and rear ends of the frame 1, wherein the guide wheel 2 is the front wheel, and the pressing wheel 6 is the rear wheel. The furrow opener 4 digs a groove for planting seeds on the ground similar to a mattock, and the depth of the furrow opener 4 is adjustable. In fact, the installation height of the furrow opener 4 itself on the frame 1 can be adjusted, or the furrow opener 4 can be fixed on the frame 1, and the height of the front wheel or the rear wheel on the frame 1 can be adjusted, thereby adjusting the height of the frame 1 from the ground; and then controlling the depth of the furrow opener 4 inserted into the ground.

[0032] A valve for controlling the falling of seeds is provided in the seed drop tube, and the valve has a blocking state and an open state. In the blocking state, the valve blocks the seed drop tube to prevent the seeds from falling, and in the open state, a gap is opened between the valve and the inner wall of the seed drop tube, and the seeds fall from the gap. In some embodiments, the valve is provided at the top of the seed drop tube, and the valve does not fully open the seed drop tube after it is opened. Instead, a gap is formed between the edge of the valve and the inner wall of the seed drop tube by the rotation of the valve, and the rapeseed seeds fall from the gap, and finally fall into the groove dug by the furrow opener 4 along the seed drop tube. Then the soil cover 5 will cover the soil on the groove again, and finally the pressure wheel 6 will press over the covered soil to reduce water evaporation.

[0033] The planter also includes a control device for controlling the valve to switch between a blocking state and an open state, the control device includes a control shaft 7 connected to the valve, a pawl 8 is arranged on the control shaft 7, the pawl 8 cooperates with a ratchet 9 to control the movement of the pawl 8, the ratchet 9 is fixed on a rotating shaft 10, and the guide wheel 2 drives the rotating shaft 10 to rotate through a transmission mechanism. The control shaft 7 can rotate with the valve, the shape of the valve fits the inner wall of the seed drop tube, and when the valve rotates, a gap will be formed between the valve and the inner wall of the seed drop tube.

[0034] The ratchet wheels 9 are arranged in plurality along the rotating shaft 10, and the ratchet wheels 9 on the rotating shaft 10 have different numbers of ratchet teeth; the pawl 8 can move along the control shaft 7, and the control shaft 7 has a plurality of pin holes, and the pawl 8 is fixed to the control shaft 7 through a pin shaft, wherein the pin shaft is preferably a safety pin.

[0035] The number of revolutions of the rotating shaft 10 is in a fixed ratio to the number of revolutions of the guide wheel, and the number of revolutions of the guide wheel is proportional to the distance the entire seeder moves. Thus, a fixed proportional relationship is established between the moving distance of the seeder and the number of revolutions of the rotating shaft 10. Multiple ratchets 9 are mounted on the same rotating shaft 10. The ratchet teeth of the ratchet 9 are different, so that the pawl 8 can cooperate with different ratchets 9. The rotating shaft 10 rotates one circle, and the valve opens at different times due to the different number of ratchet teeth. The sowing density is also different.

[0036] The pin holes correspond to the ratchet wheels 9 one by one, and the pawl 8 arranged on any pin hole cooperates with the ratchet wheel 9 corresponding to the pin hole. In addition, the thickness of the pawl 8 is smaller than the thickness of the ratchet wheel 9, or a gap is set between the ratchet wheels 9. Thus, after the pawl 8 is installed on any pin hole of the control shaft 7 through the safety pin, it can only cooperate with the ratchet wheel 9 corresponding to the pin hole, and will not be affected by the ratchet teeth of the adjacent ratchet wheels 9.

[0037] The control shaft 7 is a spline shaft or a polygonal shaft, and the pawl 8 is provided with a shaft hole matched with the control shaft 7. In this way, the pawl 8 can slide along the axial direction of the control shaft 7 without affecting the pawl 8 driving the control shaft 7 to rotate.

[0038] The control shaft 7 is connected to a spring, and the elastic force of the spring drives the free end of the pawl 8 to press on the ratchet 9. The spring resets the valve on the one hand, and keeps the pawl 8 and the ratchet 9 always matched on the other hand.

[0039] In one embodiment, sprockets are installed on both the guide wheel 2 and the rotating shaft 10 , and the guide wheel 2 drives the rotating shaft 10 to rotate through the chain 11 .

[0040] The valve is flat and horizontally placed on the top of the seed drop tube; the control shaft 7 penetrates the seed drop tube along the radial direction of the seed drop tube, and the middle part of the valve is fixed on the control shaft 7. When the control shaft 7 rotates, the valve deflects.

[0041] The base circles of the multiple ratchets 9 are the same in size, and the ratchet teeth of different ratchets 9 have the same height. The same base circles of the ratchets 9 can ensure that when the pawl 8 cooperates with the tooth root of any ratchet 9, the valve is in a closed state.

[0042] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0043] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0044] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A rapeseed breeding seeder with adjustable sowing density, characterized in that: The seed drill comprises a frame (1), the frame (1) is provided with a guide wheel (2), a hopper (3) for holding seeds, and a furrow opener (4), the frame (1) is also provided with a soil cover (5) and a pressing wheel (6), the soil cover (5) is arranged behind the furrow opener (4), the pressing wheel (6) is arranged behind the soil cover (5), the bottom of the hopper (3) is connected to a seed drop tube, and the seeds in the hopper (3) fall into the rear of the furrow opener (4) along the seed drop tube; The seed dropping tube is provided with a valve for controlling the seeds to fall, and the valve has a blocking state and an open state. In the blocking state, the valve blocks the seed dropping tube to prevent the seeds from falling, and in the open state, a gap is opened between the valve and the inner wall of the seed dropping tube, and the seeds fall through the gap. The planter further comprises a control device for controlling the valve to switch between a blocking state and an open state, the control device comprising a control shaft (7) connected to the valve, a ratchet (8) being arranged on the control shaft (7), the ratchet (8) cooperating with a ratchet wheel (9) to control the movement of the ratchet (8), the ratchet wheel (9) being fixed on a rotating shaft (10), and the guide wheel (2) driving the rotating shaft (10) to rotate through a transmission mechanism; A plurality of ratchet wheels (9) are arranged along the rotating shaft (10), and the ratchet wheels (9) on the rotating shaft (10) have different numbers of ratchet teeth; the ratchet pawl (8) can move along the control shaft (7), the control shaft (7) is provided with a plurality of pin holes, and the ratchet pawl (8) is fixed on the control shaft (7) via a pin shaft.

2. The rapeseed breeding seeder with adjustable sowing density according to claim 1, characterized in that: The pin holes correspond to the ratchet wheels (9) one by one, and the ratchet pawl (8) arranged on any pin hole cooperates with the ratchet wheel (9) corresponding to the pin hole.

3. The rapeseed breeding seeder with adjustable sowing density according to claim 1, characterized in that: The control shaft (7) is a spline shaft or a polygonal shaft, and the pawl (8) is provided with a shaft hole matching the control shaft (7).

4. The rapeseed breeding seeder with adjustable sowing density according to claim 1, characterized in that: The control shaft (7) is connected to a spring, and the elastic force of the spring drives the free end of the ratchet pawl (8) to press onto the ratchet wheel (9).

5. The rapeseed breeding seeder with adjustable sowing density according to claim 1, characterized in that: Sprocket wheels are installed on the guide wheel (2) and the rotating shaft (10), and the guide wheel (2) drives the rotating shaft (10) to rotate through a chain (11).

6. The rapeseed breeding seeder with adjustable sowing density according to claim 1, characterized in that: The valve is in the shape of a flat plate and is horizontally placed on the top of the seed drop tube; the control shaft (7) penetrates the seed drop tube in the radial direction of the seed drop tube, and the middle part of the valve is fixed on the control shaft (7).

7. The rapeseed breeding seeder with adjustable sowing density according to claim 1, characterized in that: The base circles of the plurality of ratchets (9) are of the same size, and the ratchet teeth of different ratchets (9) have the same height.

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