Seed sowing device for double broad beans

Abstract

The utility model relates to a seed-metering device for double broad beans, which belongs to the field of agricultural machinery and comprises a rack, and the rack is provided with a seed box and a closed seed guide groove; the plurality of chain seed metering assemblies are arranged on the rack in parallel at intervals, the power input shaft is jointly connected with the plurality of chain seed metering assemblies, the power input shaft drives the plurality of chain seed metering assemblies to work through external input power, the seed taking spoon cavity is arranged to be in a broad bean shape, and the seed taking spoon cavity is arranged to be in a broad bean shape. The broad bean seed sowing device is high in applicability to broad bean seeds, basically ensures that the broad beans can enter the seed taking spoon to form double seeds, is high in double-seed rate, can prevent the broad beans in the seed taking spoon from being thrown out by arranging the seed sowing device structure to be matched with the seed guide groove, can be limited in the seed guide groove due to the existence of the seed guide groove even if the broad beans are thrown out, and finally falls into a pit along the seed guide groove. It can still be guaranteed that double beans exist in the pit.

Description

Technical Field

[0001] The utility model relates to the field of agricultural planting machinery, in particular to a double-grain broad bean seeding device. Background Art

[0002] Broad bean - a common leguminous crop, named after its silkworm-like shape, has great edible and medicinal value, and can invigorate qi and strengthen the spleen. With the development of agricultural mechanization, the current method of planting broad beans is also mainly mechanized. The current planting machinery mainly includes pneumatic seeders and mechanical seeders. my country has complex terrain, small and scattered plots, and pneumatic seeders have problems such as high energy consumption, high cost, and difficulty in ensuring air pressure at the head of the field. It is not suitable for small plots, and the pneumatic seeder has poor adsorption effect. In many cases, broad beans are lacking seedlings. The mechanical seeder has a simple structure and low cost, which is suitable for precision sowing of broad beans on small plots. The existing mechanical seeders mainly include the socket wheel seeder disclosed in patent 202111287439, and the outer groove wheel seeder on the market. Both of these seeders are difficult to stably achieve double-grain sowing. Relying on many years of experience and practice in related industries, the inventor has designed a double-grain broad bean seeder to overcome the defects of the prior art. Utility Model Content

[0003] Existing mechanical seeding devices, including socket wheel seeding devices and outer groove wheel seeding devices, are difficult to stably achieve double-grain sowing, especially it is difficult to ensure the double-grain rate of double-grain sowing, and it is difficult to ensure the emergence rate of single-grain beans. At least one aspect or one purpose of the present application can solve the above problems, and a double-grain broad bean seeding device is designed, and the specific technical solution adopted is:

[0004] A double-grain broad bean seed metering device, comprising:

[0005] A frame, the frame having a seed box and a closed seed guide trough;

[0006] A plurality of chain seeding assemblies are arranged in parallel and at intervals on the frame, and each chain seeding assembly includes:

[0007] A driving sprocket, which is arranged close to the bottom of the frame;

[0008] A plurality of driven sprockets are arranged in a triangle with the driving sprocket, a chain is wound between the driving sprocket and the plurality of driven sprockets, the chain is in a vertical state on a side close to the seed box, and is in an inclined state on a side close to the seed guide groove;

[0009] Multiple seed taking spoons, multiple seed taking spoons are evenly spaced and arranged on the chain;

[0010] The power input shaft is connected with a plurality of chain seeding assemblies, and the power input shaft drives the plurality of chain seeding assemblies to work through external input power.

[0011] Preferably, each seed taking spoon comprises:

[0012] A square base body is provided with a bean-containing cavity on one side of the square base body. The bean-containing cavity is in the shape of a broad bean as a whole. The inner side wall of the bean-containing cavity is an inclined surface. A semi-enclosed baffle cover is provided on the side of the bean-containing cavity close to the chain.

[0013] Preferably, the bean-containing chamber is provided with a seed-following edge at an edge opposite to the blocking cover.

[0014] Preferably, a cleaning ear is provided on the outer wall of the blocking cover.

[0015] Preferably, a through groove for the chain and the seed spoon to pass through is provided at the bottom of the seed box, and the distance between the through groove and the chain and the seed spoon is smaller than the size of a single broad bean.

[0016] Preferably, the cross-section of the seed guiding groove is U-shaped, the square base can extend into the seed guiding groove and the side wall can abut against the side wall of the seed guiding groove.

[0017] Preferably, the chain seeding assembly further comprises a tensioning device, and the tensioning device comprises:

[0018] Two springs, one end of each spring is arranged on the side plate of the frame, and the other end is connected with a shaft sleeve slidably arranged on the side plate, the shaft sleeve is rotatably connected with the rotating shaft of one of the driven sprockets, and the two springs are arranged on both sides of the driven sprocket.

[0019] Preferably, one end of the closed seed guide groove is arc-shaped and extends to the driven sprocket, and the other end extends to the driving sprocket.

[0020] The utility model has the following technical effects through the above technical solution:

[0021] ① By setting the seed taking spoon cavity to be approximately broad bean-shaped and setting it to the above structure, it is not only highly applicable to broad bean seeds, but also basically ensures that the seeds that can enter the seed taking spoon are double seeds, and the double seed rate is high.

[0022] ② By setting the above-mentioned seed-dispensing device structure in conjunction with the seed guide groove, the broad beans in the seed spoon can be prevented from being thrown out. Even if they are thrown out, they can be confined in the seed guide groove due to the existence of the seed guide groove, and finally fall into the pit along the seed guide groove, and it can still be ensured that there are beans in the pit and they are double beans. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram of the utility model;

[0024] Figure 2 It is a three-dimensional diagram after one side panel of the rack is disassembled;

[0025] Figure 3 It is the front view of the utility model;

[0026] Figure 4 It is a three-dimensional picture of the seed spoon.

[0027] In the figure, 1, frame, 2, chain seeding assembly, 3, seed box, 4, tensioning device, 5, seed guide trough, 6, through trough;

[0028] 201, driving sprocket, 202, driven sprocket, 203, seed taking spoon, 203a, square base, 203b, bean holding chamber, 203c, seeding edge, 203d, blocking cover, 203e, cleaning ear, 204, chain;

[0029] 401, bushing, 402, spring, 403, clamping head. DETAILED DESCRIPTION

[0030] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0031] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] like Figure 1-4 As shown, a double-grain broad bean seeding device includes a frame 1, a plurality of chain seeding assemblies 2 and a power input shaft, wherein in this embodiment, two of the above-mentioned chain seeding assemblies 2 are provided, and the two chain seeding assemblies 2 are arranged in parallel and spaced apart in front and behind the frame 1 (the so-called front and back here are defined according to the perspective in the attached figure), and the power input shaft is connected to the two chain seeding assemblies 2 together, and the power input shaft drives the two chain seeding assemblies 2 to work through external input power. A seed box 3 is also provided on the right side of the frame 1 for containing broad bean seeds, and a closed seed guide groove 5 is provided on the lower right side, and the broad bean seeds fall into the ground pit along the seed guide groove 5, and the seed guide groove 5 cooperates with the chain seeding assembly 2 to separate the seed guide groove 5 into closed spaces one by one, and each closed space is limited to two broad bean seeds, so that the chain seeding assembly 2 will discharge two broad bean seeds at a certain distance during the rotation process, so as to realize double seeding.

[0033] Specifically, the specific structure of each of the above-mentioned chain seeding assemblies 2 includes a driving sprocket 201, a driven sprocket 202 and a plurality of seeding spoons 203. The driving sprocket 201 is arranged on the power input shaft and is arranged near the bottom of the frame 1. The three driven sprockets 202 and the driving sprocket 201 are generally triangularly distributed as a whole. A chain 204 is transmitted and wound between the driving sprocket 201 and the three driven sprockets 202. The chain 204 generally forms three sides on the triangularly distributed sprockets, which are vertical on one side close to the seed box 3 and inclined on one side close to the seed guide groove 5. A plurality of seeding spoons 203 are evenly spaced and arranged on the chain 204.

[0034] Attach Figure 3 Taking the figure as an example, the seeding process of the present application is described. When working, the active sprocket 201 and the passive sprocket both rotate counterclockwise, and the chain 204 rotates counterclockwise, thereby driving the seed spoon 203 to move in this direction. The seed spoon 203 is on the chain 204 and as the chain 204 rotates, when the chain 204 is in a vertical state, it is just located at the position of the seed box 3 to achieve seed taking. Then, as the chain 204 rotates, when the chain 204 is close to the seed guide groove 5 and is in an inclined state, the broad bean seeds fall into the seed guide groove 5, and the seeds fall into the soil pit along the seed guide groove 5.

[0035] Furthermore, the structure of each of the above-mentioned seed taking spoons 203 specifically includes a square base 203a, which can be a square base 203a or a rectangular base 203a. The square base 203a is provided with a bean holding chamber 203b on one side thereof. The bean holding chamber 203b is shaped like a broad bean as a whole, and its size is larger than the actual broad beans. The inner wall of the bean holding chamber 203b is an inclined surface, so that the broad beans can easily enter the bean holding chamber 203b. The bean holding chamber 203b is provided with a semi-enclosed baffle 203d on the side close to the chain 204. The semi-enclosed baffle 203d can avoid the accumulation of broad beans above the bean holding chamber 203b while ensuring that two broad beans are contained in the bean holding chamber 203b, thereby avoiding the discharge of three or more broad bean seeds from the seed taking spoon 203.

[0036] Furthermore, in order to make it easier for the broad bean seeds to slide into the bean holding chamber 203b, a seed-following edge 203c is provided on the edge of the bean holding chamber 203b opposite to the blocking cover 203d.

[0037] Furthermore, a cleaning ear 203e is provided on the outer wall of the above-mentioned blocking cover 203d. The cleaning ear 203e can move the broad bean seeds to the two sides of the seed taking spoon 203 when the seed taking spoon 203 takes seeds, thereby preventing the broad bean seeds from accumulating above the seed taking spoon 203 and better guiding the movement of the seed taking spoon 203.

[0038] Furthermore, a through slot 6 is provided at the bottom of the seed box 3 for the chain 204 and the seed spoon 203 to pass through. The distance between the through slot 6 and the chain 204 and the seed spoon 203 is less than the size of a single broad bean, which prevents the broad beans from leaking therebetween. When the seed spoon 203 is away from the through slot 6, the through slot 6 is not blocked at this time, so the broad bean seeds can be leaked at the through slot 6. However, because the size of the through slot 6 is almost the same as the size of the seed spoon 203, even if the through slot 6 leaks, only a single broad bean can pass through. Under the pressure of the broad bean seeds accumulated inside the seed box 3, it is difficult for a single broad bean to leak from the through slot 6. Moreover, if the transmission speed of the chain 204 is not very slow, when the previous seed spoon 203 leaves the through slot 6, the next seed spoon 203 will quickly reach the through slot 6, thereby achieving the blocking effect again.

[0039] Furthermore, the cross-section of the above-mentioned seed guide groove 5 is U-shaped, and the bottom of the U-shape here is a plane. The seed guide groove 5 of this shape can match the shape of the square base 203a. The so-called matching is that the side of the square base 203a is adapted to the shape of the inner wall of the seed guide groove 5, so that there is a small gap between the side of the square base 203a and the inner wall of the seed guide groove 5, or they can also abut against each other, to ensure that a closed space is formed between two adjacent seed spoons 203 and the seed guide groove 5, even if the broad beans in the seed spoon 203 fall out of it, they only exist in the closed space, and with the rotation of the chain 204, two broad bean seeds can also fall into the pit, realizing two-grain seeding.

[0040] Furthermore, in order to prevent the chain 204 from becoming loose during long-term operation, the chain seeding assembly 2 further includes a tensioning device 4, which includes:

[0041] Two springs 402, one end of each spring 402 is set on the side plate of the frame 1, and the other end is connected to the sleeve 401 slidably set on the side plate. The sleeve 401 is rotatably connected to the rotating shaft of one of the driven sprockets 202. The two springs 402 are set on both sides of the driven sprocket 202. When the position of the driven sprocket 202 needs to be changed, the position of the driven sprocket 202 can be changed by changing the compression degree of the spring 402. It should be noted that the above-mentioned sleeve 401 is fixed by a clamping head 403 set at one end. When the position of the sleeve 401 needs to be changed, the clamping head 403 is disassembled and loosened. When the sleeve 401 needs to be fixed and tightened, the clamping head 403 is installed and tightened.

[0042] Furthermore, one end of the closed seed guide groove 5 is arc-shaped and extends to the driven sprocket 202. This end can protect the broad bean seeds in the seed spoon 203 from being thrown out a long distance, and confine the broad bean seeds inside the seed guide groove 5. The other end extends to the active sprocket 201, and the broad bean seeds fall from this end along the seed guide groove 5. This position is located at the lowest end of the inclined seed guide groove 5, with the minimum distance from the ground, thereby improving the accuracy of the broad bean seeds falling into the pit.

[0043] The above-mentioned specific implementation manner cannot be used as a limitation on the protection scope of the present utility model. For those skilled in the art, any replacement, improvement or change made to the implementation manner of the present utility model falls within the protection scope of the present utility model.

[0044] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A double-grain broad bean seeding device, characterized in that: include: A frame having a seed box and a closed seed guide trough; A plurality of chain seeding assemblies, wherein the plurality of chain seeding assemblies are arranged in parallel and at intervals on the frame, and each of the chain seeding assemblies comprises: A driving sprocket, the driving sprocket is arranged close to the bottom of the frame; A plurality of driven sprockets, the plurality of driven sprockets and the driving sprocket are distributed in a triangle, a chain is wound between the driving sprocket and the plurality of driven sprockets, the chain is in a vertical state at a side close to the seed box, and is in an inclined state at a side close to the seed guide groove; A plurality of seed taking spoons, wherein the plurality of seed taking spoons are evenly spaced and arranged on the chain; A power input shaft is connected to a plurality of chain seeding assemblies, and the power input shaft drives the plurality of chain seeding assemblies to work through external input power.

2. A double-grain broad bean seed metering device according to claim 1, characterized in that: Each of the seed taking spoons comprises: A square base is provided with a bean-containing cavity on one side of the square base, the bean-containing cavity is in the shape of a broad bean as a whole, the inner side wall of the bean-containing cavity is an inclined surface, and a semi-enclosed stop cover is provided on the side of the bean-containing cavity close to the chain.

3. A double-grain broad bean seed metering device according to claim 2, characterized in that: The bean containing chamber is provided with a seed-following edge at an edge opposite to the blocking cover.

4. A double-grain broad bean seed metering device according to claim 2 or 3, characterized in that: A cleaning ear is arranged on the outer wall of the blocking cover.

5. A double-grain broad bean seed metering device according to claim 1, characterized in that: A through groove for the chain and the seed taking spoon to pass through is provided at the bottom of the seed box, and the distance between the through groove and the chain and the seed taking spoon is smaller than the size of a single broad bean.

6. A double-grain broad bean seed metering device according to claim 2, characterized in that: The cross section of the seed guiding groove is U-shaped, the square base can extend into the seed guiding groove and the side wall can abut against the side wall of the seed guiding groove.

7. A double-grain broad bean seed metering device according to claim 1, characterized in that: The chain seeding assembly also includes a tensioning device, which includes: Two springs, one end of each spring is arranged on the side plate of the frame, and the other end is connected to a shaft sleeve slidably arranged on the side plate, the shaft sleeve is rotatably connected to the rotating shaft of one of the driven sprockets, and the two springs are arranged on both sides of the driven sprocket.

8. A double-grain broad bean seed metering device according to claim 1 or 6, characterized in that: One end of the closed seed guiding groove is arc-shaped and extends to the driven sprocket, and the other end extends to the driving sprocket.

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