A trencher with strong stability

Abstract

The present invention discloses a trencher with strong stability, which relates to the field of agricultural machinery and includes a frame. A trenching wheel, a fertilizer guiding plate and a soil covering plate are arranged on the frame. The soil covering plate covers above the trenching wheel. A valve plate is arranged on the fertilizer guiding plate. The soil covering plate is swingably connected to the frame. The soil covering plate and the valve plate are interlocked so that the swing amplitude of the soil covering plate is proportional to the opening amplitude of the valve plate. During the forward stroke of the trencher, the soil covering plate swings due to the impact of the soil thrown by the trenching wheel. For the trencher with strong stability provided by the present invention, the soil will impact the soil covering plate to make it swing, and the soil covering plate and the valve plate are interlocked to control the opening amplitude of the valve plate. Thus, the faster the forward speed of the trencher is, the more soil it throws up, the greater the swing amplitude of the soil covering plate is, and at this time the opening amplitude of the valve plate is greater. In this way, the amount of fertilizer falling into the trench can be passively adjusted through the cooperation between the soil covering plate and the fertilizer guiding plate.

Description

Technical Field

[0001] The present invention relates to the field of agricultural machinery, and particularly relates to a trencher with strong stability. Background Art

[0002] A trencher is a mechanical device used for trenching in farmland or orchards. Its main function is to open a ditch on the ground so as to carry out planting or other agricultural operations in the ditch. At present, the trenchers in the existing technology are mainly of the type of integrated trenching, fertilizing and soil covering. The general process is that the cutting tool of the trencher cuts and opens a ditch on the ground, and the soil is thrown backward by the trenching knife. At the same time, the fertilizer falls into the ditch from the fertilizer inlet through the fertilizer guide plate. The thrown soil falls back into the opened ditch under the block of the soil covering plate, thus completing the operations of trenching, fertilizing and soil covering.

[0003] For example, the patent with the authorization announcement number CN207410727U and the authorization announcement date of May 29, 2018, named "A Trenching, Fertilizing and Soil Covering Machine", includes a frame, a trenching device, a fertilizing device and a soil covering device. The trenching device includes a cutter head, blades and a driving mechanism. The fertilizing device includes a box body, a fertilizer distributor and a fertilizer auger. The soil covering device includes a soil covering disc and a soil covering disc shaft. The fertilizing device is fixed at the upper end of the frame. The trenching device is fixed directly below the fertilizing device. The soil covering device is fixed directly behind the trenching device in the traveling direction. The driving mechanism includes a bevel gear speed reducer and a driving shaft. The driving shaft drives the bevel gear speed reducer to rotate. The center line of the driving shaft and the center line of the fertilizer auger are located in the same vertical plane. There is an included angle between the center lines of the driving shaft and the fertilizer auger. The driving shaft drives and connects the fertilizer auger through a speed regulator fixed on the frame. This patent reduces the width of the whole trenching, fertilizing and soil covering machine, improves the overall flexibility, has a clever structure, saves a set of driving devices and reduces the cost.

[0004] The deficiencies of the above patent include that during the whole trenching process, when the fertilizer in the prior art falls into the ditch through the fertilizer guide plate, the falling speed of the fertilizer will remain the same. However, when the trencher is trenching, if the forward speed of the trencher is inconsistent, it will cause the amount of fertilizer in the falling area to be different. For example, when the speed of the trencher is relatively slow, more fertilizer will fall in this area. When the speed of the trencher is relatively fast, less fertilizer will fall in this area. This greatly affects the fertilization effect. Summary of the Invention

[0005] The purpose of the present invention is to provide a trencher with strong stability to solve the above deficiencies in the prior art.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A trencher with strong stability, comprising a frame, on which a trenching wheel, a fertilizer guiding plate and a soil covering plate are arranged. The soil covering plate covers above the trenching wheel. A valve plate is arranged on the fertilizer guiding plate. The soil covering plate is swingably connected to the frame, and the soil covering plate is interlocked with the valve plate so that the swing amplitude of the soil covering plate is proportional to the opening amplitude of the valve plate. During the forward stroke of the trencher, the soil covering plate swings due to the impact of the soil thrown by the trenching wheel.

[0008] For the above-mentioned trencher with strong stability, the fertilizer guiding plate includes a bottom plate and two side plates arranged oppositely. The bottom plate and the two side plates form a channel for conveying fertilizer, and the valve plate is arranged on the channel.

[0009] For the above-mentioned trencher with strong stability, the soil covering plate is interlocked with the valve plate through an adjusting mechanism, and the adjusting mechanism is arranged on both sides of the fertilizer guiding plate.

[0010] For the above-mentioned trencher with strong stability, a groove is arranged on the fertilizer guiding plate. One end of the adjusting mechanism is connected to the valve plate through the groove, and the other end of the adjusting mechanism is connected to the soil covering plate.

[0011] For the above-mentioned trencher with strong stability, the adjusting mechanism includes a slider and an adjusting rod. A chute is arranged on the top surface of the soil covering plate, and the slider is slidably connected in the chute. One end of the adjusting rod is rotatably connected to the slider. A protruding part is arranged on the side of the valve plate, and the protruding part is slidably connected in the groove. The other end of the adjusting rod is rotatably connected to the protruding part.

[0012] For the above-mentioned trencher with strong stability, a guiding mechanism is arranged on the fertilizer guiding plate to limit the sliding direction of the valve plate.

[0013] For the above-mentioned trencher with strong stability, a discharge port is arranged through the soil covering plate, and one end of the fertilizer guiding plate extends into the discharge port.

[0014] For the above-mentioned trencher with strong stability, the outer dimension of the discharge port is larger than the dimension of the fertilizer guiding plate so that the soil covering plate has a swinging space.

[0015] For the above-mentioned trencher with strong stability, a sealing cloth is arranged on the discharge port. One end of the sealing cloth is connected to the inner wall of the discharge port, and the other end of the sealing cloth is connected to the fertilizer guiding plate.

[0016] For the above-mentioned trencher with strong stability, a cover is arranged on the fertilizer guiding plate to prevent fertilizer from spilling out of the fertilizer guiding plate.

[0017] In the above technical solution, a trencher with strong stability provided by the present invention is described. During the forward movement of the trencher, the soil in the trench dug by the trencher will be thrown backward by the trenching wheel, and the soil will impact the soil covering plate, causing the soil covering plate to swing. The soil covering plate and the valve plate are interlocked to control the opening amplitude of the valve plate. Thus, the faster the forward speed of the trencher, the more soil will be thrown up, and the larger the swing amplitude of the soil covering plate. At this time, the opening amplitude of the valve plate is larger, so that the amount of fertilizer falling into the trench can be passively adjusted through the cooperation between the soil covering plate and the fertilizer guiding plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of the trencher provided by the embodiment of the present invention;

[0020] Figure 2 It is a schematic structural diagram of the trencher provided by another embodiment of the present invention;

[0021] Figure 3 It is a cross-sectional view of the fertilizer guiding plate provided by another embodiment of the present invention;

[0022] Figure 4 It is a schematic structural diagram of one side of the fertilizer guiding plate provided by another embodiment of the present invention.

[0023] Description of the reference numerals:

[0024] 1. Fertilizer guiding plate; 2. Soil covering plate; 2.1 Discharge port; 2.2 Sealing cloth; 3. Trenching wheel; 4. Valve plate; 5. Adjusting mechanism; 5.11. Chute; 5.12. Slide block; 5.2. Adjusting rod; 6. Groove; 7. Extension part; 8. Tank body; 9. Protruding part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will further introduce the present invention in detail with reference to the drawings.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "degree", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In the present invention, the bottom end or the lower part is the direction close to the ground, and the top end or the upper part is the direction away from the ground.

[0027] Referring to Figures 1-4 , an embodiment of the present invention provides a trencher with strong stability, including a frame. A trenching wheel 3, a fertilizer guiding plate 1, and a soil covering plate 2 are arranged on the frame. The soil covering plate 2 covers above the trenching wheel 3. A valve plate 4 is arranged on the fertilizer guiding plate 1. The soil covering plate 2 is swingably connected to the frame. The soil covering plate 2 is linked with the valve plate 4 so that the swing amplitude of the soil covering plate 2 is proportional to the opening amplitude of the valve plate 4. During the forward stroke of the trencher, the soil covering plate 2 swings due to the impact of the soil thrown by the trenching wheel 3.

[0028] Specifically, the trenching machine includes a frame, on which a covering plate 2 and a trenching wheel 3 are provided. The trenching wheel 3 is circumferentially provided with a plurality of cutting tools for trenching. The covering plate 2 is provided directly above or above the side of the trenching wheel 3. Its function is that when the trenching machine is traveling, the trenching wheel 3 throws up the soil in the process of cutting into the soil on the ground to form a groove through the cutting tool. The covering plate 2 blocks the soil in the throwing-up stroke, thus preventing the disorderly scattering of the soil. Obviously, the covering plate 2 also has a safety protection function. A fertilizer guide plate 1 is also provided on the frame, and one end of the fertilizer guide plate 1 is connected to a fertilizer storage mechanism on the trenching machine, such as a fertilizer barrel, and the other end is located behind the driving direction of the trenching wheel 3 to transport the fertilizer to the trench that has just been opened. The above are all existing technologies and will not be repeated. This embodiment has at least two improvements on the basis of the prior art. First, the soil cover plate 2 is connected to the frame in a swinging manner, such as the soil cover plate 2 is connected to the frame in a swinging manner through a rotating shaft so that it can swing up and down in the vertical direction. Second, a valve plate 4 is provided on the fertilizer guide plate 1, and a passage for conveying fertilizer is formed on the fertilizer guide plate 1. The valve plate 4 is provided on the passage to control the opening and closing amplitude. The soil cover plate 2 is linked with the valve plate 4 to control the opening amplitude of the valve plate 4. When the trenching wheel 3 is trenching, the trenching wheel 3 is used to open the trench. The wheel 3 will throw up the soil and hit the soil cover plate 2 to make it swing, and at the same time, the thrown soil will be knocked back to the ground. The effect of the linkage between the soil cover plate 2 and the valve plate 4 is that the swing of the soil cover plate 2 can drive the valve plate 4 to swing basically synchronously. In this way, there are many linkage modes. For example, a gear rack is provided on the soil cover plate 2, the rack is connected to the soil cover plate 2, and the valve plate 4 is rotatably connected to the fertilizer guide plate 1 through the central axis. A gear is fixed on the central axis, and the gear rack is meshed with each other. In this way, the swing of the soil cover plate 2 drives the gear rack to mesh with each other. The movement of the strip drives the gear to rotate, thereby driving the valve plate 4 to open. In this way, the covering plate 2 is hit by the soil thrown up by the trenching wheel 3 and swings upward, driving the valve plate 4 to open, that is, the valve plate 4 gradually opens to form an opening, and the fertilizer falls from the opening. In other words, the greater the swing amplitude of the covering plate 2, the larger the opening opened by the valve plate 4. In this way, when the trenching machine speed is faster, the more soil is thrown up, the greater the impact force on the covering plate 2, and the greater the swing amplitude of the covering plate 2, thus driving the valve plate 4 to open a larger opening. The covering plate 2 is linked with the valve plate 4 so that the swing amplitude of the covering plate is substantially proportional to the opening amplitude of the valve plate 4. When the trencher stops working, the covering plate 2 will also stop swinging, and the valve plate 4 is closed at this time. In this way, the impact force of the soil thrown up by the trenching wheel 3 hitting the covering plate 2 is used as power to drive the covering plate 2 to swing, thereby controlling the opening size of the valve plate 4, that is, the valve plate 4 can be opened and closed passively, and the size of the opening opened by the valve plate 4 can also be adjusted according to the travel speed of the trencher.

[0029] A trencher with strong stability provided by an embodiment of the present invention. During the forward movement of the trencher, the soil in the trench dug by the trencher will be thrown backward by the trenching wheel 3, and the soil will impact the soil covering plate 2, causing the soil covering plate 2 to swing. The soil covering plate 2 and the valve plate 4 are linked, so that the valve plate 4 will be opened at this time. Thus, the faster the forward speed of the trencher, the more soil will be thrown up, the greater the swing amplitude of the soil covering plate 2, and the greater the opening amplitude of the valve plate 4 at this time. In this way, the amount of fertilizer falling into the trench can be passively adjusted through the cooperation between the soil covering plate 2 and the fertilizer guiding plate 1.

[0030] In another embodiment provided by the present invention, as Figure 1 shown, the soil covering plate 2 is linked with the valve plate 4 through an adjusting mechanism 5. The adjusting mechanism 5 is arranged on both sides of the fertilizer guiding plate 1. The adjusting mechanism 5 includes a slider 5.12 and an adjusting rod 5.2. A chute 5.11 is arranged on the top surface of the soil covering plate 2. The slider 5.12 is slidably connected in the chute 5.11. One end of the adjusting rod 5.2 is rotatably connected to the slider 5.12. The radial cross-section of the fertilizer guiding plate 1 is U-shaped, that is, it includes a bottom plate and two relatively arranged side plates. Each of the two side plates is provided with a groove 6. A protruding part (not shown in the figure) is arranged on the side of the valve plate 4. The protruding part is slidably connected in the groove 6. The other end of the adjusting rod 5.2 is rotatably connected to the protruding part, that is, one end of the adjusting rod 5.2 is rotatably connected to the valve plate 4 through the protruding part in the groove 6. Thus, when the soil covering plate 2 swings, the slider 5.12 will perform a combined movement of sliding and swinging on the chute 5.11, and the adjusting rod 5.2 will move vertically upward as a whole. Due to the rotational connection between the adjusting rod 5.2 and the valve plate 4, the adjusting rod 5.2 will drive the valve plate 4 to move upward at this time, so that the valve plate 4 is opened. By arranging the adjusting mechanism 5 in this way, when the soil covering plate 2 swings, the adjusting rod 5.2 will move axially upward to drive the valve plate 4 to open upward.

[0031] Preferably, the fertilizer guiding plate 1 is provided with a guiding mechanism such as a slide rail to limit the sliding direction of the valve plate 4 and prevent it from swinging. This is the prior art and can also be achieved by relying on the limitation of the flat protruding part and the groove 6, which will not be elaborated.

[0032] In the foregoing embodiment, since the position of the limiting valve plate 4 can be set relatively forward and the inclination angle of the fertilizer guiding plate 1 can be set relatively small, even if the top opening of the fertilizer guiding plate 1 is provided, there will be no fertilizer overflow. In another embodiment provided by the present invention, as Figures 2-4As shown, a cover shell is provided on the fertilizer guiding plate 1, that is, the opening of the U-shaped structure is blocked by the cover shell, and the channel for conveying fertilizer becomes the internal cavity formed by the fertilizer guiding plate 1 and the cover shell. The cover shell is used to prevent fertilizer from overflowing outside the fertilizer guiding plate 1. In this embodiment, a discharge port 2.1 is provided through the soil covering plate 2, and one end of the fertilizer guiding plate 1 extends into the discharge port 2.1, that is, the lower end of the fertilizer guiding plate 1 is located below the inner side of the soil covering plate 2. In this way, fertilizer can enter the trench dug by the ditching wheel 3 from the inner side of the soil covering plate 2 through the discharge port 2.1. At this time, the key point is that an extension part 7 is formed on the soil covering plate 2 and extends into the inner side of the channel of the fertilizer guiding plate 1. That is, a groove body adapted to the entry of the extension part 7 into the inner side of the channel is provided on the cover shell of the fertilizer guiding plate 1. The extension part 7 extends into the channel through the groove body and abuts against the bottom wall of the channel. This extension part 7 is the valve plate 4, that is, the valve plate 4 is a part of the soil covering plate 2. Grooves 6 are provided on the two side plates of the fertilizer guiding plate 1, and protruding parts 9 are provided on the two sides of the valve plate 4. The protruding parts 9 are connected to the fertilizer guiding plate 1 through the grooves 6. That is, one end of the protruding part 9 is connected to the valve plate 4, and the other end is slidably connected in the groove 6. In this way, when the soil covering plate 2 swings, the groove 6 will limit the swinging amplitude of the soil covering plate 2. When the soil covering plate 2 does not swing initially, the end of the valve plate 4 overlaps on the bottom wall of the channel to realize the closing of the channel. When the soil covering plate 2 swings, the valve plate 4 will swing along with the swing of the soil covering plate 2 and thus separate from the bottom wall of the channel to realize the opening, and the opening amplitude is proportional to the swing amplitude of the soil covering plate 2. In this way, the soil covering plate 2 and the valve plate 4 are interlocked without a regulating mechanism 5 or auxiliary components. Only by the interlock between the soil covering plate 2 and the valve plate 4 can the valve plate 2 be opened or closed, and at the same time when throwing soil, the fertilizer will fall, so that the mixing of fertilizer and soil can be realized. Moreover, since the end of the swinging stroke of the soil covering plate 2 impacts the fertilizer guiding plate 1 and causes it to vibrate, the probability of its blockage is reduced, and the channel of the fertilizer guiding plate 1 limits the swinging direction of the soil covering plate 2 through the guiding of the extension part 7. That is, the soil covering plate 2 assists the fertilizer guiding plate 1 to vibrate, and the fertilizer guiding plate 1 assists the soil covering plate 2 in guiding and limiting.

[0033] Further, a sealing cloth 2.2 is provided on the discharge port 2.1. One end of the sealing cloth 2.2 is connected to the discharge port 2.1, and the other end of the sealing cloth 2.2 is connected to the outer wall of the fertilizer guiding plate 1. Preferably, the sealing cloth 2.2 is a soft cloth. The purpose of setting the sealing cloth 2.2 is to seal the discharge port 2.1 so that soil will not be thrown out from the discharge port 2.1, and the soft material will not limit the swing of the soil covering plate 2.

[0034] Only some exemplary embodiments of the present invention have been described by way of illustration. Undoubtedly, those of ordinary skill in the art can modify the described embodiments in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A trencher with strong stability, comprising a frame, on which a trenching wheel, a fertilizer guiding plate and a soil covering plate are arranged, the soil covering plate covers above the trenching wheel, and a valve plate is arranged on the fertilizer guiding plate, characterized in that, The soil covering plate is swingably connected to the frame, and the soil covering plate is interlocked with the valve plate so that the swing amplitude of the soil covering plate is proportional to the opening amplitude of the valve plate. During the forward stroke of the ditcher, the soil covering plate swings due to the impact of the soil thrown by the ditch wheel.

2. The trencher with strong stability according to claim 1, characterized in that, The fertilizer guiding plate includes a bottom plate and two side plates arranged oppositely. The bottom plate and the two side plates form a channel for conveying fertilizer, and the valve plate is arranged on the channel.

3. The trencher with strong stability according to claim 1, characterized in that, The soil covering plate is interlocked with the valve plate through an adjusting mechanism, and the adjusting mechanism is arranged on both sides of the fertilizer guiding plate.

4. The trencher with strong stability according to claim 3, characterized in that, A groove is provided on the fertilizer guiding plate. One end of the adjusting mechanism is connected to the valve plate through the groove, and the other end of the adjusting mechanism is connected to the soil covering plate.

5. The trencher with strong stability according to claim 4, characterized in that The adjusting mechanism includes a slider and an adjusting rod. A chute is provided on the top surface of the soil covering plate, and the slider is slidably connected in the chute. One end of the adjusting rod is rotatably connected to the slider, and a protruding portion is provided on the side of the valve plate. The protruding portion is slidably connected in the groove, and the other end of the adjusting rod is rotatably connected to the protruding portion.

6. The trencher with strong stability according to claim 1, characterized in that, A guiding mechanism is provided on the fertilizer guiding plate to limit the sliding direction of the valve plate.

7. The trencher with strong stability according to claim 1, characterized in that, A discharge port is provided through the soil covering plate, and one end of the fertilizer guiding plate extends into the discharge port.

8. The trencher with strong stability according to claim 7, characterized in that, The outer dimension of the discharge port is larger than the dimension of the fertilizer guiding plate so that the soil covering plate has a swinging space.

9. The ditcher with strong stability according to claim 8, characterized in that, A sealing cloth is provided on the discharge port. One end of the sealing cloth is connected to the inner wall of the discharge port, and the other end of the sealing cloth is connected to the fertilizer guiding plate.

10. The trencher with strong stability according to claim 1, characterized in that, A cover shell is provided on the fertilizer guiding plate, and the cover shell is used to prevent fertilizer from spilling out of the fertilizer guiding plate.

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