Ditching device for gleying type rice field improvement

By using stretching components and cylinder adjustment excavation components in the trench excavation device of the modified latent breeding rice field, combined with the cooperation of the flip blade and spiral blade, the problems of difficulty in equipment adjustment and untimely soil discharge in the prior art are solved, and the work is improved Efficiency and enhance groove stability.

CN222128635UActive Publication Date: 2024-12-10HUNAN SOIL & FERTILIZER INST
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202420761281.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-12
Publication Date
2024-12-10
Estimated Expiration
2034-04-12

AI Technical Summary

Technical Problem

In the improvement of latent breeding rice fields, existing trench excavation equipment requires manual position adjustment to the location is time-consuming and labor-intensive. The excavated soil cannot be discharged in time and the trench body is poorly stable, making it prone to collapse.

Method used

A trench digging device is designed, by setting a stretching assembly between the vehicle body and the excavation component, adjusting the height and angle with cylinder control, and equipped with flip blades and spiral blades to cooperate with excavation and discharge of soil, the baffle is used to shape the trench body and Compact.

Benefits of technology

It reduces artificial physical strength output, improves work efficiency, ensures timely discharge of soil, enhances the stability of the groove body, and avoids collapse.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222128635U_ABST
    Figure CN222128635U_ABST
Patent Text Reader

Abstract

The utility model discloses a ditching device for improving a gleying type rice field, which comprises a frame, wheels mounted on the frame, an engine and a console mounted at the head of the frame, a transmission shaft connected to the output end of the engine, the transmission shaft extending to the tail end of the frame, a stretching component arranged at the tail of the frame, and a top plate connected to the stretching component. A layer plate is arranged below the top plate, a gear shaft is rotationally connected between the top plate and the layer plate through a bearing seat, one end of the gear shaft is connected with a transmission shaft through an adjusting shaft, a second gear is installed at the other end of the gear shaft, a first gear is installed on the gear shaft, the first gear is meshed with a third gear, and a chain wheel shaft is installed on the third gear. A first chain wheel is arranged on the chain wheel shaft; an overturning shaft is arranged below the layer plate, overturning blades and a second chain wheel are arranged on the overturning shaft, and the first chain wheel and the second chain wheel are in transmission through a chain penetrating through the layer plate; the second gear is engaged with a fourth gear, and a spiral assembly is installed on the fourth gear. And the excavation of the channel and the export and reflattening of the soil are realized.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the field of trenching and grooving, and in particular to a trenching device used for improving latent rice fields. Background Art

[0002] Soil gleyization refers to the soil formation process in which the soil is in a state of long-term infiltration by saturated or supersaturated groundwater, in which Eh < 200mv in some layers within 1m of the soil, and Fe and Mn reduction occurs to form a gray streak layer, a sapropel layer, a green mud layer, or a peat layer.

[0003] Compared with non-submerged soil, submerged soil contains more harmful reducing substances; the soil is cold; the biological activity of the soil is weak, and the mineralization of organic matter is inhibited. This can easily lead to stunted seedlings in rice fields, late maturity and low yield. Submerged soil is characterized by a high groundwater level, frequent water inundation, saturated soil, and anoxic reduction state.

[0004] Improving latent rice fields usually involves digging ditches to drain stagnant water and lowering the groundwater level, improving soil permeability, promoting the oxidation of reducing substances, and promoting the decomposition of soil organic matter and nutrient conversion.

[0005] Chinese patent document CN204475398U discloses a trenching machine. The utility model discloses a trenching machine, including a frame, a driving mechanism is provided on the top of the front end of the frame, and a gear box connected to the driving mechanism is provided on the top of the rear end of the frame. Wheels connected to the gear box are symmetrically provided on both sides of the frame, and a plurality of angle steels are evenly provided on the surface of the wheels. A trenching blade frame is fixed to the rear side of the gear box, and a trenching blade fixing frame is provided at the other end of the trenching blade frame. A trenching blade is provided on the trenching blade fixing frame, and the trenching blade fixing frame and the gear box are connected through gear transmission. A baffle is provided just above the trenching blade, and a rubber baffle is provided behind the trenching blade. A blade gear connected to the gear box and controlling the trenching blade is provided on the rear side of the gear box. A wheel gear connected to the gear box and controlling the wheel is provided on the top of the gear box. A tool box is provided on the top of the wheel gear. Moving handles are symmetrically provided on both sides of the wheel gear, and a brake handle connected to the wheel is provided on the moving handle. The wheels of the trenching machine are not easy to be embedded in the soil during trenching, and the trenching depth is deep.

[0006] In the prior art, a longer trenching blade and a larger driving mechanism are provided to implement trenching at a greater depth. However, the trenching equipment needs to be lifted and adjusted manually, which is time-consuming and labor-intensive. The excavated soil cannot be discharged in time, resulting in the soil being refilled in the trench, reducing work efficiency. The excavated trench body is not compacted and shaped, and has poor stability and is prone to collapse. Utility Model Content

[0007] In view of the shortcomings of the prior art, the utility model provides a trenching device for improving latent rice fields. An extension component is arranged between a vehicle body and an excavating component. The extension component adjusts the height and angle of the excavating component through a cylinder control to implement the next step of excavation. A flip blade and a spiral blade are arranged to cooperate so that the excavated soil can be discharged from the trench body in time. The baffle shapes the trench body, and the arc-shaped pressure plates arranged on both sides of the baffle compact the discharged soil.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A trenching device for improving latent rice fields comprises a frame, wheels are installed on the frame, an engine and a control console are installed at the front of the frame, an output end of the engine is connected to a transmission shaft, the transmission shaft extends to the rear end of the frame, an extension assembly is provided at the rear end of the frame, the extension assembly is connected to a top plate, a layer plate is connected to the bottom of the top plate through a guard plate, a gear shaft is provided between the top plate and the layer plate for rotation connection through a bearing seat, one end of the gear shaft is connected to the transmission shaft through an adjusting shaft, a second gear is installed at the other end of the gear shaft, a first gear is installed on the gear shaft, a third gear is meshed with the first gear, a sprocket shaft is installed on the third gear, a first sprocket is provided on the sprocket shaft; a flip shaft is provided below the layer plate, a flip blade and a second sprocket are provided on the flip shaft, the first sprocket and the second sprocket are driven by a chain that penetrates the layer plate; a fourth gear is meshed with the second gear, a spiral assembly is installed on the fourth gear;

[0010] As a preferred technical solution of the utility model, the extension assembly includes a first support rod, a second support rod, a first fixing frame and a second fixing frame fixedly mounted on the rear of the frame, the two ends of the first support rod are respectively connected to the top plate and the frame through ear plates, the two ends of the second support rod are respectively connected to the top plate and the frame through ear plates, a first cylinder is connected between the first fixing frame and the first support rod, and a second cylinder is connected between the second fixing frame and the second support rod;

[0011] As a preferred technical solution of the utility model, the ear plate connecting the first support rod and the top plate is the first ear plate, and the ear plate connecting the second support rod and the top plate is the third ear plate; the ear plate connecting the first support rod and the frame is the second ear plate, and the ear plate connecting the second support rod and the frame is the fourth ear plate;

[0012] As a preferred technical solution of the utility model, an arch frame is fixed on the top plate, a fifth ear plate is welded on the arch frame, the fifth ear plate is located between the first ear plate and the third ear plate, a fixing plate is welded on the tail of the frame, the fixing plate is located between the first fixing frame and the second fixing frame, and a third cylinder is connected and installed between the fixing plate and the fifth ear plate;

[0013] As a preferred technical solution of the utility model, the adjusting shaft includes an adjusting sleeve, and the first universal joint and the second universal joint are respectively installed at both ends of the adjusting sleeve;

[0014] As a preferred technical solution of the utility model, the spiral assembly includes a spiral shaft installed on the fourth gear, the spiral shaft passes through the layer plate, a third bearing seat is arranged on the layer plate, and a spiral blade is installed on the spiral shaft below the layer plate;

[0015] As a preferred technical solution of the utility model, a baffle is installed on one side of the spiral blade, the baffle is located in a direction away from the frame, and arc-shaped pressure plates are arranged on the upper parts of both sides of the baffle;

[0016] As a preferred technical solution of the utility model, guard plates are provided on both sides of the top plate, the guard plates extend to the bottom of the layer plates, and both ends of the flip shaft are connected and installed in the guard plates on both sides through bearings.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. An extension component is arranged between the vehicle body and the excavation component. The extension component adjusts the height and front-to-rear distance of the excavation component through the extension and retraction of the first cylinder and the second cylinder. The extension and retraction of the third cylinder adjusts the angle of the excavation component. The third cylinder also plays an auxiliary supporting role for the excavation component. The manual physical output is reduced, the efficiency is improved, and the probability of error is reduced.

[0019] 2. The flip blade and the spiral blade are arranged to cooperate with each other. The flip blade excavates and loosens the soil in the ditch body, and the spiral blade divides and refines the excavated soil and can discharge the ditch body in time to avoid passive backfilling of the soil; the refined soil is discharged and quickly improved into non-submerged soil through sun exposure, which is convenient for the next use, reduces the process and improves the efficiency; the baffle shapes the excavated ditch body, concentrates the undischarged soil, and accumulates it in the working area of ​​the rotating blade, which is convenient for further discharge and improves the work efficiency; arc-shaped pressure plates are arranged on both sides of the baffle, and the arc-shaped pressure plates extend and lengthen to both sides to compact the discharged soil, enhance the stability of the ditch body and avoid structural collapse. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the utility model device;

[0021] Figure 2 This is a schematic diagram of the structure of the extension assembly of the utility model;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the excavation component of the utility model. Figure 1 ;

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the excavation component of the utility model. Figure 2 ;

[0024] In the figure: 11, frame; 12, engine; 13, control console; 14, wheel; 15, top plate; 16, baffle; 17, arc pressure plate; 18, arch frame; 19, first ear plate; 20, first support rod; 21, second ear plate; 22, third ear plate; 23, second support rod; 24, fourth ear plate; 25, first fixing frame; 26, first cylinder; 27, second fixing frame; 28, second cylinder; 29, Y-type joint; 30, fixing plate; 31, third cylinder; 32, fifth ear plate; 33, cylinder drive assembly; 34, transmission shaft; 35, The first universal joint; 36. Adjustment sleeve; 37. The second universal joint; 38. Layer; 39. Gear shaft; 40. The first bearing seat; 41. The first gear; 42. The second gear; 43. The third gear; 44. The fourth gear; 45. The second bearing seat; 46. The third bearing seat; 47. The spiral shaft; 48. The spiral blade; 49. The first sprocket; 50. The second sprocket; 51. The chain; 52. The flip shaft; 53. The flip blade; 54. The fourth bearing seat; 55. The sprocket shaft; 56. The extension assembly; 57. The adjustment shaft; 58. The spiral assembly; 59. The guard plate. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. In the description of the present utility model, it should be understood that the terms "center", "upper", "lower", "front", "back", "first", "last", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] Figure 1-Figure 4In the invention, a trenching device for improving a latent rice field is provided, comprising a frame 11, a wheel 14 is mounted on the frame 11, an engine 12 and a control console 13 are mounted on the front of the frame 11, an output end of the engine 12 is connected to a transmission shaft 34, the transmission shaft 34 extends to the rear end of the frame 11, an extension assembly 56 is provided at the rear end of the frame 11, the extension assembly 56 is connected to a top plate 15, a layer plate 38 is connected to the bottom of the top plate 15 through a guard plate 59, a gear shaft 39 is provided between the top plate 15 and the layer plate 38 for rotational connection through a bearing seat, one end of the gear shaft 39 is adjusted The shaft 57 is connected to the transmission shaft 34, and the second gear 42 is installed at the other end of the gear shaft 39. The first gear 41 is installed on the gear shaft 39, and the first gear 41 is meshed with the third gear 43. The sprocket shaft 55 is installed on the third gear 43, and the first sprocket 49 is provided on the sprocket shaft 55; a flip shaft 52 is provided below the layer plate 38, and a flip blade 53 and a second sprocket 50 are provided on the flip shaft 52. The first sprocket 49 and the second sprocket 50 are driven by a chain 51 that passes through the layer plate 38; the second gear 42 is meshed with the fourth gear 44, and the spiral assembly 58 is installed on the fourth gear 44.

[0028] Among them, the engine 12, the control console 13 and the wheel 14 on the frame 11 are combined to form a power drive. In addition to driving the wheel 14 to move, the output end of the engine 12 is connected to the transmission shaft 34 through a gear box group. The transmission shaft 34 extends to the rear end of the frame 11 through an adjusting shaft and a universal joint. The above are all existing technologies and can be purchased commercially.

[0029] The first support rod 20 and the second support rod 23 connect and support the top plate 15. The connection between the frame 11 and the top plate 15 is movably connected by ear plates. The ear plates are double ear plates with pins installed in the ear plates. The first ear plate 19 and the third ear plate 22 are fixed to the top plate 15 by welding, and the second ear plate 21 and the fourth ear plate 24 are fixed to the rear of the frame 11 by welding.

[0030] Figure 1-Figure 2 As shown in the figure, through holes are provided at the ends of the first support rod 20 and the second support rod 23, and the through holes are installed in the corresponding pins, so that the first support rod 20 and the second support rod 23 can rotate around the pins of the second ear plate 21 and the fourth ear plate 24, and the top plate 15 can rotate around the pins of the first ear plate 19 and the third ear plate 22, and the upper and lower positions or tilt angles of the top plate 15 can be adjusted by connecting the cylinders.

[0031] The first fixing frame 25 and the second fixing frame 27 are both fixed to the rear of the frame 11 by welding. A first cylinder 26 is connected between the first fixing frame 25 and the first support rod 20 , and a second cylinder 28 is connected between the second fixing frame 27 and the second support rod 23 .

[0032] Through holes are formed on the first support rod 20 and the second support rod 23, and the Y-shaped joints 29 at both ends of the first cylinder 26 are respectively connected to the through hole at the top of the first fixing frame 25 and the through hole on the first support rod 20. The Y-shaped joints 29 at both ends of the second cylinder 28 are respectively connected to the through hole at the top of the second fixing frame 27 and the through hole on the second support rod 23.

[0033] Under the action of the Y-shaped joint 29, the first cylinder 26 and the second cylinder 28 can both be adjusted in the vertical direction. When the first cylinder 26 and the second cylinder 28 are contracted, the first support rod 20 is driven to rotate around the pin of the second ear plate 21 ( Figure 2 The second support rod 23 rotates around the pin of the fourth ear plate 24 ( Figure 2 The connection points between the first cylinder 26 and the second cylinder 28 and the corresponding support rods are raised, so that the first cylinder 26 and the second cylinder 28 rotate around the pin shaft of the Y-type joint 29 on the fixed frame, so as to achieve the height increase of the top plate 15. An excavating component is fixed under the top plate 15, and the excavating component moves up and down with the top plate 15.

[0034] An arch frame 18 is fixed on the top plate 15, and a fifth ear plate 32 is welded on the arch frame 18, and the fifth ear plate 32 is located between the first ear plate 19 and the third ear plate 22. A fixing plate 30 is welded at the rear of the frame 11, and the fixing plate 30 is located between the first fixing frame 25 and the second fixing frame 27. A third cylinder 31 is connected and installed between the fixing plate 30 and the fifth ear plate 32. The function of the third cylinder 31 is to stretch and limit the top end of the arch frame 18, adjust the balance of the top plate 15, and also play a role of upward auxiliary support for the top plate 15.

[0035] During installation, the connections between the first cylinder 26 and the second cylinder 28 and the first support rod 20 and the second support rod 23 are all arranged close to the frame 11 to reduce the radial force on the cylinder and ensure the safe use of the equipment components. The components fixed below the top plate 15 are made of lightweight materials with appropriate strength to reduce the radial load on the cylinder.

[0036] The air supply and control operations of the first air cylinder 26 , the second air cylinder 28 and the third air cylinder 31 are realized by the air cylinder driving assembly 33 , which are all prior arts and commercially available.

[0037] Figure 3As shown in , a layer plate 38 is arranged below the top plate 15, and a guard plate 59 is arranged below both sides of the top plate 15. The guard plate 59 extends to the bottom of the layer plate 38. A baffle 16 is arranged on one side of the guard plate 59. The baffle 16 is located in a direction away from the frame 11. The bottom of the layer plate 38, the guard plate 59 and the baffle 16 are surrounded to form a deep digging area, and the bottom of the deep digging area is connected to the outside. A flip shaft 52 is arranged in the deep digging area, and both ends of the flip shaft 52 are installed at the bottom of the guard plate 59 by bearing connection. A flip blade 53 is installed on the flip shaft 52. A spiral shaft 47 is arranged on one side of the flip blade 53. The spiral shaft 47 is located on the side away from the frame 11. The spiral shaft 47 passes through the layer plate 38. A spiral blade 48 is installed on the spiral shaft 47 located below the layer plate 38. A third bearing seat 46 is arranged on the layer plate 38. A bearing is installed at the place where the spiral shaft 47 passes through the third bearing seat 46. An angular contact bearing is preferably used to facilitate bearing axial and radial forces.

[0038] Figure 4 As shown in FIG. 1 , arc-shaped pressing plates 17 are provided on the upper parts of both sides of the baffle 16 , and the arc-shaped pressing plates 17 compact the soil discharged by the spiral blades 48 to stabilize the ditch body.

[0039] An adjustment shaft 57 is provided between the transmission shaft 34 and the gear shaft 39 . Two ends of the adjustment shaft 57 are respectively connected to the first universal joint 35 and the second universal joint 37 . The other end of the first universal joint 35 is connected to the transmission shaft 34 , and the other end of the second universal joint 37 is connected to the gear shaft 39 .

[0040] There are changes in angle and length between the transmission shaft 34 and the gear shaft 39. The first universal joint 35 and the second universal joint 37 adjust the angle, and the adjustment shaft 57 adjusts the distance, so as to achieve smooth transmission.

[0041] The first bearing seat 40 and the second bearing seat 45 are respectively installed on the front and rear ends of the gear shaft 39, and bearings are installed at the contact point between the gear shaft 39 and the bearing seats. The bearing in the first bearing seat 40 adjacent to the second universal joint 37 is preferably an angular contact bearing.

[0042] The first bearing seat 40 and the second bearing seat 45 are connected to the top plate 15 or the layer plate 38 by welding.

[0043] Figure 4 As shown in the figure, the first gear 41 meshes with the third gear 43, the third gear 43 is mounted with a sprocket shaft 55, and the sprocket shaft 55 is provided with a first sprocket 49; the flip shaft 52 below the layer plate 38 is provided with a flip blade 53 and a second sprocket 50, and the first sprocket 49 and the second sprocket 50 are connected by a chain 51 that penetrates the layer plate 38. The sprocket shaft 55 is installed in the fourth bearing seat 54 through a bearing connection, and the fourth bearing seat 54 is welded to the top plate 15 or the layer plate 38;

[0044] One end of the sprocket shaft 55 is installed in the guard plate 59 through a bearing connection, so that the sprocket shaft 55 has two spaced fulcrums to form a stable transmission.

[0045] The working principle of this utility model:

[0046] First, start the engine 12, adjust the first cylinder 26, the second cylinder 28, and the third cylinder 36 of the cylinder group to contract, so that the top plate 15 and the excavation assembly below the top plate 15 are lifted off the ground, and the control console 13 is operated to drive to the target area, and then adjust the cylinder group to extend the first cylinder 26, the second cylinder 28, and the third cylinder 36, so that the excavation assembly naturally contacts the ground, and the flip blade 53 implements the excavation of the ground. As the excavated trench deepens, adjust the cylinder group to extend again, and lower the excavation assembly until it reaches the appropriate position. During the excavation process of the flip blade 53, the spiral blade 48 refines and guides the excavated soil, the arc-shaped pressure plate 17 compacts the refined soil, the baffle 16 collects the soil inside the excavated trench body, and gathers it in the spiral area for easy discharge, and the baffle 16 shapes the excavated trench body to prevent collapse.

[0047] The utility model uses the above embodiments to illustrate the technical concept of the utility model, but the utility model is not limited to the above embodiments, that is, it does not mean that the utility model must rely on the above embodiments to be implemented. Those skilled in the art should understand that the relevant improvements to the utility model fall within the protection scope and disclosure scope of the utility model.

Claims

1. A trenching device for improving a latent rice field, comprising a frame (11), a wheel (14) mounted on the frame (11), an engine (12) and a control console (13) mounted at the front of the frame (11), It is characterized in that The output end of the engine (12) is connected to a transmission shaft (34), which extends to the rear end of the frame (11). The rear end of the frame (11) is provided with an extension assembly (56), which is connected to a top plate (15). A layer plate (38) is connected below the top plate (15) via a guard plate (59). A gear shaft (39) is rotatably connected between the top plate (15) and the layer plate (38) via a bearing seat. One end of the gear shaft (39) is connected to the transmission shaft (34) via an adjustment shaft (57), and a second gear (42) is installed at the other end of the gear shaft (39). A first gear (41) is installed on the layer plate (39), the first gear (41) is meshed with a third gear (43), a sprocket shaft (55) is installed on the third gear (43), and a first sprocket (49) is provided on the sprocket shaft (55); a flip shaft (52) is provided below the layer plate (38), a flip blade (53) and a second sprocket (50) are provided on the flip shaft (52), and the first sprocket (49) and the second sprocket (50) are driven by a chain (51) that penetrates the layer plate (38); the second gear (42) is meshed with a fourth gear (44), and a spiral assembly (58) is installed on the fourth gear (44).

2. The trenching device for improving latent rice fields according to claim 1, It is characterized in that The extension assembly (56) comprises a first support rod (20), a second support rod (23), a first fixing frame (25) and a second fixing frame (27) fixedly mounted on the rear portion of the frame (11); two ends of the first support rod (20) are respectively connected to the top plate (15) and the frame (11) via ear plates; two ends of the second support rod (23) are respectively connected to the top plate (15) and the frame (11) via ear plates; a first cylinder (26) is connected between the first fixing frame (25) and the first support rod (20); and a second cylinder (28) is connected between the second fixing frame (27) and the second support rod (23).

3. The trenching device for improving latent rice fields according to claim 2, It is characterized in that The ear plate connecting the first support rod (20) and the top plate (15) is the first ear plate (19), and the ear plate connecting the second support rod (23) and the top plate (15) is the third ear plate (22); the ear plate connecting the first support rod (20) and the frame (11) is the second ear plate (21), and the ear plate connecting the second support rod (23) and the frame (11) is the fourth ear plate (24).

4. The trenching device for improving latent rice fields according to claim 3, It is characterized in that An arch frame (18) is fixedly arranged on the top plate (15), a fifth ear plate (32) is welded on the arch frame (18), the fifth ear plate (32) is located between the first ear plate (19) and the third ear plate (22), a fixing plate (30) is welded at the rear of the frame (11), the fixing plate (30) is located between the first fixing frame (25) and the second fixing frame (27), and a third cylinder (31) is connected and installed between the fixing plate (30) and the fifth ear plate (32).

5. The trenching device for improving latent rice fields according to claim 1, It is characterized in that The adjusting shaft (57) comprises an adjusting sleeve (36), and a first universal joint (35) and a second universal joint (37) are respectively mounted on both ends of the adjusting sleeve (36).

6. The trenching device for improving latent rice fields according to claim 1, It is characterized in that The spiral assembly (58) comprises a spiral shaft (47) mounted on the fourth gear (44), the spiral shaft (47) passes through the layer plate (38), a third bearing seat (46) is arranged on the layer plate (38), and a spiral blade (48) is installed on the spiral shaft (47) below the layer plate (38).

7. The trenching device for improving latent rice fields according to claim 6, It is characterized in that A baffle (16) is installed on one side of the spiral blade (48), the baffle (16) is located in a direction away from the frame (11), and arc-shaped pressure plates (17) are arranged on the upper parts of both sides of the baffle (16).

8. The trenching device for improving latent rice fields according to claim 1, It is characterized in that Guard plates (59) are provided on both sides of the top plate (15), and the guard plates (59) extend to the bottom of the layer plate (38). Both ends of the turning shaft (52) are connected and installed in the guard plates (59) on both sides through bearings.