Powerful deep scarification shovel

Abstract

The application relates to a power deep scarification shovel and belongs to the technical field of agricultural machinery. The shovel is proposed in view of the defects of the existing farm tools in the process of plowing and driving, and comprises a main shaft and a plurality of working units arranged on the main shaft. The working units are arranged along the length direction of the main shaft and form at least one working group. The position distribution of the working group on the main shaft is optimized, so that the load generated by the working group in the cutting operation of the plowing soil on the main shaft or even the whole machine is loaded on both sides of the main shaft and kept in a balanced state, the farm tool and the traction machine are kept in a straight driving operation state at all times, and the operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of agricultural machinery, and particularly relates to a power deep scarifier. BACKGROUND

[0002] The most basic and important thing in agricultural activities is soil preparation work. Before field seeding and transplanting, the deep soil of the field is first turned up, and the shallow soil is covered down, so as to improve the soil water storage and conservation capacity and promote soil maturation. In the process of tillage, mechanical technology is usually used to realize the functions of turning, loosening, mixing and crushing the soil through the rotation of a shovel or a knife, so as to restore the soil aggregate structure, adjust the proportion of the three phases (solid, liquid and gas), and enhance the water storage and conservation function of the soil.

[0003] Generally, the tillage implement is suspended at the rear of the traction machinery, and the soil tillage work is realized by the traction of the mechanical power. Taking a rotary tiller as an example, a plurality of rotary tiller seats are usually distributed along the circumference of the rotary tiller shaft in a spiral manner, and the spiral blades are installed on the rotary tiller seats. The rotary tiller shaft drives the blades to move synchronously by rotating, so as to achieve the purpose of tillage of the blades on the soil. For example, the utility model patent CN202020345319.9 discloses a kind of anti-sticking rotary tiller roller and rotary tiller with it. The rotary tiller in the patent document is arranged on the rotary tiller shaft with a spiral angle of 25°-90°. This kind of spiral distribution mode makes the rotary tiller enter the soil for tillage in turn during the rotation of the rotary tiller shaft. However, the rotary tiller generates a lateral force during the operation process, which causes the phenomenon of deviation of the implement during the operation process. At the same time, the lateral shear force is applied to the connection part of the agricultural machine and the traction equipment, which accelerates the process of mechanical fatigue. SUMMARY

[0004] In order to overcome the defect that the existing tillage implement deviates during the tillage operation process, the present application provides a power deep scarifier. By optimizing the position distribution of the working groups on the main shaft, the load generated by the working groups during the cutting operation of the tillage soil on the main shaft or even the whole machine is loaded on both sides of the main shaft, and a balanced state is maintained, so as to ensure that the tillage implement and the traction machinery are always in a straight-line operation state, and the operation efficiency is improved.

[0005] The technical scheme adopted by the present application is that a power deep scarifier comprises a main shaft and a plurality of working units arranged on the main shaft. The working units are arranged along the length direction of the main shaft and constitute at least one working group.

[0006] Preferably, the time sequence of the working units in the working group when entering the soil is nonlinearly arranged.

[0007] Preferably, during the rotation of the main shaft, the dynamic load generated by the cutting of the working units in the working group on the soil is alternately applied to both sides of the main shaft.

[0008] Preferably, the working groups are arranged in a "H" shape, and during working, the working units in the same working group cut the soil in turn according to the working mode of left-right alternately entering the soil.

[0009] Preferably, the rotation tracks of all the working units in the same working group during one rotation cycle of the main shaft continuously cover the working surface.

[0010] Preferably, the working groups are arranged in a ring array around the main shaft.

[0011] Preferably, each working unit is fixed to the main shaft through a connecting part with a bending part, and two working units in the same ring array between adjacent working groups are arranged in a left-right staggered manner through the connecting part.

[0012] Preferably, the bending part includes a first bending part for adjusting the angle of the working unit entering the soil, and the first bending part is located in the middle section of the connecting part and is bent towards the main shaft.

[0013] Preferably, the bending part further includes a second bending part formed by a secondary bending treatment of the first bending part, and the second bending part is used to adjust the overlapping range of the rotation tracks generated by the rotation of the two adjacent working units.

[0014] Preferably, the impact load generated during soil cutting is transmitted through the sliding insertion between the working unit and the connecting part.

[0015] The beneficial effects of the present application are:

[0016] 1. In the present application, the working units in the working group are arranged in a "H" shape on the main shaft, and the working units in the same working group cut the soil in turn according to the working mode of left-right alternately entering the soil, and the improved distribution of the working units makes the dynamic load generated by the cutting operation offset each other, so that the main shaft always keeps consistent with the traction equipment during working, avoiding the occurrence of the problem of deviation of the farm tool parts.

[0017] 2. In the cross section of the power deep tillage shovel, the working units are fixed to the main shaft through the connecting part with the bending part, and the left-right staggered arrangement structure is adopted, so that the two adjacent working units realize partial overlap of the rotation tracks within the same rotation cycle, and the working units in the overlapping part of the rotation tracks realize secondary turning and cutting of the soil, effectively fully mixing and scattering the waste such as straw in the soil, thereby improving the working efficiency of the deep tillage shovel and saving the energy consumption.

[0018] 3. In order to improve the service life of the farm implement parts, the application optimizes the connection mode of the working unit and the connecting part, changes the traditional cooperation mode of the bolt and the round connecting hole to the cooperation of the bolt and the waist-shaped connecting hole, simultaneously transmits the impact load generated by cutting to the connecting part and releases it through the sliding insertion between the shovel library in the working unit and the connecting part, avoids loading all the impact load on the bolt connecting the working unit and the connecting part, thereby prolonging the service life of the working unit. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the application;

[0020] Figure 2 is a position relation diagram of the main shaft and the connecting part in Example 2;

[0021] Figure 3 is a front view of Figure 2 ;

[0022] Figure 4 is a side view of Figure 2 ;

[0023] Figure 5 is a front view of the connecting part in Figure 2 ;

[0024] Figure 6 is a side view in Figure 5 ;

[0025] Figure 7 is a front view of a single connecting part in Figure 5 ;

[0026] Figure 8 is a side view in Figure 7 ;

[0027] Figure 9 is a structural schematic view of the working unit in Figure 1 ;

[0028] Figure 10 is a bottom view of Figure 9 ;

[0029] Figure 11 is a side view of Figure 9 ;

[0030] Figure 12 is a comparison diagram of the plowing layer after working and the existing plowing layer, wherein a is the soil structure of the plowing layer after working of the application, and b is the soil structure of the plowing layer after working of the existing plow cultivator;

[0031] Wherein: 1 main shaft, 2 connecting part, 201 first bending part, 202 second bending part, 203 reinforcing rib, 3 operation group, 301 operation unit, 3011 bending part, 3012 straight part, 302 shovel library, 303 connecting hole. DETAILED DESCRIPTION

[0032] The application discloses a power deep loosening shovel, which is a novel farm tool component, which can be used to replace an operation cutter applied to an existing crushing mixer, rotary cultivator, soil deep loosening machine or stubble cleaner, and driving components and driving modes and agricultural machine structures are not technical problems to be solved by the application.

[0033] Embodiment 1

[0034] As shown in the drawings, the application is a power deep loosening shovel, which comprises a main shaft 1 connected with a power input device and capable of rotating and at least one operation group 3 arranged along the length direction of the main shaft 1, each operation group 3 is arranged at equal intervals, and each operation group 3 is composed of a plurality of operation units 301 arranged on the main shaft 1. Figure 1 The outer contour of the main shaft 1 body can be polygonal or cylindrical structure. At least one connector for torque transmission connection with the upper stage transmission component is arranged at one end of the main shaft 1, and the connector preferably adopts a stepped shaft design. In order to avoid vibration as much as possible during rotation, preferably, the stepped shaft and the rotation axis of the main shaft 1 are arranged in a concentric manner. A cylindrical platform is arranged in the middle of the stepped shaft, which is used to connect with a supporting component for supporting the rotation of the main shaft 1, and the supporting component can be but is not limited to a bearing seat group.

[0035] The operation unit 301 is used to turn over the soil, and the shape thereof can be designed according to the soil operation condition, and can be but is not limited to a shovel shape, a knife shape or other deformation structures convenient for entering the soil. Each operation unit 301 is fixed on the outer periphery of the main shaft 1 in the same way, and the fixing mode can be but is not limited to welding, riveting, fixing through a connecting component or a fastener and the like.

[0036]

[0037] ​Depending on the working depth, the working unit 301 can be directly connected to the main shaft 1, or it can be connected to the main shaft 1 via the connecting part 2. When the connecting part 2 is connected to the working unit 301, the same effect of increasing the working depth can be achieved by lengthening the connecting part 2, which is equivalent to increasing the diameter of the main shaft 1. Therefore, the working depth of the power subsoiler in this embodiment is proportional to the distance between the working unit 301 and the axis of the main shaft 2. Driven by the main shaft 1, the working unit 301 rotates synchronously with the main shaft 1 for one cycle, forming a rotary trajectory. The soil area covered by the rotary trajectory is the working surface of the power subsoiler.

[0038] This embodiment takes the connection of the working unit 301 to the main shaft 1 through the connecting part 2 as an example for detailed description.

[0039] The connecting part 2 is preferably rod-shaped, with one end being a fixed end for connecting to the main shaft 1, and the other end being a free end extending outward from the main shaft 1. The end of the free end is used to connect to the working unit 301, and the working surfaces of each working unit 301 are arranged in the same direction. To facilitate the connection between the connecting part 2 and the working unit 301, the end section of the free end is preferably tapered.

[0040] During soil cutting, the stress on the working unit 301 is diffused through the connecting part 2, preventing it from concentrating on the connecting part 2 or the working unit 301, thereby reducing mechanical fatigue of structural components such as the connecting part 2 or the working unit 301. Therefore, a suitable shape and entry angle for the working unit 301 are crucial.

[0041] like Figures 9 to 11 As shown, this embodiment takes a shovel-shaped working unit 301 as an example. The working unit 301 is also fixedly provided with a shovel magazine 302 for use in conjunction with the free end of the connecting part 2.

[0042] The working unit 301 consists of a curved section 3011 and a straight section 3012. The straight section 3012 is designed to facilitate the connection between the working unit 301 and the connecting section 2, allowing stress to be quickly diffused. The curved section 3011 is a cutting end used to turn the soil, and the curved section 3012 bends towards the main shaft 1, making the longitudinal section of the working unit 301 approach a "J" shape to obtain the optimal soil penetration angle. A cutting edge is provided on the outer periphery of the cutting end; preferably, the cutting edge is arranged in a "V" shape.

[0043] The shovel magazine 302 is fixedly installed at the straight section of the working unit 301, and its bending direction is not on the same side as that of the curved section 3011. The shovel magazine 302 is a hollow cavity with an opening at at least one end, which is used to accommodate the free end of the connecting part 2. Circular connecting holes 303 are provided on both side walls of the shovel magazine 302, and bolts pass through the connecting holes 303 to be fixedly connected to the connecting part 2.

[0044] like Figures 6 to 8 As shown, to further optimize the soil penetration angle of the bent portion 3011, the middle section of the connecting portion 2 is further provided with a first bent portion 201 that bends towards the main axis 1. The bending angle of the first bent portion 201 can be linear or non-linear. In order to achieve a better stress diffusion effect, in this embodiment, the bending angle of the first bent portion 201 is preferably linear.

[0045] Example 2

[0046] In order to enable the main shaft 1 to cut and excavate the soil as much as possible through the work group 3 within one rotation cycle, thereby improving the work efficiency, this embodiment optimizes and improves the work group 3 based on the above embodiment.

[0047] like Figures 1 to 4 As shown, multiple work units 301 arranged at intervals in the same work group 3 are arranged in a "V" shape, and the length of work group 3 can be set according to the required work width. In addition, the work units 301 in the same work group 3 perform cutting, digging and other operations on the soil in a working mode of alternating left and right entry.

[0048] To improve operating efficiency, the working groups 3 are arranged in an equidistant array around the spindle 1. At the operating speed, as the number of working groups 3 arranged circumferentially increases, the variance of the resistance decreases. Therefore, the more working groups 3 arranged circumferentially, the better the cutting stability of the working groups 3. Thus, the number of working groups 3 is directly proportional to the cutting stability.

[0049] like Figure 5 As shown, the connection between the circumferentially arranged work group 3 and the outer edge of the main shaft 1 is optimized. Preferably, the work units 301 arranged in a circumferential array on the cross-section of the main shaft 1 are fixed to the main shaft 1 by connecting parts 2. The roots of the circumferentially arranged connecting parts 2 together form a ring, which is fitted and fixed to the outer wall of the main shaft 1. The improved connection method increases the connection area and structural strength between the connecting parts 2 and the main shaft 1.

[0050] Example 3

[0051] When the working unit 301 rotates synchronously with the main shaft 1 for one revolution, the path traversed by the working unit 301 in one rotation cycle forms the rotation trajectory of the working unit 301, i.e., the working surface of the working unit 301. Within the same rotation cycle of the main shaft 1, to ensure that the rotation trajectories of two adjacent working units 301 within the same working group 3 partially overlap, thus achieving collaborative operation between adjacent working units 301, this embodiment utilizes the characteristic of partial overlap between the rotation trajectories of adjacent working units 301 to perform secondary mixing or crushing of the soil, thereby optimizing the soil block diameter and reducing cutting resistance. This embodiment improves upon the above embodiment by modifying the arrangement of the working units 301.

[0052] Multiple work units 301 within the same work group 3 are distributed along the length of the main shaft 1, and the work surface of each work unit 301 is parallel to the main shaft 1.

[0053] like Figures 6 to 8 As shown, the connecting parts 2 arranged in a circumferential array on the cross section of the main shaft 1 are bent in opposite directions on two adjacent connecting parts 2, and a second curved part 202 with a certain curvature is formed on the connecting parts 2. Thus, the working units 3 are staggered by using the connecting parts 2 arranged in a circumferential array on the cross section of the main shaft 1. Figure 4 The image shows an orthographic projection view of the main shaft 1 under this layout. It can be seen that the connecting parts 2 are circumferentially distributed around the outer periphery of the main shaft 1. For easy identification, the connecting parts 2 bending in different directions are distinguished by filling. Since multiple connecting parts 2 spaced apart in the same work group 3 are arranged in a "V" shape, in the orthographic projection view, the connecting parts 2 in the same direction are presented in groups around the axial spacing, and the groups in different directions are arranged in an alternating circular array. The number of groups is the same as the number of connecting parts 2 within each group, and also the same as the number of connecting parts 2 in the same work group 3. This layout places adjacent work units 30 arranged circumferentially on two different, partially overlapping rotational trajectories on the cross-section of the main shaft 1. The overlapping rotational trajectories increase the density of the axial rotational trajectory of the power subsoiler, extend the working width of the rotational trajectory, and improve the continuity of the rotational trajectory. This allows for secondary crushing and mixing of the soil on the working surface, while also achieving complete coverage of the working surface, thus improving the working efficiency of the power subsoiler. Furthermore, by widening the width of the work unit 301 or adjusting the bending angle of the second bending portion 202, the rotational trajectories between two adjacent work units 301 arranged in a circumferential array on the cross section of the main shaft 1 can also be made to overlap.

[0054] To improve stress diffusion, a reinforcing rib 203 is provided between two adjacent connecting parts 2 arranged in a circumferential array on the cross section of the main shaft 1. The structural strength between the connecting parts 2 is improved by providing the reinforcing rib 203.

[0055] Example 4

[0056] The power deep scarifier described in the present application is a kind of agricultural tool component which relies on power input, through the rotating movement of the main shaft 1, to make the working surface of the working unit 301 continuously cut the soil. Generally, each working unit 301 will experience three stages of entering the soil, digging and stirring the soil, and taking out the soil in each rotation cycle, and the corresponding load form will also change between dynamic load and impact load in the above cycle. Such changes will inevitably be transmitted to other components of the implement through the connecting part 2 and the main shaft 1, especially the power output components such as the speed reducer, the PTO device and the engine, etc. If the alternating load changes are not continuous and linear in a cycle, it will directly affect the power output of the engine of the traction equipment, making it impossible to improve the working speed. In order to overcome the above problems, the existing design scheme usually arranges the working cutters along a spiral line around the main shaft 1, which not only allows only a single cutter to contact the soil or load impact load at a single time, but also reduces the cutting resistance. Although the single spiral structure scheme arranged along the main shaft solves the problem of load, it also produces another problem. During the movement of the traction equipment, since the cutters are arranged in a single spiral on the main shaft 1, the cutters enter the soil one by one from left to right or from right to left during the rotation of the main shaft 1. This way of entering the soil makes the cutting resistance generated by the cutters when cutting the soil accumulate on the single side of the main shaft, which forms a single lateral shear force between the main shaft 1 and the traction equipment, which constantly pushes the frame of the implement component to one side, thereby affecting the movement efficiency and working efficiency of the traction equipment.

[0057] In order to overcome this problem, the present embodiment optimizes the position of each working unit 301 in the working group 3 arranged in the shape of a "person" on the main shaft 3. During the rotation of the main shaft 1, since the working unit 301 is arranged in the shape of a "person", no matter whether it starts from the left side of the main shaft 1 or from the right side of the main shaft 1, the working unit 301 always adopts a nonlinear entering soil timing arrangement. The nonlinear entering soil timing refers to the working units 301 in the same working group 3 always enter the soil in turn in a left-right alternating manner, and preferably, the working units 301 in the same working group 3 are arranged in an equal interval manner. During the cutting process, the working units 301 in the same working group 3 enter the soil in turn in a left-right alternating cutting operation mode, and the alternating forces cancel each other out, so that the direction of the main shaft 1 operation is consistent with the direction of the traction equipment, avoiding the occurrence of the problem of deviation of the implement component. In the same working group 3, the interval of the position of the working unit 301 can be obtained according to the following equation

[0058] a = 360° / n

[0059] In the formula, n is the number of work groups arranged in a circumferential array around the main shaft, and a is the interval in degrees between work groups.

[0060] b = a / N

[0061] In the formula, N is the number of work units 301 in the same work group, and b is the angular difference in position between two work units 301 that are adjacent to enter the soil.

[0062] Preferred Example 1

[0063] Taking the left side of the main shaft 1 as the starting point, and six work groups 3 arranged circumferentially, and six work units 301 arranged in each work group 3 as an example, the positions of the work units 301 are introduced.

[0064] According to the above equation, when n is 6, a is equal to 60°, therefore, in order to facilitate the distinction, the six work groups 3 arranged circumferentially on the main shaft 1 are defined in turn as Group A, Group B, Group C, Group D, Group E, and Group F, each work group 3 is composed of work units 301 arranged in a "person" shape at equal intervals, and because N is 6, the work units 301 in Group A are defined in turn from left to right as Al, A2, A3, A4, A5, and A6, and by the same token, the same definition method is used for the other groups, see Table 1. According to the equation, when N is 6, b is equal to 10°, and because the order of the positions of the work units 301 when entering the soil is the same as the order of the positions set, this embodiment takes the position of Al as the reference 0°, sets A6 at a position 10° greater than Al, i.e. A6 is set at the 10° position, sets A2 at a position 10° greater than A6, i.e. A2 is set at the 20° position, and so on, A5 is set at the 30° position, A3 is set at the 40° position, and A4 is set at the 50° position. Because the positions of the work units 301 in the first work group 3 have been set, and each work group 3 is arranged at equal intervals of 60° circumferentially, the positions of the other work groups 3 are also relatively fixed, and according to the position of each work unit 301, the order of each work unit 301 entering the soil is also determined, see Table 1.

[0065] Table 1 Position setting and order of work units in a cycle

[0066]

[0067] From Table 1, it can be seen that in one rotation cycle of the main shaft 1, the soil entry timing of the working unit 301 always repeats the work in a non-linear soil entry mode, rather than the linear tool layout commonly used by the existing land preparation equipment, i.e. the tools of the land preparation equipment enter the soil from the left side of the main shaft 1 from left to right or from the right side of the main shaft 1 from right to left. In this embodiment, in the same working group 3, the working unit 301 always enters the soil in a left-right alternating manner, and the impact load generated by the left-right alternation cancels each other out, so that the force acting on the main shaft 1 is always balanced.

[0068] Preferred example 2

[0069] Five working groups 3 are arranged circumferentially, and six working units 301 are arranged in each working group 3.

[0070] According to the above equation, when n is 5, a is equal to 72°, therefore, the five working groups 3 are defined as group A, group B, group C, group D, and group E in turn. Since N is 6, the working units 301 in group A are defined as Al, A2, A3, A4, A5, and A6 from left to right, and the other groups are defined in the same way, as shown in Table 2. According to the equation, when N is 6, b is equal to 12°. Since the soil entry order of the working unit 301 is the same as the order of the position setting during work, in this embodiment, the position of Al is taken as the reference 0°, A6 is arranged at the position of Al plus 12°, i.e. at the position of 12°, A2 is arranged at the position of A6 plus 12°, i.e. at the position of 24°, and so on, A5 is arranged at the position of 36°, A3 is arranged at the position of 48°, and A4 is arranged at the position of 60°. Since the position of the first working group 3 has been set, and each working group 3 is arranged at an equal interval of 72° circumferentially, the position of the other working groups 3 is relatively fixed. According to the position of each working unit 301, the soil entry order of each working unit 301 is determined, as shown in Table 2.

[0071] Table 2 Position setting and soil entry order of working units in one cycle

[0072]

[0073] Preferred example 3

[0074] Five working groups 3 are arranged circumferentially, and four working units 301 are arranged in each working group 3.

[0075] According to the above equation, when n is 5, a equals 72°, thus, five groups of working groups 3 are defined as group A, group B, group C, group D, and group E in sequence, and because N is 4, the working units 301 in group A are defined as Al, A2, A3, A4 from left to right in sequence, and other groups are defined in the same way, which is shown in Table 3. According to the equation, when N is 5, b equals 18°, and because the entering order of the working units 301 is the same as the order of the set positions during working, the position of Al is taken as the reference 0° in this embodiment, A4 is set at the position of Al plus 18°, i.e., A4 is set at the position of 18°, A2 is set at the position of A4 plus 18°, i.e., A2 is set at the position of 36°, and so on, A3 is set at the position of 54°. Because the positions of the working groups 3 in the first group have been set, and the working groups 3 in each group are set at equal intervals of 72° in the circumferential direction, the positions of the working groups 3 in other groups are relatively fixed, and according to the positions of each working unit 301, the entering order of each working unit 301 is determined, which is shown in Table 3.

[0076] Table 3 Position setting and entering order table of working units in one cycle

[0077]

[0078] Example 5

[0079] Because the working units 301 cut the soil, they are most likely to be severely worn, and the main shaft 1, the connecting part 2, and the working units 301 have to be replaced as a whole, which increases the maintenance cost. Therefore, in Example 1 of the present application, the connecting part 2 and the shovel body 301 are detachably connected by bolts, which effectively solves the problem of inconvenience in replacing the working units 301 and the connecting part 2, and reduces the maintenance cost of the agricultural implement parts. However, during the cutting operation, the impact load generated between the working units 301 and the soil is concentrated on the connection between the shovel body 302 and the connecting part 2, i.e., the bolts, thus, when the load value reaches the load limit of the bolts, the bolts will be broken, which reduces the service life and the working efficiency of the parts. In this embodiment, the connection between the connecting part 2 and the shovel body 302 is optimized on the basis of the above-mentioned embodiment, so as to prolong the service life of the parts.

[0080] The connecting holes 303 opened on the two side walls of the shovel library 302 are waist-shaped holes, bolts pass through the connecting holes 303 and are fixed with the connecting part 2, and the hole diameter of the connecting holes 303 is opened along the length direction of the shovel library 302. The hollow cavity of the shovel library 302 matches the end tapered profile of the free end of the connecting part 2, and the connecting part 2 is limited by the tapered hollow cavity of the shovel library 302. After the bolt passes through the connecting hole 303, it is connected with the connecting part 2, and slides forward and backward in the hole diameter of the connecting hole 303 along the length direction of the connecting part 2. After the improvement, during the operation, the impact load generated by the soil on the operation unit 301 pushes the operation unit 301 to slide in the hole diameter of the connecting hole 303 along the length direction of the connecting part 2, and at the same time, the free end of the connecting part 2 is limited by the hollow cavity, so that the impact load is transmitted to the connecting part 2 through the shovel library 302 and is released, avoiding loading all the impact load on the bolts connecting the operation unit 301 and the connecting part 2, thereby prolonging the service life of the bolts.

[0081] The above is only the preferred embodiment of the present application, these embodiments are all different implementations based on the overall concept of the present application, and the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A power ripper shank, comprising: The main shaft (1) and a plurality of work units (301) arranged on the main shaft (1), characterized in that each work unit (301) is fixed on the main shaft (1) through a connecting part (2), the work units (301) in the same work group (3) are arranged in a "person" shape along the length direction of the main shaft (1) and form at least one work group (3), and the work groups (3) are arranged in a ring array around the main shaft (1), each work unit (301) is fixed on the main shaft (1) through the connecting part (2) with a bending part, two work units (301) on the same ring array between adjacent work groups (3) are arranged in a left-right staggered manner through the connecting part (2), the bending part includes a first bending part (201) for adjusting the soil entering angle of the work unit (301), the first bending part (201) is located at the middle section of the connecting part (2) and is bent towards the main shaft (1), and the bending part further includes a second bending part (202) formed by secondary bending treatment of the first bending part (201), the second bending part (202) is used to adjust the overlapping range of the rotation track generated by the rotation of the left and right adjacent two work units (301), the left and right adjacent two work units (301) in the same work group (3) partially overlap due to the rotation track, by widening the width of the work unit (301) or adjusting the bending angle of the connecting part (2), the soil on the work surface can be crushed and mixed twice, thereby realizing the cooperative work between adjacent work units (301); the soil entering sequence of the work units (301) in the same work group (3) is arranged in a nonlinear manner, and the work units in the same work group enter the soil in a left-right alternating work mode according to the order from both sides of the shaft to the middle, so that the force acting on the main shaft (1) is in a balanced state.

2. A power ripper shank as claimed in claim 1 wherein: During the rotation of the main shaft (1), the dynamic load generated by the work units (301) in the work group (3) cutting the soil is alternately applied to both sides of the main shaft (1).

3. A power ripper shank as claimed in claim 2 wherein: The rotation track generated by all work units (301) in the same work group (3) rotating one cycle with the main shaft (1) continuously covers the work surface.

4. A power ripper shank as set forth in claim 2, wherein: The impact load generated when cutting the soil is transmitted through the sliding insertion between the work unit (301) and the connecting part (2).

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