Vertical rotary blade

Abstract

A cutter shaft and an annular cutter head are coaxially arranged at the bottom of a cutter rest in a rotating mode, the top end of the cutter shaft upwards penetrates out of the cutter rest and is provided with a transmission part, the bottom end of the cutter shaft is provided with a soil drilling part, and a plurality of blade layers are arranged on the side wall of the cutter shaft from bottom to top at equal intervals and comprise a plurality of evenly-distributed blades A; a plurality of cutter bars are evenly distributed on the edge of the bottom of the annular cutter head, a plurality of blades C are arranged on the sides, facing the rotating direction, of the cutter bars at equal intervals from bottom to top and located above the soil drilling part, and the cutter shaft and the annular cutter head are in transmission connection through a rotating transmission device. Known from the structure, according to the vertical rotary blade disclosed by the utility model, through the soil drilling part, the blade B and the blade A which are arranged on the cutter shaft and the cutter bar and the blade C which are arranged on the annular cutter head, the soil drilling part and the blade B can be convenient for the rotary blade to drill into soil and turn out and throw up the soil, and the cutter bar and the blade C are convenient for effectively cutting the soil and throwing up the soil; and the blade A can effectively scatter the thrown soil, so that rotary tillage of the land is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a vertical rotary tillage knife. Background Technique

[0002] Cultivating land is the basis of agricultural production, and its operation effect directly or indirectly affects the subsequent agricultural production process and the growth and development of crops. Long-term no-tillage and shallow tillage of the soil will lead to the formation of a hard plow sole layer between the cultivated layer and the subsoil layer of the soil. If the plow sole layer is too thick, it will affect the growth of crop roots, hinder the crop from absorbing water and nutrients, and is not conducive to crop growth. The deep loosening and deep tillage technology can be realized through the vertical rotary tillage knife, which can effectively break the plow sole layer, improve the structure of the cultivated layer of the soil, and improve the performance of the deep soil. In addition, the soil after deep tillage has better permeability. The above effects are of great significance for increasing crop yields. However, there are also certain technical problems in deep loosening and deep tillage with a vertical rotary tillage knife. First, the soil crushing ability is poor, resulting in large soil clods being easily generated after the operation. Another problem is that since the tillage depth of the land by the vertical rotary tillage knife is thicker than that of the horizontal rotary tillage knife, it is inevitable that the power consumption of the power equipment is relatively larger to achieve, and the operation cost is relatively high. In addition, in order to ensure the soil crushing effect, another set of soil crushing devices needs to be configured with additional power, thus further increasing the equipment power consumption. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a vertical rotary tillage knife. Through the soil drilling part and blade B provided on the tool shaft, blade A, and the tool bar and blade C provided on the annular cutter head, the soil drilling part and blade B can facilitate the rotary tillage knife to drill into the soil and turn over and throw up the soil. The tool bar and blade C are convenient for effectively cutting the soil and throwing up the soil, and blade A can effectively disperse the thrown-up soil, so as to realize the rotary tillage of the land.

[0004] The technical solution adopted by the utility model is as follows:

[0005] The vertical rotary tiller comprises a knife rack for being fixedly connected to a rotary tiller, the bottom of the knife rack being coaxially rotatable around a vertical axis and being connected with a knife shaft and an annular knife disc, the knife shaft being passed through the vertical axis of the knife rack, the top end of the knife shaft passing upward out of the knife rack and being provided with a transmission part for transmitting with a rotary tiller power device of the rotary tiller, the bottom end of the knife shaft being provided with a soil drilling part, the side wall of the knife shaft being provided with a plurality of blade layers at equal intervals from bottom to top, the blade layers comprising a plurality of blades A uniformly distributed with the axis of the knife shaft as the center, a plurality of downwardly arranged knife rods being uniformly distributed with the axis of the knife shaft as the center on the bottom edge of the annular knife disc, a plurality of blades C being uniformly spaced from bottom to top on the side of the knife rod facing the rotation direction, the blade C being located above the soil drilling part, the knife shaft and the annular knife disc being transmission-connected by a rotating transmission device, the rotating transmission device being located at the top of the knife rod, and when the knife shaft and the annular knife disc rotate, the blades A and C respectively throw soil upward along their respective rotation directions.

[0006] A further improvement of the utility model is that a screw is coaxially provided at the bottom end of the cutter shaft, a screw rod is coaxially provided at the top center of the drilling part, and a threaded groove matching the screw is provided at the top center of the screw rod.

[0007] A further improvement of the present invention is that the soil drilling part is a conical structure with a top diameter larger than a bottom diameter, a blade B is provided on the side wall edge of the soil drilling part, and the blade B is arranged in a spiral rise along the conical surface of the soil drilling part.

[0008] A further improvement of the utility model is that a sleeve is coaxially fixed to the outer wall of the cutter shaft corresponding to the rotation transmission device and the drilling part, and the blades A are respectively fixed to the outer wall of the sleeve, and the sleeve and the cutter shaft are circumferentially fixedly connected by a key.

[0009] A further improvement of the present invention is that the blade A and the blade C are respectively inclined upward along their respective rotation directions, and the angle between the blade A and the horizontal plane gradually increases along the direction from the free end of the blade A to the end connected to the blade shaft, and the angle between the blade C and the horizontal plane gradually increases along the direction from the free end of the blade C to the end connected to the blade rod.

[0010] A further improvement of the present invention is that the blade C is inclined toward one side of the blade shaft along a direction away from the connected blade rod, and the blade C is inclined downward along a direction away from the connected blade rod.

[0011] A further improved solution of the present invention is that the blades C are respectively arranged between two adjacent blade layers.

[0012] A further improvement of the utility model is that the tool holder is a circular groove opening downward, an axial hole for passing the tool shaft is provided at the axial center of the groove bottom of the circular groove, a bearing sleeve A and a bearing sleeve B are provided coaxially at the top surface and bottom surface of the groove bottom corresponding to the hole edge position of the axial hole, a positioning convex ring A is provided inwardly at the connection between the bearing sleeve A and the bearing sleeve B, the bearing sleeve A and the bearing sleeve B are rotatably connected to the tool shaft through the bearing A and the bearing B respectively, an annular cover A for axially fixing the bearing A and an annular cover B for axially fixing the bearing B are fixed to the end of the bearing sleeve A away from the tool holder and the end of the bearing sleeve B away from the tool holder respectively, The annular cutter disc is rotatably connected in the annular groove formed by the circular groove and the bearing sleeve B. The inner side wall and the outer side wall of the annular cutter disc are coaxially provided with a positioning convex ring B and a positioning convex ring C respectively. The top and the bottom of the positioning convex ring B are rotatably connected to the bearing sleeve B through the bearing C and the bearing E respectively. The top and the bottom of the positioning convex ring C are rotatably connected to the groove wall of the circular groove through the bearing D and the bearing F respectively. The edge of the annular cover B extends outward to contact with the bearing E and axially fix the bearing E. The groove wall of the circular groove is fixed with an annular cover C for axially fixing the bearing F at the groove position. The cutter rod extends downward from the annular hole formed between the annular cover B and the annular cover C respectively.

[0013] A further improvement of the utility model is that the rotating transmission device includes a sun gear coaxially fixed to the cutter shaft, an inner ring gear coaxially fixed to the annular cutter disc through a cutter rod, and a plurality of planetary gears evenly distributed between the sun gear and the inner ring gear with the cutter shaft axis as the center, the sun gear is transmission connected to the inner ring gear through the planetary gears, and the planetary gears are rotationally connected to the cutter holder through a shaft.

[0014] A further improvement of the utility model is that a connecting block is fixed to the inner edge of the knife rod, and the connecting block is fixedly connected to the inner gear ring.

[0015] The beneficial effects of the utility model are:

[0016] First, the vertical rotary tiller of the utility model, through the soil drilling part and blade B and blade A provided on the cutter shaft and the cutter bar and blade C provided on the annular cutter disc, the soil drilling part and blade B can facilitate the rotary tiller to drill into the soil and turn out and throw up the soil, the cutter bar and blade C can facilitate the effective cutting of the soil and throw up the soil, and the blade A can effectively break up the thrown soil, thereby realizing rotary tillage of the land.

[0017] Second, the vertical rotary tiller of the utility model can not only break up the thrown soil through the action of the blade A, but also use the rotation inertia to throw the soil toward the blade rod and the blade C at the same time to further break up and further throw it inward.

[0018] Third, the vertical rotary tiller of the utility model can not only directly transmit power to the cutter shaft through the action of the rotating transmission device, so that the blade A and the soil drilling part of the cutter shaft can rotate at high speed, which is convenient for the rotary tiller to be inserted into the soil and the thrown soil to be effectively broken up; at the same time, it can also transmit power to the annular cutter disc, so that the cutter rod and the blade C of the annular cutter disc can rotate at a relatively low speed and high torque, so that the cutter rod and the blade C have enough force to cut and throw the land.

[0019] Fourth, the vertical rotary tiller of the utility model, the blade shaft and the annular blade disc are respectively connected to the blade holder through corresponding bearings, which not only ensures the rotation of the blade shaft and the annular blade disc, but also provides effective radial and axial support for the blade shaft and the annular blade disc relative to the blade holder, thereby improving the maximum bearing capacity of the blade shaft and the annular blade disc when working.

[0020] Fifth, the vertical rotary tiller of the utility model provides power to the cutter shaft through the transmission part, and connects the cutter shaft with the annular cutter disc through the rotating transmission device of the planetary gear structure, so there is no need to provide power to the additional soil crushing device, and only the vertical rotary tiller itself needs to be powered. Not only does it not generate additional energy consumption, but it also ensures the stability of the transmission and the uniform distribution of the speed and torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic cross-sectional view of the main view of the present application. DETAILED DESCRIPTION

[0022] like Figure 1 It can be seen that the vertical rotary tiller includes a cutter frame 1 for fixed connection with the rotary tiller, the bottom of the cutter frame 1 is coaxially connected with a cutter shaft 2 and an annular cutter disc 3 around the vertical axis, the cutter shaft 2 is penetrated at the vertical axis of the cutter frame 1, the top end of the cutter shaft 2 passes through the cutter frame 1 upwards and is provided with a transmission part 4 for transmitting with the rotary tillage power device of the rotary tiller, the bottom end of the cutter shaft 2 is provided with a soil drilling part 5, and the side wall of the cutter shaft 2 is evenly spaced from bottom to top and provided with multiple blade layers, and the blade layer includes a plurality of blades evenly distributed around the axis of the cutter shaft 2. Blade A6, a plurality of downwardly arranged cutter rods 8 are evenly distributed on the bottom edge of the annular cutter disc 3 with the axis of the cutter shaft 2 as the center, a plurality of blades C9 are evenly spaced from bottom to top on the side of the cutter rod 8 facing the rotation direction, the blade C9 is located above the soil drilling part 5, the cutter shaft 2 and the annular cutter disc 3 are connected by a rotating transmission device, and the rotating transmission device is located on the top of the cutter rod 8, when the cutter shaft 2 and the annular cutter disc 3 rotate, the blade A6 and the blade C9 respectively throw the soil upward along their respective rotation directions.

[0023] A screw rod 32 is coaxially provided at the bottom end of the tool shaft 2, a screwing rod 34 is coaxially provided at the center of the top of the soil drilling part 5, and a thread groove 33 matching the screw rod 32 is provided at the center of the top end of the screwing rod 34.

[0024] The soil drilling part 5 is a conical structure with a top diameter larger than the bottom diameter. Blade B7 is provided at the edge of the side wall of the soil drilling part 5, and the blade B7 is arranged in a spiral rising manner along the conical surface of the soil drilling part 5.

[0025] A sleeve 31 is coaxially sleeved and fixed on the outer side wall of the tool shaft 2 corresponding to the position between the rotational transmission device and the soil drilling part 5. Blade A6 is respectively fixed on the outer side wall of the sleeve 31, and the sleeve 31 and the tool shaft 2 are circumferentially fixedly connected by a key.

[0026] Blade A6 and blade C9 are respectively inclined upward along their respective rotation directions, and the angle between blade A6 and the horizontal plane gradually increases along the direction from the free end of blade A6 to the connection end with the tool shaft 2. The angle between blade C9 and the horizontal plane gradually increases along the direction from the free end of blade C9 to the connection end with the tool rod 8.

[0027] Blade C9 is inclined toward the tool shaft 2 along the direction away from the connected tool rod 8, and blade C9 is inclined downward along the direction away from the connected tool rod 8.

[0028] Blade C9 is respectively arranged between adjacent two layers of blade layers.

[0029] The tool holder 1 is a circular groove opening downward, and an axial hole 13 for passing the tool shaft 2 is provided at the axial center of the groove bottom of the circular groove, and a bearing sleeve A15 and a bearing sleeve B16 are coaxially provided at the top surface and bottom surface of the groove bottom corresponding to the hole edge position of the axial hole 13, and the axial hole 13 is provided with a positioning convex ring A17 inwardly corresponding to the connection between the bearing sleeve A15 and the bearing sleeve B16, and the bearing sleeve A15 and the bearing sleeve B16 are rotatably connected to the tool shaft 2 through bearings A18 and B19 respectively, and an annular cover A21 for axially fixing the bearing A18 and an annular cover B22 for axially fixing the bearing B19 are fixed on the end of the bearing sleeve A15 away from the tool holder 1 and the end of the bearing sleeve B16 away from the tool holder 1, respectively, and the annular cutter disc 3 rotates The annular cutter disc 3 is rotatably connected to the annular groove 14 formed by the circular groove and the bearing sleeve B16. The inner and outer side walls of the annular cutter disc 3 are coaxially provided with a positioning convex ring B23 and a positioning convex ring C24 respectively. The top and bottom of the positioning convex ring B23 are rotatably connected to the bearing sleeve B16 through a bearing C25 and a bearing E27 respectively. The top and bottom of the positioning convex ring C24 are rotatably connected to the groove wall of the circular groove through a bearing D26 and a bearing F28 respectively. The edge of the annular cover B22 extends outward to contact with the bearing E27 and axially fix the bearing E27. The groove wall of the circular groove is fixed with an annular cover C29 for axially fixing the bearing F28 at the notch position. The cutter bar 8 extends downward from the annular holes formed between the annular cover B22 and the annular cover C29 respectively.

[0030] The rotation transmission device includes a sun gear 10 coaxially fixed to the cutter shaft 2, an inner ring gear 11 coaxially fixed to the annular cutter disc 3 through a cutter rod 8, and a plurality of planetary gears 12 evenly distributed between the sun gear 10 and the inner ring gear 11 with the axis of the cutter shaft 2 as the center. The sun gear 10 is transmission-connected to the inner ring gear 11 through the planetary gears 12, and the planetary gears 12 are rotationally connected to the tool holder 1 through a shaft.

[0031] The shaft is connected to the annular cover 22 .

[0032] A connecting block 30 is fixed to the inner edge of the knife rod 8 , and the connecting block 30 is fixedly connected to the inner gear ring 11 .

[0033] The blade 35 is provided on one side of the blade 8 facing the rotation direction and on the bottom.

[0034] When this application is in use, when the rotary tillage power device of the rotary tiller is driven, the rotary tillage power device transmits power to the transmission part 4, so that the cutter shaft 2 drives the sun gear 10, the blade A 6 and the soil drilling part 5 to rotate at high speed. At the same time, the sun gear 10 drives the internal gear ring 11 to rotate at low speed through the planetary gear 12, so that the tool bar 8 drives the blade C 9 to rotate at low speed with high torque. Thus, the soil drilling part 5 can drive the vertical rotary tillage blade to drill down into the soil to be rotary tilled. At the same time, the soil is broken up and turned over upward by the blade B 7 of the soil drilling part 5. During the forward movement of the rotary tiller, the tool bar 8 rotating to the side facing the forward direction not only cuts the soil through the cutting edge 35 during rotation, but also the blade C 9 turns up or throws up a large amount of the cut soil while cutting the soil; among the soil thrown up upward, part of the soil is further broken up again when passing through the high-speed rotating blade A 6 during the rising and falling process, and is thrown outward under the centrifugal force. Then, when encountering the rotating tool bar 8 during the outward throwing process, the soil is further broken up again and partially blocked to prevent the broken-up soil from being further thrown outward, so that most of the soil remains within the rotation range of the tool bar 8, and the broken-up soil mostly stays within the circular range formed by the rotation of the tool bar 8 and forms ridges along the forward direction of the rotary tiller. The soil thrown up by the blade A 6 is further broken up again when encountering the rotating blade C 9 and is further thrown up within the rotation range of the tool bar 8, so that the soil can continue to be broken up more by the remaining blade A 6 or blade C 9, and the more broken-up soil is more easily thrown up, so that the more broken-up soil finally falls on the land surface later, and further makes the soil on the land surface looser, facilitating subsequent sowing operations. The rotary tillage depth is adjusted by selecting different sizes of the soil drilling part 5 and adjusting the vertical movement distance of the rotary tiller.

Claims

1. Vertical rotary tillage knife, characterized in that: The present invention comprises a knife frame (1) for being fixedly connected to a rotary tiller, wherein the bottom of the knife frame (1) is connected to a knife shaft (2) and an annular knife disc (3) for coaxial rotation around a vertical axis, wherein the knife shaft (2) is arranged at the vertical axis of the knife frame (1), and the top end of the knife shaft (2) passes through the knife frame (1) upwards and is provided with a transmission part (4) for transmitting with a rotary tiller power device of the rotary tiller, wherein the bottom end of the knife shaft (2) is provided with a soil drilling part (5), and the side wall of the knife shaft (2) is provided with multiple blade layers at equal intervals from bottom to top, wherein the blade layers include a plurality of blades A (6) evenly distributed around the axis of the knife shaft (2). The bottom edge of the annular cutter disc (3) is evenly distributed with a plurality of cutter rods (8) arranged downwardly with the axis of the cutter shaft (2) as the center. A plurality of blades C (9) are evenly spaced from bottom to top on the side of the cutter shaft (8) facing the rotation direction. The blades C (9) are located above the soil drilling part (5). The cutter shaft (2) and the annular cutter disc (3) are connected by a rotating transmission device. The rotating transmission device is located at the top of the cutter rod (8). When the cutter shaft (2) and the annular cutter disc (3) rotate, the blades A (6) and the blades C (9) respectively throw soil upward along their respective rotation directions.

2. The vertical rotary tillage knife according to claim 1, characterized in that: A screw rod (32) is coaxially provided at the bottom end of the cutter shaft (2), a screw rod (34) is coaxially provided at the top center of the soil drilling portion (5), and a thread groove (33) matching the screw rod (32) is provided at the top center of the screw rod (34).

3. The vertical rotary tillage knife according to claim 1, wherein: The soil drilling portion (5) is a conical structure with a top diameter greater than a bottom diameter. A blade B (7) is provided on the edge of the side wall of the soil drilling portion (5). The blade B (7) is arranged to rise in a spiral along the conical surface of the soil drilling portion (5).

4. The vertical rotary tillage knife according to claim 1, characterized in that: A shaft sleeve (31) is coaxially sleeved and fixed on the outer wall of the cutter shaft (2) corresponding to between the rotary transmission device and the soil drilling portion (5); the blades A (6) are respectively fixed to the outer wall of the shaft sleeve (31); and the shaft sleeve (31) and the cutter shaft (2) are circumferentially fixedly connected via a key.

5. The vertical rotary tillage knife according to claim 1, characterized in that: The blade A (6) and the blade C (9) are respectively inclined upward along their respective rotation directions, and the angle between the blade A (6) and the horizontal plane gradually increases along the direction from the free end of the blade A (6) to the end connected to the blade shaft (2), and the angle between the blade C (9) and the horizontal plane gradually increases along the direction from the free end of the blade C (9) to the end connected to the blade rod (8).

6. The vertical rotary tillage knife according to claim 1, wherein: The blade C (9) is inclined toward one side of the blade shaft (2) in a direction away from the connected blade rod (8), and the blade C (9) is inclined downward in a direction away from the connected blade rod (8).

7. The vertical rotary tillage blade according to claim 1, characterized in that: The blades C (9) are respectively arranged between two adjacent blade layers.

8. The vertical rotary tillage knife according to claim 1, characterized in that: The tool holder (1) is a circular groove opening downward, and an axial hole (13) for passing the tool shaft (2) is provided at the axial center of the groove bottom of the circular groove. A bearing sleeve A (15) and a bearing sleeve B (16) are coaxially provided at the top and bottom surfaces of the groove bottom corresponding to the hole edge of the axial hole (13). A positioning convex ring A (17) is provided inwardly at the connection between the bearing sleeve A (15) and the bearing sleeve B (16). The bearing sleeve A (15) and the bearing sleeve B (16) are rotatably connected to the tool shaft (2) via a bearing A (18) and a bearing B (19), respectively. An annular cover A (21) for axially fixing the bearing A (18) and an annular cover B (22) for axially fixing the bearing B (19) are fixed to one end of the bearing sleeve A (15) away from the tool holder (1) and the other end of the bearing sleeve B (16) away from the tool holder (1). The annular tool disc (3) is rotatably connected in an annular groove (14) formed by the circular groove and the bearing sleeve B (16), the inner side wall and the outer side wall of the annular cutter disc (3) are coaxially provided with a positioning convex ring B (23) and a positioning convex ring C (24), the top and the bottom of the positioning convex ring B (23) are rotatably connected to the bearing sleeve B (16) through a bearing C (25) and a bearing E (27), respectively, the top and the bottom of the positioning convex ring C (24) are rotatably connected to the groove wall of the circular groove through a bearing D (26) and a bearing F (28), respectively, the edge of the annular cover B (22) extends outward to contact with the bearing E (27) and axially fix the bearing E (27), the groove wall of the circular groove is fixed with an annular cover C (29) for axially fixing the bearing F (28) at the groove position, and the cutter bar (8) extends downward from the annular hole formed between the annular cover B (22) and the annular cover C (29).

9. The vertical rotary tillage knife according to claim 1, characterized in that: The rotation transmission device comprises a sun gear (10) coaxially fixed to the cutter shaft (2), an inner gear ring (11) coaxially fixed to the annular cutter disc (3) via a cutter rod (8), and a plurality of planetary gears (12) uniformly distributed between the sun gear (10) and the inner gear ring (11) with the axis of the cutter shaft (2) as the center, wherein the sun gear (10) is transmission-connected to the inner gear ring (11) via the planetary gears (12), and the planetary gears (12) are rotationally connected to the cutter holder (1) via a shaft.

10. The vertical rotary tillage knife according to claim 9, characterized in that: A connecting block (30) is fixed to the inner edge of the knife rod (8), and the connecting block (30) is fixedly connected to the inner gear ring (11).

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