Efficient soil crushing driving harrow

Abstract

The invention provides an efficient soil crushing driving harrow. The driving harrow comprises a rack, a suspension, a gearbox, a gearbox and harrow teeth. The gearbox comprises a first bevel gear and a second bevel gear which are opposite in rotating direction. The gear box comprises a third bevel gear meshed with the first bevel gear, a fourth bevel gear meshed with the second bevel gear, at least one solid shaft capable of rotating under the action of the third bevel gear and at least one shaft sleeve capable of rotating under the action of the fourth bevel gear, and the shaft sleeve is arranged on the corresponding solid shaft in a sleeving mode; the rotating directions of the two are opposite; the harrow teeth comprise soil crushing harrow teeth connected with the solid shaft and anti-drag harrow teeth connected with the shaft sleeve, and the anti-drag harrow teeth are coaxially arranged on the periphery of the soil crushing harrow teeth. In the combined harrow teeth, the coaxially arranged soil crushing harrow teeth and the drag reduction harrow teeth rotate reversely, and the combined harrow tooth soil crushing mode can effectively improve the soil crushing effect of the driving harrow.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, in particular to a high-efficiency soil-breaking driving harrow. Background Art

[0002] Tillage can loosen the soil, restore the soil aggregate structure, and create good soil conditions for the growth and development of crops. It is an important part of agricultural production. Conventional tillage and land preparation operations include two parts: tillage and land preparation. At present, tillage mainly uses a moldboard plow. After the moldboard plow is used, the soil is in a strip-shaped soil shape, and land preparation is still required. At present, land preparation operations mainly use rotary tillers or disc harrows and other land preparation machines. Rotary tillers include vertical rotary tillers and horizontal rotary tillers.

[0003] Vertical rotary tiller, also known as drive harrow, is a land preparation machine that mainly relies on the tractor power output shaft to transmit power to the vertical shaft of the drive harrow teeth to drive the harrow teeth to rotate. Since the harrow teeth rotate around the vertical shaft, they have the characteristics of not destroying the soil structure stratification. In addition, compared with horizontal rotary tillers, drive harrows also have the advantages of strong soil crushing ability, large operating depth, and good compaction and moisture retention effect. In recent years, with the development of domestic high-horsepower tractors and the continuous improvement of land preparation quality requirements, drive harrows have been increasingly used.

[0004] However, the current driving harrow structure is that the tractor power output shaft drives one or more gears in the gear transmission box through the driving harrow gearbox. The internal structure of the gear transmission box is a row of meshing gears. The meshing of the gears realizes power transmission, and each gear drives a single set of harrow teeth to rotate, thereby realizing the driving harrow operation. Although the single harrow tooth has a simple structure, it has limited effect on soil crushing, resulting in poor soil crushing effect, which in turn affects the surface flatness after harrowing. Summary of the invention

[0005] In order to solve the deficiencies in the prior art and improve the soil crushing rate of the driving rake and the surface flatness after rake, the present invention provides a high-efficiency soil crushing driving rake. The gear box adopts two rows of meshing gears to realize the separate transmission of the combined rake teeth. The combined rake teeth are composed of drag-reducing rake teeth on the outer ring and soil-crushing rake teeth on the inner ring. The drag-reducing rake teeth and the soil-crushing rake teeth rotate coaxially and in opposite directions. The present invention adopts the operation mode of combining drag-reducing rake teeth and soil-crushing rake teeth to effectively improve the soil crushing effect of the driving rake. Compared with the traditional driving rake structure, under the same working conditions, the single rake tooth of the present invention has less resistance, which is beneficial to prolonging the service life of the driving rake. In addition, the drag-reducing rake teeth and the soil-crushing rake teeth are driven independently, and different speed combinations can be realized to adapt to complex and changeable soil environments.

[0006] In order to achieve the above object, the specific scheme adopted by the present invention is: An efficient soil crushing drive rake comprises a frame, the frame is provided with a suspension for driving the rake to be connected to a tractor, a gearbox arranged on the frame, a gearbox drivingly connected to the gearbox, and rake teeth connected to the gearbox; The gearbox includes a power input shaft connected to the tractor PTO shaft, a first cylindrical gear coaxially rotating with the power input shaft, a second cylindrical gear meshing with the first cylindrical gear, a first bevel gear coaxially rotating with the second cylindrical gear, a third cylindrical gear meshing with the second cylindrical gear, and a second bevel gear coaxially rotating with the third cylindrical gear; The gearbox comprises a third bevel gear meshing with the first bevel gear, a fourth bevel gear meshing with the second bevel gear, at least one real shaft rotatable under the action of the third bevel gear, and at least one shaft sleeve rotatable under the action of the fourth bevel gear, wherein the shaft sleeve is sleeved on the corresponding real shaft, and the two shaft sleeves rotate in opposite directions; The rake teeth include soil-crushing rake teeth connected to the real shaft and drag-reducing rake teeth connected to the shaft sleeve. The drag-reducing rake teeth are coaxially arranged on the periphery of the soil-crushing rake teeth.

[0007] Furthermore, the gear box is provided with a plurality of real shafts, each real shaft is provided with a fourth cylindrical gear, the fourth cylindrical gears on two adjacent real shafts are meshed, and the third bevel gear is connected to one of the real shafts. When the third bevel gear rotates, it can drive all the real shafts to rotate.

[0008] Furthermore, each real shaft is provided with a sleeve, each sleeve is provided with a fifth cylindrical gear, the fifth cylindrical gears on two adjacent sleeves are meshed, the fourth bevel gear is connected to one of the sleeves, and when the fourth bevel gear rotates, all the sleeves can be driven to rotate.

[0009] Furthermore, a pressing roller for pressing and leveling the ground surface is connected to the frame via a connecting frame. The pressing roller is arranged behind the rake teeth, and a protruding structure is provided on the surface of the pressing roller.

[0010] Furthermore, a soil leveler connected to the pressing roller is provided between the pressing roller and the rake teeth.

[0011] Furthermore, the cutting edges of the soil crushing rake teeth are serrated.

[0012] Furthermore, the cutting edge cross-section of the drag reducing rake tooth is wedge-shaped.

[0013] Furthermore, soil retaining plates are provided on the left and right sides of the frame to prevent the turned-up soil from leaking out.

[0014] Beneficial effects: (1) The high-efficiency soil crushing drive rake proposed in the present invention has the performance of high-efficiency soil crushing. The combined rake teeth of drag-reducing rake teeth and soil-crushing rake teeth are used to improve the soil crushing ability. The drag-reducing rake teeth first contact the soil on the outside to cut off the soil blocks, and then the larger soil blocks cut off are crushed under the rotation of the soil-crushing rake teeth. The serrated blade line of the soil-crushing rake teeth can make the soil more finely crushed. In addition, the present invention uses two pairs of bevel gears to mesh so that the soil-crushing rake teeth and the drag-reducing rake teeth can achieve the effect of coaxial but different steering. Under the action of the rotation of the external drag-reducing rake teeth, the soil blocks follow the rotation of the drag-reducing rake teeth for a certain period of time. The different steering directions of the inner and outer rake teeth can make the soil blocks hit the internal soil-crushing rake teeth at a certain initial velocity, so that the large soil blocks are crushed at the moment of collision, thereby improving the soil crushing performance of the machine.

[0015] (2) The outer ring of the rake teeth of the present invention is the drag-reducing rake teeth, which first cut the soil. The cross-section of the drag-reducing rake tooth edge is a wedge-shaped cross-section, and a circular arc-shaped edge is added at the end of the rake tooth, which is more conducive to cutting the soil; the inner ring of the rake teeth is the soil-crushing rake teeth, which are smaller in size and have a serrated edge, and have a better soil-crushing effect.

[0016] (3) The rake teeth are the main wearing parts of the driving rake. Compared with the traditional driving rake structure, under the same working conditions, the single rake tooth of the present invention has smaller resistance, so the life of the rake teeth is longer. The present invention is beneficial to prolonging the life of the driving rake.

[0017] (4) The gearbox of the present invention is arranged with two rows of gears, and the drag-reducing rake teeth and the soil-breaking rake teeth are driven independently, which can realize different speed combinations and adapt to more complex and changeable soil environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is one of the three-dimensional diagrams of the efficient soil crushing drive rake in the present invention.

[0019] Figure 2 It is the second stereoscopic diagram of the efficient soil crushing driving rake in the present invention.

[0020] Figure 3 It is a schematic diagram of the structure of the gear transmission in the gearbox.

[0021] Figure 4 It is a schematic diagram of the structure of the gear transmission in the gear box.

[0022] Figure 5 It is a schematic diagram of the structure of the rake teeth.

[0023] Figure 6 It is a simplified transmission diagram of a high-efficiency soil crushing drive rake.

[0024] Figure numerals: 1, frame, 2, suspension, 3, gearbox, 301, first cylindrical gear, 302, power input shaft, 303, second cylindrical gear, 304, first bevel gear, 305, third cylindrical gear, 306, second bevel gear, 4, connecting frame, 5, earth retaining plate, 6, gearbox, 601, fourth cylindrical gear, 602, real shaft, 603, third bevel gear, 604, fourth bevel gear, 605, fifth cylindrical gear, 606, bushing, 7, rake teeth, 701, soil crushing rake teeth, 702, drag reducing rake teeth, 8, pressure roller, 9, soil leveler. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it is necessary to understand that the terms "upper" and "lower" etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0027] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0028] The present invention provides a highly efficient soil crushing drive rake, please refer to Figure 1 and Figure 2 The driving rake includes a frame 1, a suspension 2, a gearbox 3, a connecting frame 4, a retaining plate 5, a gear box 6, rake teeth 7, a pressing roller 8, and a soil leveler 9.

[0029] Please refer to Figure 3The gearbox 3 includes a first cylindrical gear 301, a power input shaft 302, a second cylindrical gear 303, a first bevel gear 304, a third cylindrical gear 305, and a second bevel gear 306. The gearbox 3 adjusts and transmits the input power through gear meshing transmission. The first bevel gear 304 and the second cylindrical gear 303 rotate coaxially, and the second bevel gear 306 and the third cylindrical gear 305 rotate coaxially, and transmit the power to the third bevel gear 603 and the fourth bevel gear 604 respectively. The gearbox 3 can change the input power of the tractor PTO shaft, and can adjust the parameters of the internal gears according to the calculation of the speed and transmission ratio.

[0030] The gearbox 6 includes a third bevel gear 603 meshed with the first bevel gear 304, a fourth bevel gear 604 meshed with the second bevel gear 306, at least one real shaft 602 capable of rotating under the action of the third bevel gear 603, and at least one shaft sleeve 606 capable of rotating under the action of the fourth bevel gear 604, wherein the shaft sleeve 606 is sleeved on the corresponding real shaft 602, and the two have opposite directions; the third bevel gear 603 and the fourth bevel gear 604 transmit power to the fourth cylindrical gear 601 and the fifth cylindrical gear 605 respectively, and according to the gear meshing, the fourth cylindrical gear 601 and the fifth cylindrical gear 605 continue to transmit the power.

[0031] Specifically, please refer to Figure 4 , the gear box 6 is provided with a plurality of real shafts 602, each real shaft 602 is provided with a fourth cylindrical gear 601, the fourth cylindrical gears 601 on two adjacent real shafts 602 are meshed, the third bevel gear 603 is connected to one of the real shafts 602, when the third bevel gear 603 rotates, under the action of the fourth cylindrical gear 601, all the real shafts 602 can rotate. Each real shaft 602 is equipped with a sleeve 606, each sleeve 606 is provided with a fifth cylindrical gear 605, the fifth cylindrical gears 605 on two adjacent sleeves 606 are meshed, the fourth bevel gear 604 is connected to one of the sleeves 606, when the fourth bevel gear 604 rotates, it can drive all the sleeves 606 to rotate.

[0032] Please refer to Figure 5 The rake teeth 7 include soil crushing rake teeth 701 connected to the real shaft 602 and drag reducing rake teeth 702 connected to the shaft sleeve 606, and the drag reducing rake teeth 702 are arranged on the periphery of the soil crushing rake teeth 701. The drag reducing rake teeth 702 rotate on the outer circle to cut off soil blocks, and the cut soil blocks are crushed by the soil crushing rake teeth 701. The combination of the two rake teeth can achieve the drag reduction effect of the machine and ensure the soil crushing performance of the machine.

[0033] The suspension 2 is connected to the frame 1, and the retaining plates 5 are connected to both sides of the frame. When the harrow is driven to perform tillage or land preparation operations, the retaining plates can effectively block the turned-up soil and prevent it from leaking out, thereby ensuring that the soil can be evenly distributed in the field and improving the land preparation effect.

[0034] The pressing roller 8 at the rear of the device is connected to the frame 1 through the connecting frame 4. The surface of the pressing roller 8 is a convex structure, which can further compact and level the soil. This helps to eliminate large lumps and uneven parts in the soil, making the soil surface more uniform and flat.

[0035] The soil leveler 9 is connected in front of the pressing roller 8. After the rake teeth 7 act, the soil leveler 9 further levels the crushed soil to ensure that the soil particles are evenly distributed, providing a good foundation for subsequent sowing, planting and other operations.

[0036] Please refer to Figure 6The working principle of the present invention is as follows: the power of the tractor PTO shaft is transmitted to the power input shaft 302 of the gearbox 3 through a universal joint, the first cylindrical gear 301 is connected to the power input shaft 302 with a key, the power is transmitted from the first cylindrical gear 301 to the second cylindrical gear 303 meshing therewith, the first bevel gear 304 and the second cylindrical gear 303 are connected to the same shaft with a key, so the power of the second cylindrical gear 303 is transmitted to the first bevel gear 304 on one side, and the second cylindrical gear 303 and the first bevel gear 304 have the same rotation direction, and the other side is transmitted to the third cylindrical gear 305 meshing with the second cylindrical gear 303, because the second bevel gear 306 and the third cylindrical gear 305 are connected to a shaft with a key, so the second bevel gear 306 and the third cylindrical gear 305 have the same rotation direction, and because the second cylindrical gear 303 and the third cylindrical gear 305 have different rotation directions, the first bevel gear 304 and the second bevel gear 306 have opposite rotation directions. The first bevel gear 304 is meshed with the third bevel gear 603, and the power on the first bevel gear 304 is transmitted to the third bevel gear 603. Since the third bevel gear 603 and the fourth cylindrical gear 601 are keyed to the real shaft 602, the power is transmitted to the fourth cylindrical gear 601. The fourth cylindrical gear 601 is connected to the real shaft 602 to control the rotation of the real shaft. The second bevel gear 306 is meshed with the fourth bevel gear 604, and the power on the second bevel gear 306 is transmitted to the fourth bevel gear 604. Since the fourth bevel gear 604 and the fifth cylindrical gear 605 are splined to the shaft sleeve 606, the power is transmitted to the fifth cylindrical gear 605. The fifth cylindrical gear 605 is connected to the shaft sleeve 606 to control the rotation of the external shaft sleeve 606. Since the first bevel gear 304 and the second bevel gear 306 rotate in opposite directions, the soil crushing rake teeth 701 and the drag reducing rake teeth 702 rotate in the opposite direction. The drag reducing rake teeth 702 rotate on the outer circle to cut off the soil blocks, and the cut soil blocks are crushed by the soil crushing rake teeth 701. The drag reduction effect of the machine is achieved, and the soil crushing performance of the machine is guaranteed. The soil after the rake teeth 7 are acted on is smoothed by the soil leveler 9, and finally, the soil particles are more uniform and the smoothing effect is better under the action of the pressure roller 8.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any equivalent changes or modifications made according to the essence of the present invention should be included in the protection scope of the present invention.

Claims

1. An efficient soil crushing driven rake, comprising a frame (1), on which a suspension (2) is provided for facilitating the driving rake to be connected to a tractor, characterized in that: It also includes a gearbox (3) disposed on the frame (1), a gear box (6) drivingly connected to the gearbox (3), and rake teeth (7) connected to the gear box (6); The gearbox (3) comprises a power input shaft (302) connected to the PTO shaft of the tractor, a first cylindrical gear (301) coaxially rotating with the power input shaft (302), a second cylindrical gear (303) meshing with the first cylindrical gear (301), a first bevel gear (304) coaxially rotating with the second cylindrical gear (303), a third cylindrical gear (305) meshing with the second cylindrical gear (303), and a second bevel gear (306) coaxially rotating with the third cylindrical gear (305); The gear box (6) comprises a third bevel gear (603) meshing with the first bevel gear (304), a fourth bevel gear (604) meshing with the second bevel gear (306), at least one real shaft (602) rotatable under the action of the third bevel gear (603), and at least one shaft sleeve (606) rotatable under the action of the fourth bevel gear (604), wherein the shaft sleeve (606) is sleeved on the corresponding real shaft (602), and the two shaft sleeves rotate in opposite directions; The rake teeth (7) comprise soil-crushing rake teeth (701) connected to the real shaft (602), and drag-reducing rake teeth (702) connected to the shaft sleeve (606), wherein the drag-reducing rake teeth (702) are coaxially arranged on the periphery of the soil-crushing rake teeth (701).

2. The high-efficiency soil crushing driven rake according to claim 1, characterized in that: The gear box (6) is provided with a plurality of real shafts (602), each real shaft (602) is provided with a fourth cylindrical gear (601), the fourth cylindrical gears (601) on two adjacent real shafts (602) are meshed with each other, and the third bevel gear (603) is connected to one of the real shafts (602), so that when the third bevel gear (603) rotates, all the real shafts (602) can be driven to rotate.

3. The high-efficiency soil crushing driven rake according to claim 2, characterized in that: Each real shaft (602) is provided with a shaft sleeve (606), each shaft sleeve (606) is provided with a fifth cylindrical gear (605), the fifth cylindrical gears (605) on two adjacent shaft sleeves (606) are meshed with each other, the fourth bevel gear (604) is connected to one of the shaft sleeves (606), and when the fourth bevel gear (604) rotates, it can drive all the shaft sleeves (606) to rotate.

4. The high-efficiency soil crushing drive rake according to claim 1, characterized in that: A pressing roller (8) for pressing and leveling the ground surface is connected to the frame (1) via a connecting frame (4); the pressing roller (8) is arranged behind the rake teeth (7); and a protruding structure is provided on the surface of the pressing roller (8).

5. The high-efficiency soil crushing driven rake according to claim 4, characterized in that: A soil leveler (9) connected to the pressing roller (8) is provided between the pressing roller (8) and the rake teeth (7).

6. The high-efficiency soil-breaking driven rake according to claim 1, characterized in that: The cutting edge of the soil crushing rake tooth (701) is serrated.

7. The high-efficiency soil-breaking driven rake according to claim 1, characterized in that: The cutting edge cross section of the drag reducing rake tooth (702) is wedge-shaped.

8. The high-efficiency soil-breaking driven rake according to claim 1, characterized in that: Soil retaining plates (5) are provided on the left and right sides of the frame (1) to prevent the turned-up soil from leaking out.

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