CN205040177U - Move stationary knife straw and smash stubble -cleaning rotary cultivator - Google Patents

Abstract

The utility model belongs to the technical field of the stubble -cleaning rotary cultivator is smashed to the straw, in particular to move stationary knife straw and smash stubble -cleaning rotary cultivator. The crushing stubble -cleaning device of this rotary cultivator including move rotor (9), move sword (8 -1), stationary knife mount pad (2) and stationary knife (8 -2), wherein move sword (8 -1) and install on moving rotor (9), stationary knife (8 -2) is fixed on stationary knife mount pad (2), every move sword (8 -1) and aim at the installation in opposite directions rather than corresponding stationary knife (8 -2), process stationary knife (8 -2) and the shear effect who moves sword (8 -1), straw and root stubble are smashed, drop on the earth's surface, pass through the shallow rotary tillage of rotary blade (6) afterwards, by kibbling straw and soil homogeneous mixing, the rotational speed that wherein moves rotor (9) is 200 -300rmin, the rotational speed of rotary tillage rotor (7) is 150 -250rmin, its rotational speed obviously reduces, energy consumption is reduced, the machine part life -span has been improved.

Description

A rotary cultivator with movable and fixed blades for crushing and removing stubble

technical field

The utility model belongs to the technical field of a straw crushing and stubble removal rotary tiller, in particular to a straw crushing and stubble removal rotary tiller with a movable and fixed knife.

Background technique

After the crops are harvested, a large amount of straw is produced. When sowing wheat after corn harvest, corn stubble and a large amount of straw on the surface lead to poor sowing quality of wheat, or even failure to sow. Farmers generally use ordinary rotary tillers to plow the land twice to basically meet the requirements for wheat sowing. The number of times that the machine goes down to the ground increases the degree of soil compaction, and wastes time, which has an adverse effect on the growth of wheat. The traditional farming method is to use the plow to plow the cultivated land again. This method exposes the soil, aggravates the damage to the soil caused by wind erosion and water erosion, and destroys the soil structure. In order to save trouble, farmers in some areas burn straws on the spot, which not only causes serious pollution, but also has many potential safety hazards, and wastes the beneficial ingredients in straws.

Among the straw utilization technologies, the most direct one is the straw crushing and returning technology. In order to ensure the sowing of the next crop, the crushed straw is usually buried or mixed into the soil. The rotary tiller can mix soil and straw, and has the characteristics of good soil cutting effect and strong soil crushing ability, and is widely used. However, in actual use, the rotary tiller also has certain problems, such as missing tillage and poor stubble breaking ability, which leads to two times of rotary tillage to meet the sowing conditions.

Patent CN1589598A discloses a straw returning and root stubble crushing combined operation machine, which can complete straw returning and root stubble crushing at one time. The combined operation machine has two cutter rollers, the field returning knife roller and the stubble cutter roller. The stubble is crushed by rotary tillage, and the crushed straw and root stubble are mixed into the soil. Although this machine tool can complete the functions of crushing straw, crushing stubble and returning straw to the field at one time, due to the high-speed rotation of the returning knife roller, the energy consumption is high and the knife is easily damaged. Patent CN101283640A discloses a straw milling rotary tiller, which first fixes the straw on the surface, and then uses a rotary tiller to perform rotary tillage, which can crush the straw better, but it needs to install a roller and a tractor with more horsepower. cause soil compaction. Patent CN101720577A discloses a corn stalk returning rotary tiller. The concept of a small corn stalk returning rotary tiller is proposed. It cooperates with a walking tractor and has a pressing wheel at the rear end. There are no arms at both ends of the rotary tiller shaft, which is not easy The phenomenon of straw dragging occurs. But at present in plain areas, walking tractors are gradually being replaced by large tractors, and this kind of rotary tiller suitable for walking tractors will be gradually replaced by rotary tillers driven by high horsepower. Therefore, there is a need for a wide-width rotary cultivator that is suitable for a large amount of straw, a small amount of ground breaking, and low energy consumption.

Utility model content

The utility model provides a rotary cultivator for crushing and removing stubble with movable and fixed knives to solve the problems of large soil structure damage and high energy consumption existing in the existing straw returning rotary cultivator.

A rotary cultivator for crushing and removing stubble with movable and fixed knives, the two ends of the frame 5 are respectively connected to the side plates 13 on the corresponding sides, the middle gear box 4 is fixed on the frame 5, and the left gear box 12 and the right gear box 14 are respectively installed On the side plate 13 of the corresponding side, one end of the rotary tiller roller 7 is connected with the drive of the right gear box 14, and the other end is connected with the side plate 13 of the corresponding side, and the rotary tiller roller 7 is provided with the rotary tiller 6, especially Yes, the stubble removal device includes a moving knife roller 9, a moving knife 8-1, a fixed knife mounting seat 2 and a fixed knife 8-2; the moving knife 8-1 is installed on the moving knife roller 9, and one end of the moving knife stick 9 is connected to the left gear The drive of the box 12 is connected, and the other end is connected with the side plate 13 of the corresponding side; the fixed knife 8-2 is fixed on the fixed knife mounting seat 2, and the two ends of the fixed knife mounting seat 2 are connected with the side plate 13 of the corresponding side respectively; , each moving knife 8-1 is aligned with its corresponding fixed knife 8-2, so that the moving knife 8-1 and the fixed knife 8-2 have a shearing effect.

Preferably, both the movable knife 8-1 and the fixed knife 8-2 are plane knives, and the blades are located at the concave curves of the knives.

The fixed knife installation seat 2 is provided with a fixed knife installation bracket 2-1, and the fixed knife 8-2 is installed on the fixed knife installation bracket 2-1, and the distance between adjacent fixed knives 8-2 is 40-90mm, preferably 60mm .

Preferably, the movable knives 8-1 are regularly arranged on the movable knife roller 9 according to one or more helical lines, and the rotary tiller blades 6 are regularly arranged on the rotary tiller roller 7 according to one or more helical lines.

The above-mentioned rotary cultivator for crushing and removing stubble with movable and fixed knives is installed on the tractor through a three-point suspension device (including the suspension device 1 and the hole on the top cover of the intermediate gear box 4 ). The power of the tractor is transmitted to the input shaft 3 through the universal joint, and through the bevel gear transmission in the intermediate gear box 4, the power is transmitted to the left gear box 12 and the right gear box 14 through the left output shaft 11 and the right output shaft 10 respectively. The left gear box 12 transmits power to the movable knife roller 9, and the right gear box 14 transmits power to the rotary blade roller 7. When the movable and fixed knife stalk crushing stubble removal rotary tiller was operating in the field, the movable knife roller 9 rotated at a speed of 200-300r/min, preferably at a speed of 250r/min, and the movable knife 8-1 entered the soil and counter-rotated (with the tractor The rotation direction of the tire is opposite), pick out the root stubble in the soil and the straw on the ground surface, and transport them to the position of the fixed knife 8-2, after the shearing action of the fixed knife 8-2 and the moving knife 8-1, the straw and root The stubble is crushed and falls to the surface. Then, through the shallow rotary tillage of the rotary tiller 6, the crushed stalks are evenly mixed with the soil, wherein the rotating speed of the rotary tiller roller 7 is 150-250r/min, preferably 200r/min.

The beneficial effects of the utility model are:

1. The utility model proposes a rotary cultivator for crushing and removing stubble with movable and fixed blades. The rotating speed of the crushing blade is low, energy consumption is reduced, and the service life of mechanical parts is long.

2. The straw returning efficiency of the utility model is high. After the stubble and the straw are crushed by the crushing blade, the rotary tiller roller will perform rotary tillage on the ground, which can fully mix the soil and the straw. It has little negative impact on the sowing of the next crop, and is an effective protective tillage tool.

3. The crushing knife of the utility model is installed on the crushing knife roller and the fixed knife mounting seat, that is, the moving knife and the fixed knife are the same, which reduces the types of mechanical parts, and the moving and fixed knives can be interchanged, which is convenient for manufacturing and maintenance. The manufacturing and processing technology is simple, which is beneficial to popularization and application.

Description of drawings

Fig. 1 is a cross-sectional view of a rotary cultivator for crushing stubble with movable and fixed blades of the utility model;

Figure 2a-b is a schematic diagram of the whole machine from different angles of view of a rotary cultivator with movable and fixed blades for crushing stubble and removing stubble according to the utility model;

Figure 3a-b is a fixed knife mounting seat of a rotary cultivator with a movable and fixed knife for crushing and removing stubble of the utility model; Figure 3a is a side view, and Figure 3b is a main view;

Fig. 4 is a schematic diagram of a rotary tiller (fixed knife) with a movable and fixed knife for crushing and removing stubble of the utility model;

Fig. 5 is a schematic diagram of the installation method of a rotary tiller with a movable and fixed knife for straw crushing and stubble removal in the utility model on the movable knife roller;

Description of symbols: 1-suspension device, 2-fixed knife mounting seat, 2-1-fixed knife mounting bracket, 3-input shaft, 4-intermediate gear box, 5-frame, 6-rotary tiller, 7-rotary tiller Knife roller, 8-1-moving knife, 8-2-fixed knife, 9-moving knife roller, 10-right output shaft, 11-left output shaft, 12-left gearbox, 13-side plate, 14-right gear box.

detailed description

The utility model provides a rotary cultivator for crushing and removing stubble with movable and fixed knives. The utility model will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be emphasized that the following descriptions are only illustrative, not intended to limit the scope of the present utility model and its application.

As shown in Fig. 1 and Fig. 2a-b, both ends of the frame 5 are respectively welded to the side plates 13 on the corresponding sides. The intermediate gear case 4 is fixed on the frame 5 with bolts. Left gear case 12, right gear case 14 are installed on the side plate 13 of corresponding side with bolt respectively. One end of the rotary tiller roller 7 is connected with the drive of the right gear box 14 , and the other end is connected with the corresponding side plate 13 , and the rotary tiller roller 7 is provided with a rotary tiller 6 . The crushing stubble removal device comprises a moving knife roller 9, a moving knife 8-1, a fixed knife mounting seat 2 and a fixed knife 8-2. One end of the moving knife stick 9 is connected with the drive of the left gear box 12, the other end is connected with the side plate 13 of the corresponding side, and the two ends of the fixed knife mounting seat 2 are connected with the side plate 13 of the corresponding side respectively. As shown in Figure 1 and Figure 5, the moving knife 8-1 is installed on the moving knife roller 9 by bolts; as shown in Figure 1 and Figure 3a-b, the fixed knife 8-2 is installed on the fixed knife mounting seat 2 by bolts On the fixed knife mounting bracket 2-1, the distance between adjacent fixed knife mounting brackets 2-1 is 60 mm; each moving knife 8-1 is aligned with its corresponding fixed knife 8-2. Both the rotary tiller roller 7 and the movable cutter roller 9 adopt disc-type cutter holders, and the movable cutter 8-1 and the fixed cutter 8-2 both adopt flat cutters, as shown in Figure 4, the blade is located at the concave curve of the cutter, and the thickness of the flat cutter is is 5mm, and the rotary tiller adopts a conventional rotary tiller. The movable knife 8-1 is regularly arranged on the movable knife roller 9 according to 3 helical lines, and the rotary tiller 6 is regularly arranged on the rotary tiller roller 7 according to 6 helical lines.

A rotary cultivator for crushing and removing stubble with movable and fixed knives is installed on a tractor through a three-point suspension device (including the suspension device 1 and the hole on the top cover of the middle gear box 4 ). The power of the tractor is transmitted to the input shaft 3 through the universal joint, and through the bevel gear transmission in the intermediate gear box 4, the power is transmitted to the left gear box 12 and the right gear box 14 through the left output shaft 11 and the right output shaft 10 respectively. The left gear box 12 transmits power to the movable knife roller 9, and the right gear box 14 transmits power to the rotary blade roller 7. When the movable and fixed knife straw crushing and stubble removal rotary tiller is working in the field, the movable knife roller 9 rotates at a speed of 250r/min, and the movable knife 8-1 enters the soil and rotates reversely (opposite to the rotation direction of the tractor tire), and the The root stubble and the straw on the ground surface are picked out and transported to the position of the fixed knife 8-2. After the shearing action of the fixed knife 8-2 and the moving knife 8-1, the straw and the root stubble are crushed and fall on the ground surface. Then, through the shallow rotary tillage of the rotary tiller 6, the pulverized straw is uniformly mixed with the soil, wherein the rotating speed of the rotary tiller roller 7 is 200r/min.

The above is only a specific implementation of the utility model patent, but the scope of protection of the patent is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this patent. should be covered within the protection scope of this patent.

Claims (4)

1. A rotary cultivator for crushing and removing stubble with movable and fixed knives. Both ends of the frame (5) are respectively connected to the side plates (13) on the corresponding sides, and the middle gear box (4) is fixed on the frame (5). The gear box (12) and the right gear box (14) are installed on the side plate (13) of the corresponding side respectively, and one end of the rotary tiller roller (7) is connected with the drive of the right gear box (14), and the other end is connected with the corresponding side plate (13). The side plate (13) is connected, and the rotary tiller blade (6) is arranged on the rotary blade roller (7). The mounting base (2) and the fixed knife (8-2); the moving knife (8-1) is installed on the moving knife roller (9), and one end of the moving knife stick (9) is connected with the drive of the left gear box (12) , the other end is connected with the side plate (13) on the corresponding side; the fixed knife (8-2) is installed on the fixed knife mounting seat (2), and the two ends of the fixed knife mounting seat (2) are respectively connected to the side of the corresponding side Plates (13) are connected; wherein, each moving knife (8-1) is aligned with its corresponding fixed knife (8-2) and installed so that the moving knife (8-1) and the fixed knife (8-2) have Shearing effect. 2. A kind of rotary cultivator for crushing stubble with movable and fixed knife according to claim 1, characterized in that, both the movable knife (8-1) and the fixed knife (8-2) are plane knives, and the blades are located at The concave curve of the knife. 3. A kind of rotary cultivator with movable and fixed knife for crushing stubble and removing stubble according to claim 1, characterized in that, the fixed knife mounting base (2) is provided with a fixed knife mounting bracket (2-1), and the fixed knife Knife (8-2) is installed on the fixed knife mounting bracket (2-1), and the distance of adjacent fixed knife (8-2) is 40-90mm. 4. A rotary cultivator for crushing and removing stubble with movable and fixed knives according to claim 1, characterized in that the movable knives (8-1) are regularly arranged on the movable knife roller (9) according to one to a plurality of helical lines , the rotary tiller (6) is regularly arranged on the rotary tiller roller (7) according to one to a plurality of helical lines.