CN206575839U - A kind of cutter and turn over and bury the spaced straw returning device of knife - Google Patents

Abstract

The utility model relates to a straw overturning and returning device in which cutting knives and overturning knives are arranged alternately. The device includes a main shaft roller and a power transmission mechanism, and a cutting device and an overturning device are alternately arranged on the main shaft roller; further, the cutting device adopts a broken line cutting knife; the overturning device adopts an arc-shaped overturning device. Bury the knife. The utility model satisfies the requirements of preventing the straw from being cut too much, making the straw overturned evenly, and reducing the power consumption of machines and tools at the same time. This device is enough to realize the operation of overturning and returning the whole stalks of rice and other straws to the field at one time, without the cooperation of other machines and tools, and ensures the smooth progress of subsequent sowing operations.

Description

A device for burying and returning straw with cutting knives and burying knives arranged alternately

technical field

The utility model belongs to the technical field of agricultural machinery, in particular to a straw burying and returning device in which cutting knives and burying knives are arranged alternately.

Background technique

Conservation tillage is an advanced agricultural farming method that implements no-tillage and less-tillage on farmland, reduces soil tillage as much as possible, and covers the surface with crop stalks and residues to reduce soil wind and water erosion, and improve soil fertility and drought resistance. Among them, the straw returning technology is an important means for the implementation of this technology, but the general straw returning device is chopped with a knife and then rotated twice by a rotary tiller. At the same time, there are problems such as serious tool wear and short life. After the operation, there are problems such as the straw is cut too much, the coverage is poor, and the power consumption is large, which affects the subsequent sowing work. Therefore, there is a need for a whole stalk overturning and returning device that can cut off the straw, has a high return rate, strong soil crushing ability, and uniform straw overturning.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides a device for burying and returning straw with cutting knives and burying knives arranged alternately.

A straw overturning and returning device with cutting knives and overturning knives arranged alternately, the device includes a main shaft roller and a power transmission mechanism, and a cutting device and an overturning device are alternately arranged on the main shaft roller.

The cutting device and the overturning device are arranged alternately on the main shaft roller, and the two ends of the main shaft roller are respectively cutting devices. Preferably, another cutting device is respectively provided outside the cutting devices at both ends.

The cutting device adopts a broken-line cutting knife; the broken-line cutting knife is composed of a second connecting part and a second cutting part, and a blade is arranged on one side of the second cutting part, and the blade is divided into three sections in sequence, the first One section of the blade is close to the connecting part, and forms an included angle of 17° with the longitudinal direction of the folding line cutting knife; the folding line cutting knife forms a folding angle at the second section of the cutting knife, and the second section of the blade is parallel to the longitudinal direction of the folding line cutting knife when it is flattened; The longitudinal direction of the three-segment blade and the broken-line cutting knife is at an angle of 28°. The folding angle of the folding line cutting knife is preferably 120°.

The broken-line cutting knives are uniformly distributed on the cutting disc along the circumference to form a cutting device, and the cutting disc is fixed on the main shaft roller. In the cutting device, the bending direction of at least one zigzag-shaped cutting knife is opposite to that of other zigzag-line-shaped cutting knives.

The embedding device adopts an arc-shaped embedding knife; the arc-shaped embedding knife is composed of a first connecting part and a first cutting part, and a blade is provided on one side of the first cutting part, and the blade is round It is arc-shaped, and the top of the first cutting part is turned inward to form an arc.

The arc-shaped overturning knives are evenly distributed on the overturning cutterhead along the circumference to form an overturning device, and the overturning cutterhead is fixed on the main shaft roller. In the overturning device, the bending direction of at least one arc-shaped overturning knife is opposite to that of other arc-shaped overturning knives.

The beneficial effects of the utility model are:

The invention satisfies the requirements of preventing the straw from being cut too much, making the straw turn over evenly, and reducing the power consumption of machines and implements. The invention adopts the technical scheme of cutting devices and overturning devices arranged alternately on the main shaft roller, effectively cutting weeds to prevent them from being wound around the journal and the main shaft roller, and effectively and evenly overturning the whole stalk. The arc-shaped turning knife is used to reduce the number of blades in the same longitudinal plane, increase the soil cutting pitch during operation, effectively reduce the power consumption of the operation, and increase the turning angle between the turning knife and the main shaft roller, which can improve the machine tool The overturning ability improves the operation quality of the machine tool; the use of the broken line cutting knife effectively reduces the cutting resistance and wear, and at the same time effectively reduces the power consumption of the operation.

This device is enough to realize the operation of overturning and returning the whole stalks of rice and other straws to the field at one time, without the cooperation of other machines and tools, and ensures the smooth progress of subsequent sowing operations, which is conducive to promoting the further promotion of conservation tillage.

Description of drawings

Fig. 1 is a front view of a straw overturning and returning device with cutting knives and overturning knives arranged alternately.

Fig. 2 is a side view of a straw overturning and returning device with cutting knives and overturning knives arranged alternately.

Fig. 3 is a front view of the zigzag cutting device.

Fig. 4 is a side view of the zigzag cutting device.

Fig. 5 is a front view of the folding line cutting knife.

Fig. 6 is a side view of the folding line cutting knife.

Fig. 7 is a plane development view of the folding line cutting knife.

Fig. 8 is a front view of the arc type land reclamation device.

Fig. 9 is a side view of the arc type land reclamation device.

Fig. 10 is a front view of the arc-shaped overturning knife.

Fig. 11 is a rear view of the arc-shaped overturning knife.

Figure 12 is a top view of the arc-shaped overturning knife.

Fig. 13 is a side view of the arc-shaped overturning knife.

Figure 14 is a schematic diagram of the movement of the overturning device.

Fig. 15 is a schematic diagram of the movement of the cutting device.

Explanation of symbols: 1—spline shaft head, 2—gear positioning sleeve, 3—shaft cup cover, 4—shaft cup, 5—spindle roller, 6—overturning cutterhead, 7—cutting cutterhead, 8—curved shape Burying knife, 9—broken line cutting knife, 10—bolt, 11—gasket, 12—nut, 13—bearing, 81—first connecting part, 82—first cutting part, 91—second connecting part, 92 - the second cutting part, 921 - the first blade, 922 - the second blade, 923 - the third blade.

detailed description

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. 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, a cutting knife and an overturning knife provided in this embodiment are alternately arranged for burying and returning field stalks, including a main shaft roller 5, a cutting device, an overturning device, and a power transmission for driving the main shaft roller to rotate. mechanism.

Cutting devices and overturning devices are evenly arranged alternately on the main shaft roller 5 , and the two ends of the main shaft roller 5 are respectively cutting devices. In order to prevent weeds from being entangled on the ends and journals of the main shaft roller 5, a cutting device is further arranged outside the cutting devices at both ends, that is, two cutting devices are respectively arranged continuously at the two ends of the main shaft roller 5 to Cutting off the weeds at both ends effectively prevents weeds from winding on the ends and journals of the main shaft roller 5 .

Cutting device adopts folding line type cutting knife 9. As shown in Fig. 5-Fig. 7, described folding line type cutting knife 9 is made up of second connecting part 91 and second cutting part 92, and one side of second cutting part 92 is provided with blade, and described blade is divided into three parts successively. section, the first segment blade 921 is close to the first connecting portion 91, and is at an angle of 17° with the longitudinal direction of the folded line cutting knife 9; the folded line type cutting knife 9 forms a knuckle at the second segment blade 922, and the knurled angle is preferably 120° , and the second segment blade 922 is parallel to the longitudinal direction of the zigzag cutting knife 9 when it is flattened; On the second connecting portion 91, a connection hole is provided, as shown in Fig. 3-Fig. Spacers 11 can be added between the cutter heads 7 . Four zigzag cutting knives 9 are evenly distributed along the circumference of the cutting disc 7 , and at least one zigzag cutting knife 9 has a bending direction opposite to that of the other zigzag cutting knives 9 . The cutting disc 7 is fixed on the spindle roller 5 by welding.

The overturning device adopts an arc type overturning knife 8. As shown in Figures 10-13, the arc-shaped overturning knife 8 is composed of a first connecting portion 81 and a first cutting portion 82, and a blade is provided on one side of the first cutting portion 82, and the blade is round. arc-shaped, and the top of the first cutting portion 82 is turned inwards to be arc-shaped. Connecting holes are provided on the first connecting portion 81, as shown in Fig. 8-Fig. , to form a landfill device. Four arc-shaped overturning knives 8 are evenly distributed along the circumference of the overturning cutter head 6, and the bending direction of at least one arc-shaped overturning knife 8 is opposite to that of other arc-shaped overturning knives 8. The overturning cutter head 6 is fixed on the main shaft roller 5 by welding.

As shown in Figures 1-2, the power transmission mechanism includes a spline shaft head 1, a shaft cup 4, a shaft cup cover 3, a bearing 13, a gear positioning sleeve 2 and a spur gear ( not shown in the figure). The two spline shaft heads 1 are respectively welded to the two ends of the main shaft roller 5, and the spur gears are installed on the spline shaft heads 1 to transmit the power from the gearbox. The bearing 13 is a rolling bearing, such as a deep groove ball bearing.

This device can be used for the whole stalks of rice, etc., to be buried and returned to the field. The device is installed between the two side boxes of the whole stalks of rice Point hitch to hitch to tractor. The output power of the rear output shaft of the tractor is transmitted to the main shaft roller 5 through the gearbox and the power transmission mechanism to drive the main shaft roller 5 to rotate, and the folding line cutter 9 realizes the function of rotating and cutting weeds and straw through the rotary motion of the cutting disc 7 . The arc-shaped overturning knife 8 realizes the function of rotating and chopping the soil and evenly overturning the straw through the rotary motion of the overturning cutter head 6, so as to realize the function of cutting weeds and evenly overturning the whole straw and returning it to the field.

The broken line cutter 9 cuts weeds and stalks and is divided into three processes: first, the large-angle cutting edge of the third blade 923 slides downward, then is squeezed and broken by the parallel cutting edges of the second blade 922, and finally is broken by the second blade 922. The small-angle cutting edge of one section of blade 921 cuts off completely. Compared with traditional cutting knives, this cutting process greatly reduces the degree of wear, increases the service life of the cutting knives, and at the same time increases cutting efficiency and reduces power consumption.

Simultaneously, during the process of chopping soil and burying stalks, the arc-shaped overturning knife 8 first cuts from the cutting edge closer to the center of rotation, gradually to the far side cutting edge, and finally cuts by the positive cutting edge. Its trajectory is that the point-cut soil finally becomes the line-cut soil, which makes full use of the power source and reduces power loss.

The cutting device and the overturning device are evenly arranged alternately with the straw overturning and returning device. When the straw is cut down, the straw is immediately overturned and buried under the soil to ensure that the soil bury the straw evenly and save power consumption; at the same time, the broken line The cutting knife 9 cuts off the weeds, effectively preventing the weeds from winding around the main shaft roller 5; further setting a cutting device outside the cutting devices at both ends, which can prevent the weeds from winding the ends and the journal of the main shaft roller 5.

Claims (10)

1. a kind of cutter and turning over and burying the spaced straw returning device of knife, the device includes principal axis roller and power transmission Mechanism, it is characterised in that interphase distribution, which has cutter device and turned over, on the principal axis roller buries device.

2. device according to claim 1, it is characterised in that cutter device and turn over that to bury device alternate successively on principal axis roller Arrange and be, the two ends of principal axis roller are respectively cutter device.

3. device according to claim 2, it is characterised in that set one respectively again on the outside of the cutter device at two ends and cut Cut device.

4. the device according to claim any one of 1-3, it is characterised in that the cutter device is cut using broken line type Knife；The broken line type cutter are made up of second connecting portion and the second cutting part, and blade, institute are provided with the side of the second cutting part State blade and be divided into three sections, first paragraph blade is close to second connecting portion, and the longitudinal direction with broken line type cutter is in 17 ° of angles；Folding Line style cutter form knuckle at second segment blade, and parallel longitudinal with broken line type cutter during the flattening of second segment blade； The longitudinal direction of 3rd section of blade and broken line type cutter is in 28 ° of angles.

5. device according to claim 4, it is characterised in that the knuckle of broken line type cutter is 120 °.

6. device according to claim 4, it is characterised in that the broken line type cutter are circumferentially evenly distributed on cutting Cutter device is constituted on cutterhead, the cutter plate is fixed on principal axis roller.

7. device according to claim 6, it is characterised in that in the cutter device, the cutting of at least one broken line type The overbending direction of knife is opposite with the overbending direction of other broken line type cutter.

8. the device according to claim any one of 1-3, it is characterised in that it is described turn over to bury device and turn over using arc line type bury Knife；The arc line type, which is turned over, to be buried knife and is made up of first connecting portion and the first cutting part, and blade, institute are provided with the side of the first cutting part Blade is stated in arc-shaped, and the top fold inward of the first cutting part, in arc-shaped.

9. device according to claim 8, it is characterised in that the arc line shaped is turned over to bury knife and be circumferentially evenly distributed on to turn over and buried Composition turns over and buries device on cutterhead, and described turn over is buried cutterhead and be fixed on principal axis roller.

10. device according to claim 9, it is characterised in that described turn over is buried in device, at least one arc line shaped, which is turned over, to be buried The bending direction of knife turned over other arc line shapeds bury knife bending direction it is opposite.