CN202750479U - Straw cutting and throwing machine - Google Patents

Abstract

The utility model provides a straw cutting and throwing machine which comprises a housing, a suspension device and a speed change mechanism arranged on the housing, a cutter shaft driven by the speed change mechanism and a transmission mechanism, a plurality of moving cutters installed on the cutter shaft, a stationary cutter arranged in the housing, a land wheel supported on the lower portion of the housing, a guide plate installed on a discharge outlet in the housing, and guide vanes installed on the guide plate and used for throwing out of crushed straw. The straw cutting and throwing machine solves problems existing in the prior technology like that the throwing of the crushed straw is uneven and straw with strong toughness is hard to cut up completely.

Description

Straw chopping and spreading machine

technical field

The utility model relates to a straw processing device, in particular to a straw chopping and spreading machine.

Background technique

At present, the straw in the farmland is mostly crushed and returned to the field instead of burning, which protects the environment on the one hand, and makes full use of the straw on the other hand, and provides fertilizer for the field at the same time. Existing straw pulverizers generally include a suspension device, a speed change mechanism, a transmission mechanism, a casing, a cutter shaft and a ground wheel. The speed change mechanism is connected with the power output shaft of the tractor through a universal joint, and is driven by the power output by the tractor to increase speed, so that the moving knife on the knife shaft rotates at a high speed, generating high speed and kinetic energy, and cutting the straw Put into the casing, the moving knife and the fixed knife will hit, tear and knead the straw several times until the straw is crushed, and the crushed straw is thrown along the inner wall of the casing under the action of airflow and centrifugal force to the rear on the ground.

However, the existing straw pulverizers cannot evenly throw out the straw that was placed into strips by the harvester after harvesting, resulting in plow blockage or bumps on the turned land during the subsequent field farming process. It seriously affects the aesthetics of field sowing and land leveling; the field is silted with broken straw, and after the seedlings grow, dead seedlings often appear in the place where the broken straw is silted, which seriously affects the increase of farmers' production and income.

Utility model content

The purpose of the utility model is to provide a straw chopping and throwing machine to solve the problem that the existing straw grinder throws the broken straw unevenly.

The utility model is achieved in this way: a straw chopping and throwing machine, comprising:

casing;

a suspension device and a speed change mechanism arranged on the casing;

A cutter shaft driven by the speed change mechanism and transmission mechanism;

a plurality of moving knives mounted on the knife shaft;

a fixed knife arranged in the casing;

ground wheels supported on the lower part of the casing;

a deflector installed on the discharge port of the casing; and

The guide vanes installed on the deflector plate are used for throwing out the broken straws.

The moving knife is a straight knife with a serrated edge.

The moving knives are installed on the knife shaft in a spiral arrangement.

The straw chopping and spreading machine also includes:

a tensioning device arranged in the casing for adjusting the tightness of the transmission mechanism;

a curtain positioned forward of the enclosure; and

The supporting feet are installed under the casing.

The utility model installs a deflector on the discharge port, and installs guide vanes on the deflector. When working, the shredded straw in the casing can move along the deflector and the guide blade under the action of airflow and centrifugal force. The blades are evenly sprinkled on the rear side of the machine according to the set direction, thereby solving the problem of unevenly sprinkled broken straw in the prior art.

By setting the moving knife as a straight knife, the wear resistance of the moving knife can be improved, so that the moving knife does not need to be replaced frequently, and the effect of the straight knife cutting straw is better; several moving knives are installed on the knife shaft in a spiral arrangement, which can Enhance the ability of the movable knife to pick up straw, and increase the air volume generated when the knife shaft rotates, which is more conducive to straw throwing.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Among the figure: 1. Suspension device, 2. Speed change mechanism, 3. Cover, 4. Tensioning device, 5. Ground wheel, 6. Cutter shaft, 7. Curtain stop, 8. Support foot, 9. Universal joint, 10. Deflector.

Detailed ways

As shown in Figure 1, the utility model includes a casing 3, a suspension device 1 is arranged on the front upper part of the casing 3, and a speed change mechanism 2 is arranged in the casing 3 below the suspension device 1, and the front end of the speed change mechanism 2 passes through a universal joint. 9 is connected with the power output shaft on the tractor, and the rear end of the transmission mechanism 2 is connected with the cutter shaft 6 through a transmission mechanism (for example, a sprocket or a pulley). Tightening device 4.

Some moving knives are installed on the cutter shaft 6, and the said several moving knives work together with the fixed knives in the casing 3 to chop straw. The moving knife is a straight knife made of manganese steel, and the edge of the straight knife has serrations. Using a straight knife to replace the machete in the prior art can not only enhance the wear resistance of the blade, so that the user does not need to change the blade frequently; moreover, the straight knife has a stronger chopping ability, and is suitable for tough straw (such as rice straw) For this purpose, the chopping effect of the straight knife is more ideal.

The movable knives are mounted on the cutter shaft 6 in a spiral arrangement, which on the one hand enhances the ability of the movable knives to pick up stalks, and on the other hand can generate greater air volume when the cutter shaft 6 rotates, which is beneficial to throwing broken straws.

A discharge port is provided at the rear of the casing 3, and the chopped straw is thrown to the discharge port along the inner wall of the casing 3 under the action of airflow and centrifugal force. By increasing the size of the discharge port , can facilitate the throwing of crushed straw.

In the utility model, a guide plate 10 is installed on the discharge port, and guide vanes that can evenly throw the broken straw along the set direction are installed on the guide plate 10 .

A ground wheel 5 is arranged on the rear and lower side of the casing 3, and the machine can be moved forward or turned by the ground wheel 5. When the machine stopped working, support feet 8 could be set at the front bottom of cover 3, and the supporting effect of support feet 8 and ground wheels 5 could prevent cover 3 from contacting the field. Can also be provided with shielding curtain 7 in casing 3 fronts, can prevent that the dust in casing 3 enters on the operator's body on the front tractor under the shielding effect of shielding curtain 7.

When working, the transmission mechanism 2 receives the power from the tractor and speeds up, and then drives the cutter shaft 6 to rotate at a high speed through the transmission mechanism. The upright or lodging straw in the field is picked up into the casing 3, and the movable knife and the fixed knife together perform multiple beating, tearing, rubbing and other actions on the straw in the casing 3 until the straw is crushed. The deflector 10 installed on the discharge port at the rear of the casing inner wall and the guide vanes on it are evenly sprinkled on the ground at the rear side of the machine.

Claims (4)

1. a stalks cutting is shed machine, it is characterized in that, comprising:

Case (3);

Be arranged on suspension arrangement (1) and gear (2) on the described case (3);

Cutter shaft (6) by described gear (2) and transmission mechanism driving;

Be installed in the some moving knife on the described cutter shaft (6);

Be arranged on the stationary knife in the described case (3);

Be supported on the land wheel (5) of described case (3) bottom;

Be installed in the deflector (10) on the described case discharging opening; And

Be installed on the described deflector, be used for guide vane that crushing straw is dished out.

2. stalks cutting according to claim 1 is shed machine, it is characterized in that, described moving knife is straight knife, and its blade is zigzag.

3. stalks cutting according to claim 1 is shed machine, it is characterized in that, described moving knife is the helical arrangement mode and is installed on the described cutter shaft.

4. according to claim 1,2 or 3 described stalks cuttings shed machine, it is characterized in that, also include:

Be arranged on and be used for regulating the tensioning apparatus (4) of described transmission mechanism elasticity in the described case (3);

Be arranged on the check apron (7) in described case (3) the place ahead; And

Be installed in the support foot (8) of described case (3) below.

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