CN112772160A

CN112772160A - Crushing chamber of double-shaft straw crushing and returning machine

Info

Publication number: CN112772160A
Application number: CN201911352070.2A
Authority: CN
Inventors: 谢桂华
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-11
Filing date: 2019-12-20
Publication date: 2021-05-11

Abstract

A crushing chamber of a double-shaft straw crushing and returning machine can effectively solve the problem of soil storage in the crushing chamber and can ensure the crushing effect. The device comprises an upper guide plate, a rear guide plate, a bottom plate sieve, a front baffle, a left side plate, a right side plate, a left connecting plate and a right connecting plate; the bottom plate screen consists of a cross bar, a left end plate, a right end plate and a limiting reinforcing plate; the crushing chamber is arranged at the rear part of the double-shaft straw crushing and returning machine, and the latter crushing shaft assembly is arranged in the soil discharging and crushing chamber and is supported by the left side plate and the right side plate.

Description

Crushing chamber of double-shaft straw crushing and returning machine

The invention belongs to the technical field of agricultural machinery, and particularly relates to a crushing chamber of a double-shaft straw crushing and returning machine.

Background art currently, single-shaft straw chopping and returning machine, straw chopping and returning machine have been popularized, and the chopping, crushing and crushing degree of the crop straw are designed according to the national standard, and the national regulation: the qualified length of the chopped crop straws of corn, sorghum and the like is not more than 100mm, and the qualified length of the chopped crop straws of wheat, rice and the like is not more than 150 mm; in northeast alpine regions, the difficulty of the technology for promoting straw returning is very high according to the standard, the straw returning can be realized only by adopting a deep ploughing technology, vast farmers do not accept the deep ploughing technology, the reason cost is high, the farmers only accept the technology of ploughing once by stubble cleaning, rotary tillage and ridging, the ploughing technology has a shallow plough layer and does not turn over soil, the straws are stirred in the soil of the plough layer even if the straws are returned to the field, the current straw chopping standard is not feasible, the soil is easy to be blown through the wind, and the farmers conflict, so the problem of straw burning is frequently prohibited; therefore, only after the straws are mechanically crushed, shallow ploughing on the ground surface can be realized, namely, the crushing length of the corn straws is less than or equal to 50mm, then stubble cleaning, rotary tillage and ridging are carried out, and the crushed straws are stirred in the soil, so that seeding is not influenced, and farmers can accept the crushed straws. In recent years, in order to meet the requirements of farmers in ridge culture areas, a double-shaft straw crushing and returning machine is developed, and is in the process of gradual improvement, a utility model of a double-day mechanical manufacturing company Limited in Hebei, a coiling device and a double-shaft straw crushing and returning machine (patent number: 2018213879631) are the straw returning machine with improved crushing effect. However, this technique has problems that the soil is accumulated in the bottom plate of the crushing chamber of the latter crushing shaft assembly, the soil discharge effect is poor, the soil accumulated in the crushing chamber affects the straw crushing effect, the rotation resistance of the latter crushing shaft assembly is increased, the oil consumption is high, the number of failures is large, and the economical efficiency is poor. The reason is that: the bottom plate of the crushing chamber provided with the fixed cutter is integral, only a plurality of round holes are arranged, the soil leakage effect is poor, the soil entering the crushing chamber can only be discharged from the crushed straw outlet, and the soil discharge difficulty which cannot be overcome is caused by the shapes of the bottom plate and the movable cutter.

The invention aims to provide a crushing chamber of a double-shaft straw crushing and returning machine, which can effectively solve the technical problems and ensure the crushing effect. The device comprises an upper guide plate, a rear guide plate, a bottom plate sieve, a front baffle, a left side plate, a right side plate, a left connecting plate and a right connecting plate; the bottom plate screen consists of a cross bar, a left end plate, a right end plate and a limiting reinforcing plate; the crushing chamber is arranged at the rear part of the double-shaft straw crushing and returning machine, and the latter crushing shaft assembly is arranged in the crushing chamber and is supported by the left side plate and the right side plate; the bottom plate sieve is positioned below the next crushing shaft assembly and is axially arranged, after the straw enters the crushing chamber, the straw can only move downwards along the rotating direction of the next crushing shaft assembly and along the upper guide plate and the rear guide plate, when the straw moves to the fixed cutter of the bottom plate sieve, the downward straw is blocked, the straw is hit by the driven cutter and is cut, the hit straw continues to move under the action of inertia force, the straw is further crushed when hitting a certain cross bar, the straw leaks at the cross bar, the straw which does not hit the cross bar is discharged from the grass discharge port, and meanwhile soil entering the crushing chamber also leaks in time. The crushing chamber of the double-shaft straw crushing and returning machine comprises an upper guide plate, a rear guide plate, a bottom plate sieve, a front baffle plate, a left side plate, a right side plate, a left connecting plate and a right connecting plate, wherein the bottom plate sieve comprises a cross bar, a left end plate, a right end plate and a limiting reinforcing plate; the left end portion of the transverse strip is fixedly connected with the left end plate, the right end portion of the transverse strip is fixedly connected with the right end plate, and the middle portion of the transverse strip is fixedly connected with the limiting reinforcing plate.

The bottom plate sieve of the crushing chamber of the double-shaft straw crushing and returning machine is designed into an independent unit part and is installed by using a fastening piece, so that the bottom plate sieve is convenient to disassemble, maintain and replace.

The bottom plate sieve of the crushing chamber of the double-shaft straw crushing and returning machine can be not designed into an independent unit part, and the left end part and the right end part of the cross bar of the bottom plate sieve are directly and fixedly connected with the left side plate and the right side plate.

When the straw crushing machine works, the power of a tractor is respectively transmitted to a front crushing shaft assembly and a rear crushing shaft assembly through a transmission part, the front crushing shaft assembly throws picked-up straws to a crushing chamber of the rear crushing shaft assembly, the straws can only move downwards along with the rotating direction of the rear crushing shaft assembly and along an upper guide plate and a rear guide plate after entering the crushing chamber, when the straws move to a fixed cutter position of a bottom plate screen, downward straws are blocked and are immediately beaten by a driven cutter to be crushed, the beaten straws continue to move under the action of inertia force, when the operating straws hit a certain cross bar, the straws are further crushed and then leak at the cross bar, the straws which do not hit the cross bar are discharged from a grass discharge port, and meanwhile, soil entering the crushing chamber is also leaked in time

The double-shaft straw crushing and returning machine soil discharging and crushing chamber has the advantages that the problem that the crushing effect and the working resistance are increased due to soil storage in the crushing chamber of the next crushing shaft assembly can be effectively solved, the problem that a flail knife or a flail hammer cannot knock soil during operation of the previous crushing shaft assembly of the double-shaft straw crushing and returning machine is difficult to knock soil, particularly, the soil is easy to knock soil in a ridge culture area due to the fact that ridge distances are not uniform, depths of furrows are not uniform, and the problem of knocking soil is an inevitable phenomenon. The double-shaft straw crushing and returning machine bottom plate sieve has the advantages that the double-shaft straw crushing and returning machine bottom plate sieve is designed into an independent unit component and is fixedly connected with the left side plate and the right side plate through the left connecting plate and the right connecting plate, so that the double-shaft straw crushing and returning machine bottom plate sieve is convenient to disassemble, maintain and replace.

Description of the drawingsthe invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic longitudinal sectional view of a crushing chamber of a double-shaft straw crushing returning machine.

FIG. 2 is an expanded view of a bottom screen of a soil discharge crushing chamber of a double-shaft straw crushing returning machine.

FIG. 3 is a schematic longitudinal cross-sectional view of a bottom screen of a double-shaft straw crushing and returning machine soil discharge crushing chamber.

In the figure, 1, an upper guide plate, 2, a rear guide plate, 3, a bottom plate sieve, 4, a front baffle, 5, a left side plate, 6, a right side plate, 7, a left connecting plate, 8, a right connecting plate, 3-1, a cross bar, 3-2, a left end plate, 3-3, a right end plate and 3-4 limit reinforcing plates.

The specific implementation mode is shown in fig. 1, fig. 2 and fig. 3, and the crushing chamber of the double-shaft straw crushing and returning machine comprises an upper guide plate (1), a rear guide plate (2), a bottom plate sieve (3), a front baffle (4), a left side plate (5), a right side plate (6), a left connecting plate (7) and a right connecting plate (8); the bottom plate screen (3) consists of a cross bar (3-1), a left end plate (3-2), a right end plate (3-3) and a limiting reinforcing plate (3-4); the rear part behind this crushing room that is located biax straw crushing still field machine, the crushing axle assembly of back installs in this crushing room to by left side board (5) and right side board (6) support, bottom plate sieve (3) are located the below of the crushing axle assembly of back and axial setting. The upper guide plate (1) is fixedly connected with the rear guide plate (2) through a rear upper cross beam, the rear guide plate (2) is fixedly connected with the bottom plate screen (3) through a rear cross beam, the left ends of the upper guide plate (1), the rear guide plate (2) and the front baffle (4) are welded with the left side plate (5), the right ends of the upper guide plate (1), the rear guide plate (2) and the front baffle (4) are welded with the right side plate (6), the left end plate (3-2) and the left side plate (5) of the bottom plate screen (3) are fixedly connected through a left connecting plate (7), and the right end plate (3-3) and the right side plate (6) of the bottom plate screen (3) are fixedly connected through a right connecting plate (8); the left end portion of the transverse strip (3-1) is fixedly connected with the left end plate (3-2), the right end portion of the transverse strip (3-1) is fixedly connected with the right end plate (3-3), and the middle portion of the transverse strip (3-1) is fixedly connected with the limiting reinforcing plate (3-4).

Claims

1. The utility model provides a biax straw is smashed still field machine and is smashed room which characterized in that: the rear crushing shaft assembly is arranged at the rear part behind a double-shaft straw crushing returning machine, and is installed in the crushing chamber and supported by a left side plate (5) and a right side plate (6), and comprises an upper guide plate (1), a rear guide plate (2), a bottom plate sieve (3), a front baffle (4), a left side plate (5), a right side plate (6), a left connecting plate (7) and a right connecting plate (8), wherein the upper guide plate (1) is fixedly connected with the rear guide plate (2) through a rear upper cross beam, the rear guide plate (2) is fixedly connected with the bottom plate sieve (3) through a rear cross beam, the left ends of the upper guide plate (1), the rear guide plate (2) and the front baffle (4) are welded with the left side plate (5), the right ends of the upper guide plate (1), the rear guide plate (2) and the front baffle (4) are welded with the right side plate (6), and the left end plate (3-2) and the left side plate (5) of the bottom plate sieve (3) are fixedly connected with the left connecting The right end plate (3-3) of the bottom plate screen (3) is fixedly connected with the right side plate (6) through a right connecting plate (8);

2. the crushing chamber of the double-shaft straw crushing returning machine according to claim 1, which is characterized in that: the bottom plate sieve (3) is located below a rear crushing shaft assembly and is axially arranged, the bottom plate sieve (3) consists of a transverse strip (3-1), a left end plate (3-2), a right end plate (3-3) and a limiting reinforcing plate (3-4), the left end part of the transverse strip (3-1) is fixedly connected with the left end plate (3-2), the right end part of the transverse strip (3-1) is fixedly connected with the right end plate (3-3), and the middle part of the transverse strip (3-1) is fixedly connected with the limiting reinforcing plate (3-4).