CN104604442A - Double-layer cutter of combine harvester - Google Patents

Abstract

The invention relates to a double-layer cutter for a combine harvester, which includes an upper cutter fixed on a frame, and a lower cutter fixed on the frame, the lower cutter is correspondingly arranged below the upper cutter, and the lower cutter Including the lower cover and the lower cutting blade arranged in the lower cover, the pulling component, the crank rocker mechanism and the lower auger blade, the crank rocker mechanism is fixed with the reeling claw, and the crank rocker mechanism drives the reeling claw to do reciprocating motion , pick up and guide the stubble, and then cut the stubble by the lower cutting blade, and finally, with the help of the pushing claw, the lower auger blade receives the stubble after cutting, and gathers the stubble in one place and outputs it into a ridge. The double-layer cutter of the combine harvester can perform secondary cutting on the stubble, and can completely remove the remaining stubble.

Description

Combine Harvester Double Cutter

technical field

The invention relates to a double-deck cutter for a combine harvester, which belongs to the auxiliary facilities of the wheat combine harvester.

Background technique

Wheat is an annual gramineous plant widely planted all over the world, and it is the food crop whose total output is second only to corn in the world. my country is a large agricultural country. While the wheat planting technology has been improved, the corresponding supporting equipment for harvesting wheat has not been developed rapidly. As far as the present existing combine harvester is only equipped with one group of cutters, there are many deficiencies:

(1) If the single-layer cutter wants to ensure shorter stubble, it needs to reduce the cutting height, so that the longer straw will be harvested and enter the thresher, so that the machine will consume a lot of power in threshing and cleaning , resulting in waste of resources and increased harvesting costs;

(2) Longer straw enters the thresher, especially when the straw is wet, it is easy to entangle and jam the thresher, and it is difficult to eliminate the fault. In many cases, it is necessary to manually remove the entangled straw , Time-consuming and labor-intensive, not only affects the rush to harvest and rush to plant, but also affects the harvesting efficiency, reducing the operating income of the harvester owner in the short busy season;

(3) In many cases, in order to increase harvesting speed and increase income, the owner of the harvester will raise the cutting position of the straw, leaving high stubble on the ground. bud. The vast majority of farmers, on the one hand, do not have a strong awareness of environmental protection, and on the other hand, they are eager to save trouble, and often remove the straw by burning, which not only destroys the microbial structure in the soil, but also poses a great potential safety hazard, and greatly aggravates the pollution of the soil. air pollution.

In view of the above situation, it is urgent to analyze and improve the wheat combine harvester and its important components, so as to improve the efficiency of wheat harvesting on the basis of traditional agricultural machinery.

Contents of the invention

The technical problem to be solved by the present invention is: to provide a double-layer cutter for a combine harvester, which can perform secondary cutting on the stubble and completely remove the remaining stubble.

The technical solution adopted by the present invention to solve the technical problems is: a double-deck cutter for a combine harvester, comprising an upper cutter fixed on the frame, and a lower cutter fixed on the frame, the lower cutter The cutter is correspondingly arranged below the upper cutter, and the lower cutter includes a lower cover and a lower cutting blade arranged in the lower cover, a grass pulling assembly, a crank rocker mechanism and a lower auger blade, and the lower cutting blade is fixed on the front lower end of the lower cover, Do reciprocating cutting movement, the crank rocker mechanism is two groups, symmetrically arranged at the opening end of the lower cover, the plucking grass assembly is correspondingly arranged above the lower cutting blade and can rotate freely, the plucking grass assembly can clamp the stubble, the The lower auger blade is arranged inside the lower cover and can rotate freely. The lower auger blade receives the stubble cut by the lower cutting blade and transports the stubble to a place of the lower cutter, and outputs it in a ridge.

In a preferred embodiment of the present invention, the plucking grass assembly includes a central shaft and several constant speed rotating rods parallel to the central shaft, and a variable speed rotating rod. The constant speed rotating rods are fixedly connected, and each constant speed rotating rod can Rotating at a uniform speed around the central axis at the same time, the various speed-changing rotating rods are independent of each other, and each speed-changing rotating rod can perform speed-changing movements around the central axis respectively.

In a preferred embodiment of the present invention, the crank-rocker mechanism includes a crank, a connecting rod and a rocker, the crank and the rocking rod are movably connected through a connecting rod, and the crank can be wound around a fixed point of the lower cover Make a circular motion, and drive the connecting rod and the rocker to make a specific curved motion.

In a preferred embodiment of the present invention, at least one row of reeling claws is fixed at a specific point on the connecting rod, and the crank rocker mechanism drives the reeling claws to perform a reciprocating "retracting" movement to grab and guide the stubble, so as to Conveying the stubble into the lower cover and cutting the stubble can play the role of grabbing, guiding and pushing the stubble.

In a preferred embodiment of the present invention, the movement period of the crank-rocker mechanism is one-fourth of the movement period of the straw pulling assembly.

In a preferred embodiment of the present invention, the upper cutter includes an upper cover, a reel, an upper auger blade and an upper cutting blade, and the upper cutting blade is arranged at the opening end of the upper cover and can perform reciprocating cutting motion, The reel is correspondingly arranged above the upper cutting blade and can rotate freely. The upper auger blade is arranged on the inner side of the upper cover and can rotate freely. The upper auger blade receives the ears of wheat cut by the upper cutting blade and Transport to the threshing mechanism.

In a preferred embodiment of the present invention, the upper cutter and the lower cutter are connected by two connecting rods, and the two connecting rods are equal in length and parallel.

The working principle of this combine double layer cutter is as follows:

1) The upper and lower layers of different cutters realize the "separation treatment" of wheat straw with and without wheat ears;

2) Only a small part of straw with ears of wheat is cut and transported to the thresher through the upper cutter, thereby reducing the amount of straw entering the thresher. Compared with the existing combine harvester, it greatly reduces the operating load of the machine and saves Fuel, reduce energy consumption;

3) The residual wheat stubble can be completely removed through the lower cutter composed of the crank rocker mechanism, the plucking grass assembly and the lower cutting blade;

4) Finally, the straw harvested by the upper and lower layers of cutters is output in a neat row, which is convenient for the operation of the subsequent baler, and the straw is bundled for recycling.

The beneficial effects of the present invention are:

1) The double-layer cutter realizes the separation treatment technology of straw with ears and without ears, which changes the traditional operation method. Although adding a layer of cutters requires an additional part of energy consumption, its consumption is far less than that of the whole straw entering In the case of a thresher, this reduces the workload, reduces energy consumption, reduces harvesting costs, improves harvesting efficiency, and increases the operating income of the harvester owner;

2) The lower layer "cutter" uses the crank rocker mechanism and the pulling component to work together. The pulling component is used to clamp the stubble and pull up the cut stubble, and then pass it to the lower auger blade. The crank rocker mechanism is used It is used to pick up and guide the stubble, and push the stubble when it is passed to the blade of the lower auger to prevent the straw from being scattered around. In this way, the combination of "pick-cut-pull-push" can remove the stubble from the bottom;

3) The lower cutter can be adjusted up and down according to the flatness of the ground and the height of the wheat to keep it consistent with the upper cutter.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the three-dimensional structural representation of combine harvester double-deck cutter of the present invention;

Fig. 2 is the brief view of the combine harvester double-deck cutter of the present invention;

Fig. 3 is the structural representation of the crank rocker mechanism of the combine harvester double-deck cutter of the present invention;

Fig. 4 is the structural representation when the lower layer cutter of combine harvester double-deck cutter of the present invention cuts stubble;

Fig. 5 is the structure schematic diagram when the lower layer cutter of combine harvester double-deck cutter of the present invention cuts stubble;

Fig. 6 is the structural representation when the lower layer cutter of the double-deck cutter of the combine harvester of the present invention cuts stubble;

Fig. 7 is the structural representation when the lower layer cutter of the double-deck cutter of the combine harvester of the present invention cuts stubble;

Fig. 8 is a structural schematic view of the lower layer cutter of the double layer cutter of the combine harvester cutting stubble.

Detailed ways

The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

As shown in Fig. 1 and Fig. 2, a kind of combine harvester double-deck cutter comprises the upper layer cutter 1 fixed on the frame 2, also includes the lower layer cutter 4 fixed on the frame 2, the lower layer cutter The device 4 is correspondingly arranged below the upper layer cutter 1, close to the ground 16, and the lower layer cutter 4 includes a lower cover 10 and a lower cutting blade 9 arranged in the lower cover 10, a puller assembly 6, a crank rocker mechanism 7 and a lower auger The blade 8 and the crank rocker mechanism 7 are two groups, which are symmetrically arranged at the opening end of the lower cover 10, and the reeling claw is fixed between the two crank rocker mechanisms 7, and the crank rocker mechanism 7 drives the reeling claw to do reciprocating "collecting" To move to guide the stubble in the lower cover 10, the pulling-out component 6 is correspondingly arranged above the lower cutting blade 9 and can rotate freely, the pulling-out component 6 can clamp the stubble, and the lower auger blade 8 is arranged on the lower cover 10 The inner side can rotate freely, and the lower auger blade 8 conveys the stubble cut by the lower cutting blade 9 and collects the stubble into a ridge and places it on the ground.

The grass pulling assembly 6 includes a central axis and some constant speed rotating rods 20 parallel to the central axis, and a variable speed rotating rod 22. The constant speed rotating rods 20 are welded together, and each constant speed rotating rod 20 can be rotated around the central axis at the same time. Rotating at a constant speed, each of the speed-changing rotating rods 22 is independent of each other, and each of the speed-changing rotating rods 22 can perform speed-changing movements around the central axis.

The upper cutter 1 adopts a traditional design, including an upper cover 13, a reel 14, an upper auger blade 11 and an upper cutting blade 12, and the upper cutting blade 12 is arranged on the opening end of the upper cover 13 and can perform reciprocating cutting motion , the reel 14 is correspondingly arranged above the upper cutting blade 12 and can rotate freely, and the upper auger blade 11 is arranged on the inner side of the upper cover 13 and can rotate freely, and the upper auger blade 11 receives the upper cutting blade 12 after cutting The ears of wheat are transported to the threshing mechanism.

The upper layer cutter 1 and the lower layer cutter 4 are connected by two connecting rods 3. The two connecting rods 3 are equal in length and parallel, and form a parallelogram with the frame. By the nature of the parallelogram, the lower layer cutter 4 and the upper layer Consistency of cutter 1 cutting angle. The hydraulic lifting device 5 can control the lifting of the lower layer cutter 4 .

The following is a detailed introduction to the working principle of the lower layer cutter 4:

Because the lower layer cutter 4 is aimed at the remaining stubble after the wheat ear is harvested by the upper cutter 1, the height of the stubble is relatively short, and it is easy to scatter around when harvesting, which is not conducive to cutting and cleaning. A further improvement was made, and the original "pull the grain" was changed to "pull the grain", that is, the top of the stubble was clamped by a pair of rods, and the stubble was cut by the lower cutting blade 9 at the same time. After the "clamping" of the straw assembly 6 is delivered to the lower auger blade 8, it is released, and then the wheat stubble is uniformly output by the lower auger blade 8.

While pulling the grain assembly 6 work, the cooperation of the crank rocker mechanism 7 is also arranged. After the "he wheel" loosens the stubble, it "guides" the stubble to enter the lower auger blade 8. The design of the crank rocker mechanism 7 is shown in Figure 3, the lower cover 10 in the figure is fixed; the crank 17 makes a circular motion around the H point; one end of the connecting rod 19 makes a partial circular motion around the F point, and the other end around the G point Do a complete circular motion; its effective action point 1 does a specific curved motion, and its motion track 15 is as shown in Figure 4-8, and the effective action curve of the action similar to "retracting" is a section near the lower cutting blade 9.

4 to 8 are working demonstration diagrams of the lower layer cutter 4 . As shown in Figure 4, the four constant-speed rotating rods 20 of a, b, c, and d of the pulling grass assembly 6 are welded together, and rotate around the central axis at a uniform speed, while the four variable-speed rotating rods A, B, C, and D 22 is then an independent mechanism, which performs variable speed movement around the central axis. Now just explain in detail the rods A and a in the position in Figure 4: at this time, the A rod moves slowly for a short time, because the machine is moving forward, so the A rod will "hug" some stubble 14, as shown in Figure 4; Then bar a catches up to bar A, and clamps the stubble 14, and simultaneously the reeling claw 21 also moves from point J to point K along the track, and "combs" the stubble 14, as shown in Figure 5; The cutting blade 9 cuts off the stubble 14, and is brought to the position of the lower auger blade 8 by the clamping action of the reel assembly 6, while the reeling claw 21 is used for "guiding" cooperation, at this time, the reeling claw 21 is The K point moves to the L point, and the D rod moves slowly at the original position of the A rod, as shown in Figure 6; Claw 21 moves from L point to M point, as shown in Figure 7; Last wheat stubble 14 is uniformly output by lower auger blade 8, at this moment A rod moves to the position of B rod among Fig. 4, and reel claw 21 returns to The initial position has completed a quarter of the movement so far, as shown in Figure 8. Next, rods D and d will do the same motion as rods A and a, and the cycle continues in turn. The four rods A, B, C, and D are constantly accelerating and decelerating, and are constantly chasing and being chased. And the crank rocker mechanism 7 also does not stop cooperating with it, and its motion cycle is then 1/4th of the 6 cycles of pulling the grain wheel assembly.

Inspired by the above-mentioned ideal embodiment according to the present invention, through the above-mentioned description content, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (7)

1. the double-deck cutter of combine, comprise the upper strata cutter be fixed in frame, it is characterized in that: also comprise the lower floor's cutter be fixed in frame, described lower floor cutter correspondence is arranged on below the cutter of upper strata, lower floor's cutter comprises lower cover and is arranged on the lower cutting blade in lower cover, pulling assembly, crank and rocker mechanism and lower screw feeder blade, described lower cutting blade is fixed on the front lower end of lower cover, do reciprocating cutting motion, described crank and rocker mechanism is two groups, be symmetricly set on lower cover openend, described pulling assembly correspondence is arranged on above lower cutting blade and also can rotates freely, pulling assembly can clamp wheat stubble, described lower screw feeder blade is arranged on inside lower cover and also can rotates freely, wheat stubble is also carried the one end coming together in lower floor's cutter by the wheat stubble after lower screw feeder blade receives lower cutting blade cutting, concentrate and be output into ridge.

2. the double-deck cutter of combine as claimed in claim 1, it is characterized in that: described pulling assembly comprises central shaft and some at the uniform velocity bull stick, speed change bull sticks paralleled with central shaft, describedly respectively at the uniform velocity to be fixedly connected with between bull stick, each at the uniform velocity bull stick at the uniform velocity can rotate around central shaft simultaneously, described each speed change bull stick is separate, and each speed change bull stick can do variable motion respectively around central shaft.

3. the double-deck cutter of combine as claimed in claim 1 or 2, it is characterized in that: described crank and rocker mechanism comprises crank, connecting rod and rocking bar, described crank is flexibly connected by connecting rod with between rocking bar, described crank can circle around a fixing point of lower cover, and drivening rod and rocking bar do curvilinear motion.

4. the double-deck cutter of combine as claimed in claim 3, it is characterized in that: described connecting rod is fixed with and at least onely extricates from standing grain pawl, crank and rocker mechanism drives group standing grain pawl to do and back and forth draws over to one's side motion, picks up and guides wheat stubble, to carry wheat stubble and cut wheat stubble in lower cover.

5. the double-deck cutter of combine as claimed in claim 4, is characterized in that: the period of motion of described crank and rocker mechanism is 1/4th of the pulling component movement cycle.

6. the double-deck cutter of combine as claimed in claim 1; it is characterized in that: described upper strata cutter comprises upper cover, straw shift wheel, upper screw feeder blade and upper cutting blade; described upper cutting blade is arranged on upper cover openend and can does reciprocating cutting motion; described straw shift wheel correspondence is arranged on above cutting blade and also can rotates freely; described upper screw feeder blade is arranged on inside upper cover and also can rotates freely; upper screw feeder blade receives the wheat head after upper cutting blade cutting, and is delivered to separating mechanism.

7. the double-deck cutter of combine as described in claim 1 or 6, is characterized in that: described upper strata cutter is connected by two connecting rods with between lower floor cutter, and two connecting rods are isometric and parallel.