Stable hay cutter head assembly

Abstract

The utility model discloses a stable cutter head assembly of a hay cutter. The stable cutter head assembly comprises a rotating shaft, a cutter head, a flying disc, a tail disc, a hay cutter, a hammer and a hammer shaft, according to the cutter head assembly of the hay cutter, the hay penetrating groove penetrating through the edge of the cutter head is formed, the opening of the hay penetrating groove in the edge of the cutter head is large, and the hay penetrating groove is gradually narrowed in the direction of the rotating shaft, so that compared with a traditional hay penetrating hole formed in the cutter head, the phenomenon that the hay penetrating groove is blocked by hay is not prone to occurring; the problems that an existing hay cutter is prone to blockage, a bearing is prone to damage, and energy consumption is increased in the using process are solved. According to the cutter head of the hay cutter, the opening in one side of the hay penetrating groove is arranged to be in the arc shape, the overall structure of the cutter head is in the fan blade shape, each fan blade is provided with the corresponding hay cutter, the corresponding hammer piece shaft and the corresponding reinforcing rib, and compared with independently-arranged blades, balance and stress are facilitated, and the service life of the cutter head assembly is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to forage grass crushing device technical field, especially relate to a stable grass chopper cutterhead assembly. BACKGROUND

[0002] The grass chopper is mainly used for crushing various straws, such as corn straw, sorghum straw, straw, etc., and then is used for feeding cattle, sheep and other livestock. The cutterhead assembly of the existing grass chopper generally comprises a rotating shaft, a cutterhead, a flying disc and a hammer plate arranged between the cutterhead and the flying disc. For example, the patent "high-efficiency forage grass special fine crusher" (CN217038028U) applied by the inventor in the early stage, the cutterhead is provided with moving knives (also called grass knives) and grass perforations at intervals, the moving knives are fixed on the side close to the feed inlet, and the moving knives shield the grass perforation part. The moving knives are also called grass knives, and 3-4 grass knives (moving knives) are arranged at intervals on each cutterhead. When in use, the grass knives (moving knives) rotate with the cutterhead to cut and crush the forage grass, the crushed forage grass passes through the cutterhead from the grass perforation, is crushed again under the action of the hammer plate, and is conveyed and discharged to the discharge port under the action of the wind of the flying disc.

[0003] The cutterhead assembly of the above grass chopper is prone to the phenomenon of grass blockage (or partial blockage) of the grass perforation after being used for a period of time, especially when crushing corn straw or forage grass with high water content, the grass adhering around the grass perforation will increase the rotating resistance and increase the energy consumption of the grass chopper. Especially when a large amount of forage grass accumulates on a certain grass perforation, the cutterhead is prone to imbalance, the cutterhead is prone to vibration during rotation with the rotating shaft, the bearing is prone to damage, there is a great safety hazard, and the service life of the cutterhead assembly is affected. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the above defects, providing a stable grass chopper cutterhead assembly, solving the problems of blockage, bearing damage and increased energy consumption during use of the existing grass chopper.

[0005] In order to achieve the above object, the utility model provides a kind of stable hay cutter cutterhead assembly, including rotating shaft, cutterhead, flying disc, tail disc, cutter, hammer piece and hammer piece shaft, the rotating shaft is rotated by motor drive, the cutterhead, flying disc and tail disc are sequentially spaced and fixed on the rotating shaft, the cutterhead and flying disc between and the flying disc and tail disc between respectively install the hammer piece shaft, the cutterhead is spaced and provided with forage slot, the forage slot extends from cutterhead brim to rotating shaft direction, and the opening size of forage slot at cutterhead brim is greater than the opening size of one end close to rotating shaft;The cutter and hammer piece shaft are simultaneously installed on the cutterhead between the adjacent two forage slots, the cutter is installed in one side of the forage slot, the hammer piece shaft is installed in the back of the cutterhead, the side without cutter, and the installation position of hammer piece shaft is staggered with the cutter, the hammer piece is hinged on the hammer piece shaft.

[0006] Preferably, the forage slot has 3-6, and the cutter has 3-6 groups.

[0007] Preferably, the forage slot has 4, and the cutter has 4 groups.

[0008] Preferably, the forage slot is arc-shaped at one end away from the rotating shaft and the side without cutter, and the overall structure of the cutterhead is fan-shaped.

[0009] Preferably, the cutterhead and flying disc between and the flying disc and tail disc between are respectively installed with reinforcing ribs, and the reinforcing ribs are installed on the axis line of the hammer piece shaft and the rotating shaft.

[0010] Preferably, the hammer piece does not contact or partially contacts the reinforcing rib at the end during rotation around the hammer piece shaft.

[0011] Preferably, the flying disc has 1-3. When the number of flying discs is more than 1, the diameter of the flying disc close to the cutterhead is smaller than that of the other flying discs. It is beneficial to form wind power and convey the forage to the discharge port, further improving the efficiency of forage crushing.

[0012] Preferably, the flying disc and the tail disc are installed with blades, and the blades are inserted at the brim of the flying disc and the tail disc. The setting of the blades is more beneficial to drive the forage to be sprayed out of the discharge port. Preferably, the blades are designed in an inclined manner, i.e. the extension line of the blade does not pass through the axis of the rotating shaft, but is designed in a spiral-like manner, which has small resistance and is more beneficial to drive the forage and improve the crushing efficiency.

[0013] Another technical scheme of the present application: a hay cutter, comprising a rack, a motor and the above hay cutter cutterhead assembly, the rack is provided with a crushing cavity, the crushing cavity is provided with an inlet and an outlet, the hay cutter cutterhead assembly is arranged in the crushing cavity, and the motor is arranged on the rack outside the crushing cavity and used for driving a rotating shaft of the hay cutter cutterhead assembly.

[0014] Compared with the prior art, the hay cutter cutterhead assembly has the following beneficial effects:

[0015] 1. The hay cutter cutterhead assembly is provided with the grass penetrating slot penetrating the cutterhead edge, the opening of the grass penetrating slot at the cutterhead edge is larger and gradually narrows towards the rotating shaft, compared with the traditional grass penetrating hole arranged on the cutterhead, the phenomenon of grass blocking the grass penetrating slot is less likely to occur, and the problems of blockage, bearing damage and energy consumption increase in the use process of the existing hay cutter are solved.

[0016] 2. The hay cutter cutterhead is provided with the arc-shaped opening on one side of the grass penetrating slot, the overall structure of the cutterhead is fan-shaped, and the cutter, the hammer shaft and the reinforcing rib are arranged on each fan blade respectively, compared with the independently arranged blade, the fan-shaped structure is beneficial to balance and stress, and is beneficial to improving the service life of the cutterhead assembly.

[0017] 3. The hay cutter cutterhead assembly is provided with the reinforcing rib arranged on the cutterhead in an interval mode, and the reinforcing rib is arranged on the connecting line of the hammer shaft and the rotating shaft, in the use process, the hammer is less likely to be stuck on the reinforcing rib regardless of forward rotation or reverse rotation, and the stress on the reinforcing rib is better. Meanwhile, the reinforcing rib not only has the function of strengthening the cutterhead, but also can cooperate with the hammer to strengthen the secondary crushing effect of the hammer. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a side structure schematic view of the hay cutter cutterhead assembly of the present application.

[0019] Figure 2 is a structure schematic view of the front of the cutterhead of the present application.

[0020] Figure 3 is a structure schematic view of the flying disc close to the cutterhead of the present application.

[0021] Figure 4 is a structure schematic view of the flying disc close to the tail disc of the present application.

[0022] Figure 5 is a structure schematic view of the tail disc of the present application.

[0023] MAIN REFERENCE SIGN EXPLANATION

[0024] 1. Rotating shaft; 2. Cutter head; 21. Feed trough; 3. Flying disc; 4. Tail disc; 5. Cutter; 6. Hammer blade; 7. Hammer blade shaft; 8. Reinforcing rib; 9. Blade. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0026] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Example 1

[0028] like Figure 1 As shown, a stable chaff cutter assembly includes a rotating shaft 1, a cutter head 2, a fly disc 3, a tail disc 4, a chaff cutter 5, a hammer blade 6, a hammer blade shaft 7, a reinforcing rib 8, and blades 9. The cutter head 2, fly disc 3, and tail disc 4 are sequentially and spaced apart on the rotating shaft 1. There are two fly discs 3. The hammer blade shaft 7 and the reinforcing rib 8 are respectively installed between the cutter head 2 and the fly disc 3, between adjacent fly discs 3, and between the fly disc 3 and the tail disc 4. The blades 9 are also installed between the fly disc 3 and the tail disc 4. The cutter head 2 is provided with grass passage grooves 21 at intervals. The chaff cutter 5 is installed on one side of the grass passage groove 21, and the hammer blade 6 is hinged to the hammer blade shaft 7.

[0029] In use, the rotating shaft 1 is driven by a motor to rotate, thereby driving the cutter head 2, the fly disc 3, and the tail disc 4 to rotate. The chaff cutter 5 performs initial pulverization of the forage, and the hammer blades 6 further pulverize the forage. The fly disc 3 and the blades 9 can generate airflow, which facilitates the discharge of pulverized forage, thereby improving the pulverization efficiency.

[0030] This application improves the structure of the cutter head 2 and rationally sets the position and number of the chaff cutter 5, hammer 6 and reinforcing rib 8, which can solve the problems of easy clogging, easy damage to bearings and increased energy consumption in the use of existing chaff cutters while ensuring the strength of the cutter head 2.

[0031] Combination Figure 2The four grass penetrating slots 21 are evenly distributed on the cutter head 2, and extend from the edge of the cutter head 2 to the rotating shaft 1. The opening size of the grass penetrating slot 21 at the edge of the cutter head 2 is larger than that near the end close to the rotating shaft 1. In this embodiment, the opening size of the grass penetrating slot 21 at the edge of the cutter head 2 is 18 degrees. This can facilitate the penetration of the grass through the cutter head 2 and prevent the grass from being stuck in the grass penetrating slot 21, while ensuring the strength of the cutter head 2. Further, the end of the grass penetrating slot 21 away from the rotating shaft 1 is arc-shaped, and the overall structure of the cutter head 2 is fan-shaped, which can prevent the grass from being blocked. Further, the four grass penetrating slots 21 divide the cutter head 2 into four fans, and each fan is provided with a set of the cutter 5 and the hammer shaft 7, which are perpendicular to the same plane, and the hammer shaft 7 is staggered with the cutter 5. That is, the cutter 5 and the hammer 6 are installed on the same cutter head 2, which is more conducive to balance and stress. Specifically, the cutter head 2 is provided with screw holes, and the cutter 5 is detachably installed on one side of the grass penetrating slot 21 of the cutter head 2 by bolts, and extends from the outer periphery of the rotating shaft to the edge of the cutter head 2. In this embodiment, the bolts for fixing the cutter 5 are four, of which one is fixed on the cutter head 2 between the rotating shaft 1 and the grass penetrating slot 21, and the other three are fixed on the cutter head 2 on one side of the grass penetrating slot 21. Further, the cutter head 2 is provided with four grass penetrating slots 21, four cutters and four sets of hammers 6, which can improve the grinding efficiency of the grass compared with three sets of cutter heads 2.

[0032] In combination Figure 3 The reinforcing rib 8 and the hammer shaft 7 are installed on the back of the cutter head 2, which is not provided with the cutter 5. The hammer shaft 7 is installed at the middle part of the cutter head 2 and is slightly outward, so that the hammer 6 hinged on the hammer shaft 7 can extend to the space outside the cutter head 2, which is more conducive to grinding the grass. The shape and installation structure of the hammer 6 can refer to the structure of the existing grass grinder. Preferably, the reinforcing rib 8 is installed on the line connecting the hammer shaft 7 and the axis of the rotating shaft 1. During use, the hammer 6 is not easy to be stuck on the reinforcing rib 8 no matter it rotates forward or reversely, and the stress on the reinforcing rib 8 is also better. Further, the reinforcing rib 8 extends outward from the rotating shaft 1, and there is a distance between the reinforcing rib 8 and the hammer shaft 7. During the rotation of the hammer 6 around the hammer shaft 7, the end of the hammer 6 contacts the outer end of the reinforcing rib 8. That is, the reinforcing rib 8 not only has the effect of strengthening the cutter head 2, but also cooperates with the hammer 6 to enhance the secondary grinding effect of the hammer 6. In this application, the reinforcing rib 8 is in the shape of a rectangular sheet, which is fixed by welding with the rotating shaft 1, the cutter head 2, the flying disc 3, the tail disc 4 and the like.

[0033] Further in combination Figure 1 and Figure 4, the flying disc 3 has two, the flying disc 3 close to cutterhead 2 diameter is less than the diameter of another two flying discs 3. It is favorable to form wind power, and the forage is conveyed to the discharge port, and the forage crushing efficiency is further improved. The blade 9 is installed between the flying disc 3 and the tail disc 4, Figure 4 And Figure 5 The blade 9 is inserted at the edge of the flying disc 3 and the tail disc 4. The setting of the blade 9 is more favorable to drive the forage to the discharge port. Preferably, the blade 9 is designed in an inclined manner, that is, the extension line of the blade 9 does not pass through the axis of the rotating shaft 1, but is similar to a spiral design, and the resistance is small, which is more favorable to drive the forage and improve the crushing efficiency.

[0034] In use, the cutterhead 2 assembly of the forage chopper is installed in the crushing cavity of the forage chopper frame, and the rotating shaft 1 of the cutterhead 2 assembly is driven to rotate by the motor. The cutter 5 cuts the forage, the forage passes through the cutter 2 through the forage passing groove 21, and is crushed again under the action of the hammer 6. The setting of the multi-layer hammer 6 is favorable for further crushing of the forage. The design of the multi-layer flying disc 3 and the blade 9 is favorable for discharging the crushed forage from the discharge port of the crushing cavity.

[0035] In summary, the cutterhead 2 assembly of the forage chopper is provided with the forage passing groove 21 penetrating the edge of the cutter 2, and the opening of the forage passing groove 21 at the edge of the cutter 2 is large and gradually narrows towards the rotating shaft 1. Compared with the conventional forage passing hole provided on the cutter 2, the forage passing groove 21 is not easy to be blocked by the forage, which solves the problems of blockage, bearing damage and energy consumption increase in the use of the existing forage chopper. The cutterhead 2 assembly of the forage chopper is provided with an arc-shaped opening on one side of the forage passing groove 21, so that the overall structure of the cutter 2 is fan-shaped, and the cutter 5, the hammer shaft 7 and the reinforcing rib 8 are arranged on each fan blade, which is favorable for balancing and stress, and is favorable for improving the service life of the cutterhead 2 assembly.

[0036] The foregoing description of specific exemplary embodiments of the present application is for the purpose of illustrating and describing the present application. These descriptions do not intend to limit the present application to the precise forms disclosed, and obviously, many changes and variations are possible in light of the above teachings. The exemplary embodiments are chosen and described in order to explain the principles of the present application and its practical application, so that various persons skilled in the art can implement and utilize the present application in various different exemplary embodiments and various different choices and changes. The scope of the present application is intended to be defined by the claims and their equivalents.

Claims

1. A stable chaff cutter assembly, comprising a rotating shaft, a cutter disc, a fly disc, a tail disc, chaff cutters, hammer blades, and hammer blade shafts, wherein the cutter disc, fly disc, and tail disc are sequentially and spaced apart on the rotating shaft, and the hammer blade shafts are respectively installed between the cutter disc and the fly disc, and between the fly disc and the tail disc, characterized in that, The cutter head is provided with forage passing slots at intervals, the forage passing slots extend from the edge of the cutter head to the rotating shaft, and the opening size of the forage passing slots at the edge of the cutter head is larger than that near the end close to the rotating shaft; the cutter head is provided with the cutter and the hammer shaft between the adjacent two forage passing slots, the cutter is installed on one side of the forage passing slot, the hammer shaft is installed on the back of the cutter head, and the installation position of the hammer shaft is staggered with the cutter, and the hammer is hinged to the hammer shaft.

2. The hay conditioner cutterhead assembly of claim 1, wherein, The forage passing slots are 3-6, and the cutters are 3-6 groups.

3. The hay conditioner cutterhead assembly of claim 1, wherein, The end of the forage passing slot away from the rotating shaft and not provided with the cutter is arc-shaped, and the overall structure of the cutter head is fan-shaped.

4. The hay conditioner knife plate assembly of claim 1, wherein, The central angle of the opening of the forage passing slot at the edge of the cutter head and the rotating shaft is 10°-30°.

5. The hay conditioner knife plate assembly of claim 1, wherein, The reinforcing ribs are installed between the cutter head and the flying disc and between the flying disc and the tail disc, and the reinforcing ribs are installed on the connecting line of the hammer shaft and the axis of the rotating shaft.

6. The hay conditioner cutterhead assembly of claim 5, wherein, During the rotation of the hammer around the hammer shaft, the end of the hammer does not contact or partially contacts the reinforcing rib.

7. The hay conditioner knife plate assembly of claim 1, wherein, The flying disc is 1-3.

8. The hay conditioner knife plate assembly of claim 7, wherein, When the number of the flying discs is more than 2, the diameter of the flying disc close to the cutter head is smaller than that of the other flying discs.

9. The hay conditioner knife plate assembly of claim 1, wherein, The blades are installed between the flying disc and the tail disc, and the blades are inserted into the edge of the flying disc and the tail disc.

10. A forage harvester characterized by The cutter head assembly of the forage cutter comprises a rack, a motor and the cutter head assembly of the forage cutter according to any one of claims 1-9, the rack is provided with a crushing cavity, the crushing cavity is provided with an inlet and an outlet, the cutter head assembly of the forage cutter is arranged in the crushing cavity, and the motor is arranged on the rack outside the crushing cavity and used for driving the rotating shaft of the cutter head assembly of the forage cutter.

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