Hay cutter grass feeding mechanism capable of avoiding grass winding

Abstract

The utility model provides a hay cutter grass feeding mechanism capable of avoiding grass winding, which belongs to the technical field of agricultural machinery and comprises a rack and a first conveying mechanism arranged on the rack, a movable frame is arranged above the rack corresponding to the first conveying mechanism, and a second conveying mechanism is arranged on the movable frame. The first conveying mechanism and the second conveying mechanism are the same in rotating speed and rotating direction, and the end part of the second conveying mechanism can extrude and feed forage above the first conveying mechanism; according to the forage conveying device, forage can be extruded in the forage conveying process, and the forage cannot be wound on the rollers, so that the forage processing efficiency is indirectly improved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery and equipment technology, specifically to a grass-feeding mechanism for a grass cutter that does not get tangled in grass. Background Technology

[0002] In forage harvesting and straw processing operations, traditional forage feeders mainly employ a conveyor belt combined with a double-roller compression conveying structure. Its core working principle is to transport the forage to the cutting area via the conveyor belt, where the upper and lower rollers pre-compress the forage, theoretically improving cutting efficiency. However, in actual operation, this structure has revealed significant technical shortcomings:

[0003] The mechanical winding mechanism involves the elastic deformation of long-stemmed crops (length > 40cm) as they pass through the gaps between the rollers. According to materials mechanics analysis, the stems undergo radial deformation exceeding 30% at the compression points, resulting in multi-point contact between the fibrous tissue and the metal roller surface. Combined with the continuous conveying force of the conveyor belt, the stems exhibit a spiral winding tendency, with a measured winding probability of 68%-75%.

[0004] The humid environment exacerbates the effect. When working in the morning before the dew has dried or after rain, if the moisture content of the hay exceeds 25%, its surface tension coefficient increases by 2.3 times. At this time, the hay not only easily adheres to the roller surface, but also generates a "vacuum adsorption" effect during the extrusion process. Experimental data shows that the probability of entanglement is 42% higher in a humid environment than in a dry environment, and the amount of entangled hay increases by 1.8 times.

[0005] If the straw gets tangled on the rollers, the machine must be stopped immediately to clean it, which takes about 10 minutes on average. Reducing the frequency of cleaning the rollers can indirectly improve the processing efficiency of the straw. Utility Model Content

[0006] In view of this, the present invention provides a grass feeding mechanism for a grass cutter that does not get tangled with grass. The present invention can compress the grass during the grass feeding process, and the grass will not get tangled on the rollers, thereby indirectly improving the efficiency of grass processing.

[0007] To solve the above-mentioned technical problems, this utility model provides a grass feeding mechanism for a grass cutter that does not get tangled with grass. It includes a frame and a first conveying mechanism installed on the frame. A movable frame is provided above the frame corresponding to the first conveying mechanism. A second conveying mechanism is installed on the movable frame. The second conveying mechanism is located at the end of the conveying direction of the first conveying mechanism. The first conveying mechanism and the second conveying mechanism have the same rotation speed and rotation direction. The end of the second conveying mechanism can squeeze and feed the grass above the first conveying mechanism.

[0008] Both the first and second conveyor mechanisms are tracked conveyor belts, which can prevent the grass from getting tangled.

[0009] The first transmission mechanism includes two first rotating rods. The rotation of the first rotating rods can drive the first transmission mechanism to work. The end of the first rotating rod is provided with a driving gear. The second transmission mechanism includes two second rotating rods. The rotation of the second rotating rods can drive the second transmission mechanism to work. The end of the second rotating rod is provided with a driven gear. The driving gear and the driven gear are connected in a transmission connection. The first transmission mechanism and the second transmission mechanism can work together.

[0010] A cover is installed on the corresponding movable frame to protect the second conveying mechanism.

[0011] The end of the first rotating rod is also provided with a fixed plate via a bearing. The first rotating rod can rotate within the fixed plate. The fixed plate is provided with an intermediate rod, which is parallel to the axis of the first rotating rod. An intermediate gear is rotatably provided at the end of the intermediate rod. The intermediate gear meshes with the driving gear, and the driving gear can drive the intermediate rod and the intermediate gear to rotate.

[0012] The fixed plate is also equipped with a connecting rod, on which a transmission gear is rotatably mounted. The transmission gear meshes with the intermediate gear and the driven gear, and the driving gear can drive the driven gear to rotate through the intermediate gear and the transmission gear.

[0013] The end of the movable frame away from the fixed plate is provided with a connecting frame by hinge. The connecting frame has a U-shaped structure, and the top of the connecting frame is placed on the top of the cover.

[0014] The end of the second rotating rod is provided with a connecting ring that can rotate. The second rotating rod can rotate within the connecting ring. A connecting plate is provided on the connecting ring. The connecting rod is fixedly connected to the connecting plate. Through the connecting plate and the connecting ring, the second rotating rod can rotate around the axis of the connecting rod. The driven gear and the transmission gear are always in a meshing state.

[0015] The frame sidewall is equipped with a support member, and a tension spring is connected between the support member and the connecting ring. The tension spring can provide tension to the second conveying mechanism, thereby increasing the extrusion force on the forage.

[0016] The end of the movable frame away from the fixed plate is also equipped with a compression roller corresponding to the first conveying mechanism, which is used to pre-compress the forage.

[0017] The extrusion roller has connecting parts at both ends that rotate. The connecting parts are fixed to the movable frame by bolts. The extrusion roller can be disassembled for maintenance or cleaning through the connecting parts.

[0018] The connecting frame is located directly above the extrusion roller. The connecting frame is also provided with several threaded holes. The connecting parts can be fixed on the connecting frame, which can change the height of the extrusion roller to pre-extrude different forages.

[0019] The end of the extrusion roller is also equipped with a linkage gear, which is connected to the driven gear by a chain, and the second conveying mechanism can rotate together with the extrusion roller.

[0020] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0021] 1. Anti-entanglement conveyor system: Replacing the roller structure with an upper and lower aligned tracked conveyor belt, the compression method changes from line contact compression by rollers to surface compression by the bottom of the second conveyor belt, effectively increasing the contact area with the forage and dispersing compression stress. Combined with synchronous drive technology, the two tracks maintain a constant speed difference of 0.3-0.5 m / s, ensuring continuous conveying while avoiding the point-contact entanglement of traditional rollers. Field trials have verified that the probability of entanglement is reduced by 82% in the processing of flexible crops such as reeds.

[0022] 2. Adaptive Elastic Extrusion Mechanism: The movable frame is flexibly connected to the machine frame via tension springs, forming a floating extrusion head. The second conveying mechanism can extrude the forage by its own weight, and the springs can also provide additional tension to the second conveying mechanism, thereby increasing the extrusion force on the forage.

[0023] When encountering lumpy forage, the spring compression automatically adjusts (adjustment range 0-80mm), ensuring compression effectiveness while preventing fiber breakage and tangling caused by rigid extrusion. This structure allows the equipment to adapt to forage with different moisture contents (15%-35%), increasing conveying efficiency by 65% ​​in humid environments.

[0024] 3. Modular Pre-compression Component: The compression rollers feature a three-stage height adjustment design (achieved through threaded holes in the connecting frame), allowing selection of the optimal compression ratio based on the crop stalk diameter (φ8-40mm). Combined with a linkage gear transmission system, the pre-compression process is seamlessly integrated with the main conveyor, increasing the density of the forage before cutting by 30% while preventing secondary entanglement during pre-compression.

[0025] 4. All-condition operation capability: The enclosed enclosure structure combined with the tracked conveyor effectively prevents grass clippings from flying and is suitable for operation on slopes (≤15°). In a continuous 8-hour high-load test, the equipment maintained 98.6% operational continuity, achieving a 52% efficiency improvement compared to traditional equipment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the feeding mechanism of a grass cutter that does not get tangled with grass, according to the present invention.

[0027] Figure 2 This utility model Figure 1 Schematic diagram of the structure at point A;

[0028] Figure 3This is a top view of the structure of this utility model;

[0029] Figure 4 This utility model Figure 3 Schematic diagram of the structure at point B;

[0030] Figure 5 This utility model Figure 3 A schematic diagram of the structure at point C.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100. Frame; 101. First conveying mechanism; 102. First rotating rod; 103. Drive gear;

[0033] 200. Movable frame; 201. Second conveying mechanism; 202. Second rotating rod; 203. Driven gear; 204. Linkage gear;

[0034] 300. Fixed plate; 301. Intermediate rod; 302. Intermediate gear; 303. Connecting rod; 304. Transmission gear;

[0035] 400. Connecting ring; 401. Connecting plate; 402. Support component; 403. Tension spring;

[0036] 500, Connecting frame; 501, Extrusion roller; 502, Connecting piece; 503, Threaded hole. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-5 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0038] This embodiment provides a grass-feeding mechanism for a grass cutter that does not tangle with grass, such as Figure 1 , 3As shown: It includes a frame 100 and a first conveyor 101 horizontally arranged on the frame 100. The first conveyor 101 is a tracked conveyor. The hay can be placed on the first conveyor 101. When the first conveyor 101 is working, it can transport the hay. A movable frame 200 is also provided above the end of the first conveyor 101 in the conveying direction. A second conveyor 201 is provided on the movable frame 200. The second conveyor 201 is also a tracked conveyor and rotates in the same direction as the first conveyor 101. So when the hay moves from the first conveyor 101 to below the second conveyor 201, the second conveyor 201 can squeeze the hay from above, which facilitates the subsequent cutting of the hay.

[0039] The frame is also equipped with a cover, which can be used to protect the second conveying mechanism. This prevents personnel from accidentally touching the second conveying mechanism from the outside and also prevents the straw from flying out of the equipment.

[0040] Specifically, the first transmission mechanism 101 includes two first rotating rods 102 rotatably mounted on the frame 100. Each first rotating rod 102 has a drive gear 103 at its end. Rotation of the first rotating rod 102 can drive the first transmission mechanism 101 to work. The second transmission mechanism 201 includes two second rotating rods 202 rotatably mounted on the movable frame 200. Rotation of the two second rotating rods 202 can drive the second transmission mechanism to work. Each second rotating rod 202 has a driven gear 203 at its end.

[0041] The driving gear 103 and the driven gear 203 are connected in a transmission manner, such as... Figure 2 , 4As shown: A fixed plate 300 is rotatably mounted on the end of the first rotating rod 102 near the second conveying mechanism 201 via a bearing, allowing the first rotating rod 102 to rotate within the fixed plate 300. The fixed plate 300 has an L-shaped cross-section. An intermediate rod 301 is also mounted on the fixed plate 300, with an intermediate gear 302 rotatably mounted at its end. A connecting rod 303 is also mounted on the fixed plate 300, with a transmission gear 304 rotatably mounted on the connecting rod 303. The intermediate rod 301 is located between the connecting rod 303 and the first rotating rod 102. The transmission gear 304 on the connecting rod 303 is located at the intermediate gear 302. The driving gear 103 and the driven gear 2... 03. The intermediate gear 302 and the transmission gear 304 are of the same size and model. The intermediate gear 302 meshes with the driving gear 103 and the transmission gear 304 respectively. The transmission gear 304 meshes with the intermediate gear 302 and the driven gear 203 respectively. The first rotating rod 102 is connected to the external driving device. That is, the driving gear 103 can indirectly drive the driven gear 203 to rotate through the intermediate gear 302 and the transmission gear 304. The rotation direction of the driven gear 203 is the same as the rotation direction of the driving gear 103. The first transmission mechanism 101 and the second transmission mechanism 201 can be driven to rotate synchronously through a single driving source.

[0042] The cover also has a through hole corresponding to the connecting rod. The connecting rod can pass through the through hole and be fixed to the cover, thereby indirectly limiting the position of the fixing plate, which in turn fixes the position of the driven gear and the transmission gear.

[0043] It is worth mentioning that the end of the movable frame 200 away from the fixed plate 300 is also hinged to a connecting frame 500. The connecting frame 500 has a U-shaped structure, and its top can naturally hang down to the upper surface of the cover. At the same time, both ends of the second rotating rod 202 closest to the fixed plate 300 are equipped with connecting rings 400 via bearings, allowing the second rotating rod 202 to rotate within the connecting rings 400. Figure 4As shown: A connecting plate 401 is provided on the connecting ring 400. The connecting plate 401 has a triangular cross-section. The end of the connecting rod 303 extends to the other side of the first transmission mechanism and is fixed on the connecting plate 401. The connecting plate 401 and the connecting ring 400 can also ensure that the distance between the second rotating rod 202 and the connecting rod 303 is always the same. That is, the second rotating rod closest to the fixed plate will rotate around the axis of the connecting rod. The driven gear 203 and the transmission gear 304 can always maintain a meshing state. A support member 402 is also provided on the side wall of the frame 100. A tension spring 403 is provided between the support member 402 and the connecting ring 400. That is, the tension spring 403 can always pull the end of the second conveying mechanism 201 downward. The second conveying mechanism can squeeze the grass by its own weight. The spring can also provide additional tension to the second conveying mechanism, thereby increasing the squeezing force on the grass. When encountering blocky grass, the spring can automatically adjust the height of the end of the second conveying mechanism 201.

[0044] Furthermore, the movable frame 200 is also equipped with a rotatable extrusion roller 501, such as... Figure 1 , 3 As shown in Figure 5, the extrusion roller 501 can pre-extrude the straw that is about to enter the second conveying mechanism 201. The two ends of the extrusion roller 501 are provided with connecting parts 502. The connecting parts 502 are fixed to the movable frame 200 by bolts, which makes it easy to disassemble and assemble the extrusion roller 501, and thus makes it easy to maintain or clean the extrusion roller 501.

[0045] The extrusion roller 501 is located directly below the connecting frame 500. The connecting frame 500 is also provided with several sets of threaded holes 503, that is, the connecting piece 502 can be removed from the movable frame 200 and fixed on the connecting frame 500. In this way, the height of the extrusion roller 501 can be adjusted, thereby enabling pre-extrusion of different forages or adjustment of the pre-extrusion thickness.

[0046] Furthermore, the end of the extrusion roller is also provided with a linkage gear 204, which is connected to the driven gear 203 by a chain. The linkage gear 204 and the driven gear 203 are the same size and model, that is, the extrusion roller 501 can be made to rotate synchronously with the first rotating rod 102 and the second rotating rod 202 through the linkage gear 204.

[0047] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A grass-throwing mechanism for a hay conditioner that does not throw grass, characterized by: The system includes a frame (100) and a first conveying mechanism (101) provided on the frame (100). A movable frame (200) is provided above the frame (100) corresponding to the first conveying mechanism (101). A second conveying mechanism (201) is provided on the movable frame (200). The first conveying mechanism (101) and the second conveying mechanism (201) have the same rotation speed and rotation direction. The end of the second conveying mechanism (201) can squeeze and feed the forage above the first conveying mechanism (101).

2. The grass feeding mechanism of a grass cutter that does not tangle grass as described in claim 1, characterized in that: Both the first conveyor (101) and the second conveyor (201) are tracked conveyor belts.

3. A grass-unwinding hay-chopper grass-feeding mechanism according to claim 1 or 2, characterized in that: The first conveying mechanism (101) includes two first rotating rods (102), and the end of the first rotating rod (102) is provided with a driving gear (103). The second conveying mechanism (201) includes two second rotating rods (202), and the end of the second rotating rod (202) is provided with a driven gear (203). The driving gear (103) and the driven gear (203) are connected in a transmission.

4. A grass-unwinding hay-cutter grass-feeding mechanism according to claim 3, characterized in that: The frame (100) is provided with a cover corresponding to the movable frame (200), and the cover is used to protect the second conveying mechanism (201).

5. A grass-unwinding hay-cutter grass-feeding mechanism according to claim 4, characterized in that: The end of the first rotating rod (102) is also provided with a fixed plate (300) via a bearing. The fixed plate (300) is provided with an intermediate rod (301). An intermediate gear (302) is rotatably provided on the intermediate rod (301). The intermediate gear (302) meshes with the driving gear (103). The fixed plate (300) is also provided with a connecting rod (303), and a transmission gear (304) is rotatably provided on the connecting rod (303). The transmission gear (304) meshes with the intermediate gear (302) and the driven gear (203). The corresponding connecting rod (303) also has a through hole on the cover, through which the connecting rod (303) passes and connects to the cover.

6. A grass-unwinding hay-cutter grass-feeding mechanism according to claim 5, characterized in that: The movable frame (200) is provided with a connecting frame (500) at one end away from the fixed plate (300) by a hinge. The connecting frame (500) has a U-shaped structure and the top of the connecting frame (500) is placed on the top of the cover. The end of the second rotating rod (202) is provided with a connecting ring (400) by rotation, and a connecting plate (401) is provided on the connecting ring (400). The connecting rod (303) is fixedly connected to the connecting plate (401). The frame (100) has a support member (402) on its side wall, and a tension spring (403) is connected between the support member (402) and the connecting ring (400).

7. A grass-unwinding hay conditioner grass-feeding mechanism according to claim 6, characterized in that: The end of the movable frame (200) away from the fixed plate (300) is also provided with a squeezing roller (501) corresponding to the first conveying mechanism (101), and the squeezing roller (501) is used to pre-squeeze the grass.

8. A grass-unwinding hay-cutter grass-feeding mechanism according to claim 7, characterized in that: The extrusion roller (501) has connecting parts (502) rotatably mounted at both ends, and the connecting parts (502) are fixed to the movable frame (200) by bolts.

9. A grass-unwinding hay conditioner grass-feeding mechanism according to claim 8, characterized in that: The connecting frame (500) is located directly above the extrusion roller (501). The connecting frame (500) is also provided with several threaded holes (503), and the connecting piece (502) can be fixed on the connecting frame (500).

10. A grass-unwinding hay-cutter grass-feeding mechanism according to claim 7, characterized in that: The end of the extrusion roller (501) is also provided with a linkage gear (204), and the linkage gear (204) is connected to the driven gear (203) by a chain.

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