Stone clamping prevention scraper knife for harvester and harvester

Abstract

The stone clamping prevention scraper knife for the harvester comprises a plurality of shovel plates arranged in front of a conveyor belt of the harvester, each shovel plate comprises a fixing plate installed on a rack of the harvester, a plurality of receding plates are arranged between the fixing plate and the end of the conveyor belt, one end of each receding plate is rotationally connected with the fixing plate through a pin shaft, and the other end of each receding plate is rotationally connected with the other end of the conveyor belt through a pin shaft. The hinge pin is arranged on the fixing plate, a variable avoiding area is formed between the other end of the avoiding plate and the end portion of the conveying belt, the hinge pin is provided with a torsional spring which pushes the avoiding plate to enable the upper surface of the avoiding plate to be flush with the upper surface of the fixing plate, most of stuck stones on the conveying belt can be removed, and sorting of crops is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of harvesters, in particular to a stone-blocking-proof shovel blade for harvesters and a harvester. Background Art

[0002] Harvesters are used to harvest root crops, which improves the harvesting efficiency of farming. The harvester's blade scoops up the crops in the field and transfers them to the conveyor belt, which sorts and transfers the crops. The crops are finally sorted out. During the sorting process, stones are easily stuck between two adjacent chain rods of the conveyor belt. When the stones on the conveyor belt travel between the blade and the conveyor belt, the stones will hit the lower surface of the blade, causing the blade to deform or the conveyor belt to jam and stop.

[0003] In the prior art, a transition plate is rotatably arranged at one end of the shovel close to the conveyor belt. When stones on the conveyor belt pass between the shovel and the conveyor belt, the stones push the transition plate to rotate and pass over the transition plate, thereby preventing the shovel from deforming and the conveyor belt from getting stuck and stopping. However, the stones are still stuck on the conveyor belt, affecting the sorting of crops. Utility Model Content

[0004] In order to solve the problem of stones getting stuck on the conveyor belt in the prior art, the utility model provides a stone-blocking shovel blade for a harvester and a harvester, which can remove most of the stones stuck on the conveyor belt and are beneficial to the sorting of crops.

[0005] In order to achieve the above-mentioned purpose, the specific scheme adopted by the utility model is: a stone-preventing shovel blade for a harvester, comprising a plurality of shovel plates arranged in front of a conveyor belt of the harvester, the shovel plates comprising a fixed plate installed on a frame of the harvester, a plurality of avoidance plates are arranged between the fixed plate and the end of the conveyor belt, one end of the avoidance plate is rotatably connected to the fixed plate through a pin shaft so that a variable avoidance zone is formed between the other end of the avoidance plate and the end of the conveyor belt, and a torsion spring is arranged on the pin shaft to push the avoidance plate so that the upper surface of the avoidance plate is flush with the upper surface of the fixed plate.

[0006] As an optimization solution for the above-mentioned anti-stone shovel blade for a harvester: the fixed plate is provided with a plurality of grooves opening toward the conveyor belt, the avoidance plate is provided with a convex plate extending into the groove, the end of the convex plate and the bottom of the groove form a first gap margin for the avoidance plate to rotate, and a second gap margin for the avoidance plate to rotate is formed between the edge of the convex plate and the side wall of the groove.

[0007] As another optimization solution of the above-mentioned anti-stone-jamming shovel blade for a harvester: a first flexible plate connected to the end of the convex plate and used for closing the first gap margin is provided on the surface of the fixed plate.

[0008] As another optimization solution of the above-mentioned anti-stone-jamming shovel blade for a harvester: a second flexible plate connected to the edge of the convex plate and used for closing the second gap margin is provided on the surface of the fixed plate.

[0009] As another optimization solution of the above-mentioned anti-stone-jamming shovel blade for a harvester: the fixing plate is connected to the harvester frame through a curved arm.

[0010] As another optimization scheme of the above-mentioned anti-stone shovel blade for a harvester: one end of the curved arm is fixedly connected to the fixed plate, the other end of the curved arm is vertically fixedly connected to the mounting shaft, and both ends of the mounting shaft are fixedly connected to the harvester frame through hanging plates.

[0011] As another optimization scheme of the above-mentioned anti-stone shovel blade for a harvester: two mounting plates perpendicular to the fixing plate and parallel to each other are arranged on the fixing plate, the pin shaft is located between the two mounting plates, and the two ends of the pin shaft are respectively fixedly connected to the mounting plates.

[0012] As another optimization solution of the above-mentioned anti-stone-jamming shovel blade for a harvester: a plurality of sleeves are rotatably sleeved on the pin shaft, and each avoidance plate is fixedly connected to the side wall of a sleeve through a wedge plate.

[0013] As another optimization scheme of the above-mentioned anti-stone shovel blade for a harvester: a limit block that can rotate with the sleeve is provided on the outer wall of the sleeve, and the limit block can contact the lower surface of the fixed plate during rotation to limit the rotation angle of the avoidance plate.

[0014] A harvester comprises a frame, a conveyor belt and a blade, wherein the blade is the above-mentioned anti-stone blade.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model provides a stone-blocking shovel blade and a harvester for a harvester. When a stone on a conveyor belt moves under a avoidance plate, the avoidance plate is pushed to rotate. The setting of a torsion spring can push the avoidance plate to reset. At the same time, the setting of the torsion spring increases the force required to push the avoidance plate to rotate. The interaction of forces causes a part of the stones on the conveyor belt to fall off, which is beneficial to the sorting of crops.

[0017] 2. In the utility model, a first gap margin and a second gap margin are formed between the convex plate and the groove for the avoidance plate to rotate smoothly. If a small stone enters the first gap margin or the second gap margin, the avoidance plate will be unable to rotate. Therefore, the provision of the first flexible plate and the second flexible plate blocks the first gap margin and the second gap margin, thereby preventing small stones from entering the first gap margin or the second gap margin, ensuring that the avoidance plate can rotate normally, thereby ensuring the normal operation of the harvester. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 is a schematic structural diagram of the scraper in Example 1;

[0020] Figure 3 It is a cross-sectional view of the shovel plate;

[0021] Figure 4 It is a schematic diagram of the structure of the shovel plate during the rotation of the avoidance plate;

[0022] Figure 5 It is a schematic diagram of the shovel plate structure;

[0023] Figure numerals: 1. conveyor belt, 2. fixed plate, 201. groove, 3. avoidance plate, 301. convex plate, 4. curved arm, 401. mounting shaft, 402. hanging plate, 5. variable avoidance area, 6. connecting plate, 601. mounting plate, 602. pin shaft, 603. sleeve, 604. wedge plate, 605. limit block, 7. torsion spring, 8. first gap allowance, 801. first flexible plate, 9. second gap allowance, 901. second flexible plate. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further elaborated in detail below in conjunction with specific embodiments. The parts that are not described and disclosed in detail in the following embodiments of the present invention should be understood as the existing technologies known or should be known to those skilled in the art, such as the connection method of the first flexible board 801 with the fixed board 2 and the convex board 301, the connection method of the second flexible board 901 with the fixed board 2 and the convex board 301, etc.

[0025] Example 1

[0026] A stone-blocking shovel blade for a harvester includes a plurality of shovel plates arranged in front of a conveyor belt 1 of the harvester, wherein the number of shovel plates is 1-6. In this embodiment, the number of shovel plates is 3, and the shovel plates are evenly spaced along the width direction of the conveyor belt 1. Figure 1As shown, the shovel plate includes a fixed plate 2 mounted on the harvester frame, and the fixed plate 2 has a sharp tip at one end away from the conveyor belt 1, which is convenient for the shovel blade to shovel into the ground. The fixed plate 2 is connected to the harvester frame through a crank arm 4. Specifically, one end of the crank arm 4 is fixedly connected to the fixed plate 2, and the other end of the crank arm 4 is vertically fixedly connected to a mounting shaft 401. Both ends of the mounting shaft 401 are fixedly connected to the harvester frame through a hanging plate 402. The end of the crank arm 4 connected to the fixed plate 2 is fixedly connected to a connecting plate 6 parallel to the fixing plate 2. The connecting plate 6 and the end of the crank arm 4 can be connected by welding or bolting. In this embodiment, the connecting plate 6 and the crank arm 4 are connected by welding; the connecting plate 6 is fixedly connected to the fixed plate 2, and the connection method of the two is bolting.

[0027] A plurality of avoidance plates 3 are arranged between the fixed plate 2 and the end of the conveyor belt 1. Specifically, the avoidance plates 3 are rectangular plate-shaped structures. The number of avoidance plates 3 correspondingly arranged on one fixed plate 2 is 1-4. In the present embodiment, the number of avoidance plates 3 arranged on one fixed plate 2 is 2, and the two avoidance plates 3 are arranged along the width direction of the conveyor belt 1. The connection method between the avoidance plates 3 and the fixed plate 2 is that one end of the avoidance plate 3 is fixedly connected to the fixed plate 2 through a pin shaft 602, so that a variable avoidance area 5 is formed between the other end of the avoidance plate 3 and the end of the conveyor belt 1. One fixed plate 2 is provided with a pin shaft 602. Specifically, the fixed plate 2 is provided with two mounting plates 601 that are perpendicular to the fixed plate 2 and parallel to each other. In the present embodiment, the mounting plate 601 is fixedly connected to the connecting plate 6, and the connection method between the two is an integrated connection. The pin shaft 602 is located between the two mounting plates 601, and the two ends of the pin shaft 602 are rotatably connected to the mounting plate 601, respectively, such as Figure 2 As shown, a through hole is provided on the mounting plate 601, and both ends of the pin shaft 602 pass through the corresponding through holes and are interference fit with the through holes, so as to realize the fixed connection between the pin shaft 602 and the mounting plate 601. A plurality of sleeves 603 are rotatably sleeved on the pin shaft 602, and the number of sleeves 603 is the same as the number of avoidance plates 3, that is, one avoidance plate 3 corresponds to one sleeve 603. In this embodiment, two sleeves 603 are sleeved on one pin shaft 602, and each avoidance plate 3 is fixedly connected to the side wall of one sleeve 603 through a wedge plate 604. The avoidance plate 3 and the wedge plate 604 are connected by welding, and the sleeve 603 and the wedge plate 604 are connected by welding. A torsion spring 7 is provided on the pin shaft 602 to push the avoidance plate 3 so that the upper surface of the avoidance plate 3 is flush with the upper surface of the fixed plate 2. As shown Figure 1As shown, when the stone on the conveyor belt 1 moves below the avoidance plate 3, a thrust is applied to the avoidance plate 3 to push it to rotate counterclockwise. The setting of the torsion spring 7 increases the force required to push the avoidance plate 3. The interaction of forces causes a part of the stone on the conveyor belt 1 to fall off, which is beneficial to the subsequent sorting of crops. The remaining part of the stone pushes the avoidance plate 3 to rotate counterclockwise. At this time, the variable avoidance area 5 becomes larger, and the stone passes through the variable avoidance area 5. Then, the avoidance plate 3 is reset under the action of the torsion spring 7, so that the upper surface of the avoidance plate 3 is flush with the upper surface of the fixed plate 2.

[0028] The above is a basic implementation method of the utility model, which can be further improved, optimized and limited on the basis of the above to obtain the following embodiments:

[0029] Example 2

[0030] The present embodiment is an improved scheme for a stone-blocking shovel blade and a harvester for a harvester made on the basis of the embodiment 1, and its main structure is the same as that of the embodiment 1, and the improvement lies in that a limit block 605 which can rotate with the sleeve 603 is provided on the outer wall of the sleeve 603, and the limit block 605 is located below the fixed plate 2. The connection method between the limit block 605 and the sleeve 603 can be bolt connection, welding or integral connection. In the present embodiment, the connection method between the two is welding; the limit block 605 can contact with the lower surface of the fixed plate 2 during rotation to limit the rotation angle of the avoidance plate 3. When the avoidance plate 3 rotates counterclockwise to reset, when the limit block 605 contacts the lower surface of the fixed plate 2, the upper surface of the avoidance plate 3 is flush with the upper surface of the fixed plate 2, so as to avoid the avoidance plate 3 rotating too much counterclockwise and causing the upper surface of the avoidance plate 3 to be lower than the fixed plate 2. The torsion spring 7 and the soil on the avoidance plate 3 apply a downward force to the avoidance plate 3, which can push the avoidance plate 3 to rotate clockwise. When the avoidance plate 3 rotates counterclockwise until the upper surface of the avoidance plate 3 is located below the upper surface of the fixed plate 2, the crops are easy to flow out of the variable avoidance area 5 and cannot move onto the conveyor belt 1. Therefore, the setting of the limit block 605 limits the rotation angle of the avoidance plate 3 to ensure that the upper surface of the avoidance plate 3 is flush with the upper surface of the fixed plate 2.

[0031] Example 3

[0032] This embodiment is an anti-stone shovel blade and an improved solution for a harvester based on the embodiment 1. Its main structure is the same as that of the embodiment 1, and the improvement is as follows: Figure 1 As shown, the fixed plate 2 is provided with a plurality of grooves 201 opening toward the conveyor belt 1, and the number of the grooves 201 is the same as the number of the avoidance plates 3, that is, one groove 201 corresponds to one avoidance plate 3. In this embodiment, one fixed plate 2 is provided with two grooves 201. Figure 5As shown, the avoidance plate 3 is provided with a convex plate 301 extending into the groove 201, and the convex plate 301 is connected to the avoidance plate 3 in an integral manner, and the end of the convex plate 301 and the bottom of the groove 201 form a first clearance margin 8 for the avoidance plate 3 to rotate, and the edge of the convex plate 301 and the side wall of the groove 201 form a second clearance margin 9 for the avoidance plate 3 to rotate. During the shoveling operation, small stones are easy to enter the first clearance margin 8 and the second clearance margin 9, making it impossible for the avoidance plate 3 to rotate normally. Therefore, a first flexible plate 801 connected to the end of the convex plate 301 and used to close the first clearance margin 8 is provided on the surface of the fixed plate 2. The surface of the fixed plate 2 is provided with a second flexible plate 901 connected to the edge of the convex plate 301 and used to close the second gap margin 9. During the rotation of the avoidance plate 3, the first flexible plate 801 and the second flexible plate 901 can be stretched and compressed to ensure the normal rotation of the avoidance plate 3. At the same time, the first gap margin 8 and the second gap margin 9 are blocked, thereby preventing small stones from entering the first gap margin 8 or the second gap margin 9, ensuring that the avoidance plate 3 can rotate normally, thereby ensuring the normal operation of the harvester.

[0033] In other embodiments of the present invention, the first flexible board 801 is filled in the first gap margin 8, and the second flexible board 901 is filled in the second gap margin 9. Figure 3 shown.

[0034] Example 4

[0035] A harvester comprises a frame, a conveyor belt 1 and a blade, wherein the blade is the anti-stone-jamming blade described in any of the above embodiments.

[0036] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stone-blocking shovel blade for a harvester, comprising a plurality of shovel blades arranged in front of a conveyor belt (1) of the harvester, characterized in that: The shovel plate comprises a fixed plate (2) mounted on a harvester frame, a plurality of avoidance plates (3) are arranged between the fixed plate (2) and the end of the conveyor belt (1), one end of the avoidance plate (3) is rotatably connected to the fixed plate (2) via a pin shaft (602), so that a variable avoidance area (5) is formed between the other end of the avoidance plate (3) and the end of the conveyor belt (1), and a torsion spring (7) is arranged on the pin shaft (602) to push the avoidance plate (3) so that the upper surface of the avoidance plate (3) is flush with the upper surface of the fixed plate (2).

2. The anti-stone-jamming blade for a harvester according to claim 1, characterized in that: The fixed plate (2) is provided with a plurality of grooves (201) with openings facing the conveyor belt (1); the avoidance plate (3) is provided with a convex plate (301) extending into the groove (201); the end of the convex plate (301) and the bottom of the groove (201) form a first clearance margin (8) for the avoidance plate (3) to rotate; and the edge of the convex plate (301) and the side wall of the groove (201) form a second clearance margin (9) for the avoidance plate (3) to rotate.

3. The anti-stone-stuck blade for a harvester according to claim 2, characterized in that: The surface of the fixing plate (2) is provided with a first flexible plate (801) connected to the end of the convex plate (301) and used to close the first gap margin (8).

4. The anti-stone-jamming blade for a harvester according to claim 2, characterized in that: The surface of the fixed plate (2) is provided with a second flexible plate (901) connected to the edge of the convex plate (301) and used to close the second gap margin (9).

5. The anti-stone-jamming blade for a harvester according to claim 1, characterized in that: The fixing plate (2) is connected to the harvester frame via a curved arm (4).

6. The anti-stone-jamming blade for a harvester according to claim 5, characterized in that: One end of the crank arm (4) is fixedly connected to the fixing plate (2), and the other end of the crank arm (4) is vertically fixedly connected to a mounting shaft (401), and both ends of the mounting shaft (401) are fixedly connected to the harvester frame via a hanging plate (402).

7. The anti-stone-jamming blade for a harvester according to claim 1, characterized in that: The fixing plate (2) is provided with two mounting plates (601) which are perpendicular to the fixing plate (2) and parallel to each other. The pin shaft (602) is located between the two mounting plates (601), and both ends of the pin shaft (602) are respectively fixedly connected to the mounting plates (601).

8. The anti-stone-jamming blade for a harvester according to claim 1, characterized in that: A plurality of sleeves (603) are rotatably sleeved on the pin shaft (602), and each avoidance plate (3) is fixedly connected to a side wall of a sleeve (603) via a wedge plate (604).

9. The anti-stone-jamming blade for a harvester according to claim 8, characterized in that: A limit block (605) capable of rotating with the sleeve (603) is arranged on the outer side wall of the sleeve (603); during the rotation process, the limit block (605) can contact the lower surface of the fixed plate (2) to limit the rotation angle of the avoidance plate (3).

10. A harvester, comprising a frame, a conveyor belt (1) and a blade, characterized in that: The scraper is the anti-stone scraper as described in any one of claims 1 to 9.

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