Harvesting height adjusting device of Chinese chive harvester

Abstract

The utility model relates to the technical field of Chinese chive harvesters, in particular to a harvesting height adjusting device of a Chinese chive harvester, which comprises a mounting frame, a screw rod is rotatably connected to the inner wall of the mounting frame, a first servo motor is fixedly connected to the top of the mounting frame, and an output shaft of the first servo motor is fixedly connected to the top end of the screw rod. The surface of the lead screw is in threaded connection with a sliding block. The adjusting mechanism is arranged on the surface of the sliding block; according to the device, by means of a distance sensor, a lead screw and a first servo motor, accurate adjustment of the positions of a sliding block and a working frame is achieved, then the accuracy of adjustment of the specific height of a harvesting cutter and a right-angle blade is guaranteed, and therefore the Chinese chive harvesting effect is guaranteed; clamping and stopping of the rotating lead screw are achieved, then movement of a harvesting cutter and a right-angle blade is stopped, and the harvesting height adjusting accuracy of the harvester is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of leek harvesters, in particular to a harvesting height adjusting device for leek harvesters. Background Art

[0002] With the advancement of agricultural modernization, the country pays more and more attention to the development of agricultural mechanization. Among them, leek is a common vegetable, which is planted all over the country because of its strong adaptability. However, the leek harvesting methods in different regions are different, including manual harvesting, semi-automatic harvesting and automatic harvesting. In order to improve the efficiency of leek harvesting, leek harvesters are usually used. In order to harvest leek plants of different heights, the height of the harvesting knife on the leek harvester is usually adjusted.

[0003] The Chinese patent "A leek harvesting machine" authorization announcement number "CN217936549U" realizes the adjustment of the blade height through the second motor, threaded shaft and transmission belt, which facilitates better harvesting of leeks and is highly practical.

[0004] When the above-mentioned blade is used to harvest leeks of different heights, it is difficult to accurately adjust the specific height of the blade only through the second motor and the threaded shaft, thereby affecting the harvesting effect of the leeks.

[0005] Therefore, a leek harvester harvesting height adjustment device is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a harvesting height adjustment device for a leek harvester in order to solve the above-mentioned problem, thereby improving the problem that it is difficult to accurately adjust the specific height of the blade.

[0007] The utility model achieves the above-mentioned purpose through the following technical solutions: a harvesting height adjustment device for a leek harvester, comprising: a mounting frame, the inner wall of the mounting frame is rotatably connected with a screw rod, the top of the mounting frame is fixedly connected with a first servo motor, the output shaft of the first servo motor is fixedly connected to the top of the screw rod, and the surface of the screw rod is threadedly connected with a slider; an adjustment mechanism, the adjustment mechanism is arranged on the surface of the slider; wherein the adjustment mechanism comprises a working frame fixedly connected to both sides of the slider, the top of the working frame is fixedly connected with a second servo motor, the inner wall of the working frame is rotatably connected with a harvesting knife, the top of the harvesting knife is fixedly connected to the output shaft of the second servo motor, the bottom of the working frame is fixedly connected with a right-angle blade, and the bottom of the working frame is fixedly connected with a distance sensor. By using the distance sensor, the screw rod and the first servo motor, the position of the slider and the working frame is accurately adjusted, thereby ensuring the accuracy of adjusting the specific height of the harvesting knife and the right-angle blade, thereby ensuring the effect of leek harvesting.

[0008] Preferably, an electric push rod is fixedly connected to one side of the mounting frame, a moving block is fixedly connected to the telescopic end of the electric push rod, two moving holes are opened on the top of the moving block, the surfaces of the two moving holes are axisymmetric, and a friction block is slidably connected to the inner wall of the moving hole. The distance sensor, the electric push rod, the moving block and the friction block are used to clamp and stop the rotating screw rod, thereby stopping the movement of the harvesting knife and the right-angle blade, thereby improving the accuracy of adjusting the harvesting height of the harvester.

[0009] Preferably, the top and bottom of the slider are fixedly connected with a sealing bellows, the other end of the sealing bellows is fixedly connected to the end of the mounting frame, and the surface of the screw rod is located on the inner wall of the sealing bellows. The sealing bellows is used to achieve sealing protection of the screw rod, avoid dust and impurities adhering to the screw rod, reduce the wear of the screw rod and the slider, and thus ensure the accuracy of adjusting the height of the harvesting knife and the right-angle blade.

[0010] Preferably, an oil groove is provided in the slider, and an oil inlet pipe is provided on the top of the slider. The oil inlet pipe is generally funnel-shaped at the top and tubular at the bottom. The tubular portion of the oil inlet pipe passes through the slider and is connected to the oil groove. The oil inlet pipe and the oil groove are used to add lubricating oil to the surface of the screw rod, ensuring smooth movement between the screw rod and the slider, thereby reducing the error in adjusting the height of the harvesting knife and the right-angle blade.

[0011] Preferably, the bottom of the working frame is fixedly connected with an anti-collision frame, the inner bottom wall of the anti-collision frame is fixedly connected with a transparent cover, and the surface of the distance sensor is located inside the anti-collision frame. The anti-collision frame and the transparent cover are used to protect the distance sensor and reduce damage to the distance sensor, thereby ensuring the accuracy of adjusting the height of the harvesting knife and the right-angle blade.

[0012] Preferably, a guide rod is fixedly connected to the top of the mounting frame, and the inner wall of the friction block is slidably connected to the surface of the guide rod. The guide rod is used to limit the movement of the friction block and prevent the friction block from deviating during movement.

[0013] Preferably, a sliding rod is fixedly connected to the end of the mounting frame, and the inner wall of the slider is slidably connected to the surface of the sliding rod. The sliding rod is used to limit the movement of the slider, thereby preventing the slider from deviating during movement.

[0014] Preferably, a sealing plug is provided at the upper funnel opening of the oil inlet pipe. The sealing plug is used to seal the oil inlet pipe and prevent impurities from entering the screw rod surface through the oil inlet pipe and the oil groove.

[0015] The beneficial effects of the utility model are:

[0016] 1. The distance sensor, the lead screw and the first servo motor are used to achieve accurate adjustment of the position of the slider and the work frame, thereby ensuring the accuracy of adjusting the specific height of the harvesting knife and the right-angle blade, thereby ensuring the effect of leek harvesting. The distance sensor, the electric push rod, the moving block and the friction block are used to clamp the rotating lead screw, thereby stopping the movement of the harvesting knife and the right-angle blade, and improving the accuracy of adjusting the harvesting height of the harvester;

[0017] 2. The sealing bellows are used to achieve sealing protection for the screw rod, avoid dust and impurities adhering to the screw rod, reduce the wear of the screw rod and the slider, and use the oil inlet pipe and oil groove to add lubricating oil to the surface of the screw rod, ensure the smoothness between the screw rod and the slider, and thus ensure the accuracy of adjusting the height of the harvesting knife and the right-angle blade. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 It is a schematic diagram of the adjustment mechanism, the first servo motor and the screw rod structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the adjustment mechanism of the utility model;

[0021] Figure 4 for Figure 3 A is an enlarged view of the middle image.

[0022] In the figure: 1. mounting frame; 2. screw rod; 3. first servo motor; 4. slider; 5. adjusting mechanism; 51. working frame; 52. second servo motor; 53. harvesting knife; 54. right-angle blade; 55. distance sensor; 56. electric push rod; 57. moving block; 58. moving hole; 59. friction block; 510. sealing bellows; 511. oil groove; 512. sealing plug; 513. oil inlet pipe; 514. anti-collision frame; 515. transparent cover; 516. slide rod; 517. guide rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] When implementing: Figure 1-4As shown, a harvesting height adjustment device for a leek harvester comprises: a mounting frame 1, the inner wall of the mounting frame 1 is rotatably connected to a screw rod 2, the top of the mounting frame 1 is fixedly connected to a first servo motor 3, the output shaft of the first servo motor 3 is fixedly connected to the top of the screw rod 2, the surface of the screw rod 2 is threadedly connected to a slider 4; an adjustment mechanism 5, the adjustment mechanism 5 is arranged on the surface of the slider 4; wherein the adjustment mechanism 5 comprises a working frame 51 fixedly connected to both sides of the slider 4, the top of the working frame 51 is fixedly connected to a second servo motor 52, the inner wall of the working frame 51 is rotatably connected to a harvesting knife 53, the top of the harvesting knife 53 is fixedly connected to the output shaft of the second servo motor 52, A right-angle blade 54 is fixedly connected to the bottom of the working frame 51, a distance sensor 55 is fixedly connected to the bottom of the working frame 51, an electric push rod 56 is fixedly connected to one side of the mounting frame 1, a moving block 57 is fixedly connected to the telescopic end of the electric push rod 56, two moving holes 58 are opened on the top of the moving block 57, the surfaces of the two moving holes 58 are axially symmetrical, and the inner walls of the moving holes 58 are slidably connected to the friction blocks 59, a guide rod 517 is fixedly connected to the top of the mounting frame 1, the inner wall of the friction block 59 is slidably connected to the surface of the guide rod 517, a sliding rod 516 is fixedly connected to the end of the mounting frame 1, and the inner wall of the slider 4 is slidably connected to the surface of the sliding rod 516.

[0025] The mounting frame 1 is fixed to the harvester by bolts.

[0026] It should be noted that the friction block 59, the first servo motor 3, the second servo motor 52, the distance sensor 55 and the electric push rod 56 in the above description are all relatively mature devices in the existing technology. The specific models can be selected according to actual needs. At the same time, the first servo motor 3, the second servo motor 52, the distance sensor 55 and the electric push rod 56 can be powered by a built-in power supply or by AC power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0027] When it is necessary to adjust the height at which the harvester harvests leeks, the two distance sensors 55 are manually turned on. The distance sensors 55 measure the roots of the leeks to control the specific distance that the slider 4 moves downward. One of the distance sensors 55 controls the automatic start of the first servo motor 3. The output shaft of the first servo motor 3 rotates to drive the screw rod 2 to rotate. The rotation of the screw rod 2 drives the slider 4 to move downward to a suitable position. The downward movement of the slider 4 drives the working frame 51, the harvesting knife 53 and the right-angle blade 54 to move downward to a suitable position. The other distance sensor 55 controls the electric push rod 56 to automatically start. The telescopic end of the electric push rod 56 moves to drive the moving block 57 to move. The movement of the two moving holes 58 drives the two friction blocks 59 to approach each other to clamp the rotating screw rod 2. At this time, one of the distance sensors 55 controls the first servo motor 3 to automatically turn off. At this time, the telescopic end of the electric push rod 56 drives the friction block 59 away from the screw rod 2. The electric push rod 56 is controlled to close automatically, so that the heights of the harvesting knife 53 and the right-angle blade 54 are adjusted accurately. At this time, the harvester moves and the second servo motor 52 is manually turned on. The right-angle blade 54 contacts the root of the leek. The output shaft of the second servo motor 52 rotates to drive the harvesting knife 53 to rotate (because the surface shape of the harvesting knife 53 is a quadrangle and the sides of the harvesting knife 53 and the right-angle blade 54 are both inclined surfaces, so that the contact area between the harvesting knife 53 and the root of the leek is reduced, thereby reducing the resistance during cutting). The rotating harvesting knife 53 cooperates with the stationary right-angle blade 54, so as to quickly cut the root of the leek. At the same time, the stationary right-angle blade 54 and the rotating harvesting knife 53 use the shearing force to shear the leek in the middle, thereby preventing the leek from tipping to one side, so that the harvester can subsequently collect the sheared leek. After the leek is no longer needed to be harvested, the harvester stops moving and the second servo motor 52 is turned off.

[0028] like Figure 4 As shown, the top and bottom of the slider 4 are fixedly connected with a sealing bellows 510, the other end of the sealing bellows 510 is fixedly connected to the end of the mounting frame 1, the surface of the screw rod 2 is located on the inner wall of the sealing bellows 510, an oil groove 511 is provided in the slider 4, and an oil inlet pipe 513 is provided on the top of the slider 4. The oil inlet pipe 513 is generally funnel-shaped at the top and tubular-shaped at the bottom. The tubular portion of the oil inlet pipe 513 passes through the slider 4 and is connected to the oil groove 511, and a sealing plug 512 is provided at the upper funnel opening of the oil inlet pipe 513.

[0029] The moving slider 4 stretches one of the sealing bellows 510 and squeezes the other sealing bellows 510 , so that the two sealing bellows 510 always provide sealing protection for the screw rod 2 .

[0030] When it is necessary to lubricate the screw rod 2 and the slider 4, pull the sealing plug 512 to open the funnel opening at the top of the oil inlet pipe 513, and pour the lubricating oil into the oil inlet pipe 513. The lubricating oil in the oil inlet pipe 513 flows into the surface of the screw rod 2 through the oil groove 511 to lubricate the slider 4 and the screw rod 2. After the lubrication is completed, push the sealing plug 512 so that the lower end of the sealing plug 512 is inserted into the funnel opening at the top of the oil inlet pipe 513.

[0031] like Figure 2 As shown, the bottom of the work frame 51 is fixedly connected with an anti-collision frame 514, the inner bottom wall of the anti-collision frame 514 is fixedly connected with a transparent cover 515, and the surface of the distance sensor 55 is located inside the anti-collision frame 514. The anti-collision frame 514 and the transparent cover 515 protect the distance sensor 55 and prevent impurities from hitting the distance sensor 55.

[0032] When the utility model is in use, two distance sensors 55 are manually turned on, and the distance sensors 55 measure the root of the leek to control the specific distance that the slider 4 moves downward. One of the distance sensors 55 controls to automatically turn on the first servo motor 3, and the output shaft of the first servo motor 3 rotates through the screw rod 2, the slider 4 and the working frame 51 to drive the harvesting knife 53 and the right-angle blade 54 to move downward to a suitable position, and the other distance sensor 55 controls the electric push rod 56 to automatically turn on, and the telescopic end of the electric push rod 56 moves through the moving block 57 and the moving hole 58 to drive the two friction blocks 59 to approach each other to clamp the rotating screw rod 2. At this time, one of the distance sensors 55 controls the first servo motor 3 to automatically turn off, and at this time, the telescopic end of the electric push rod 56 drives the friction block 59 away from the screw rod 2, and the other distance sensor 55 controls the electric push rod 56 to automatically turn off, so that the harvesting The heights of the cutting knife 53 and the right-angle blade 54 are adjusted accurately. At this time, the harvester moves and manually starts the second servo motor 52. The right-angle blade 54 contacts the root of the leek, and the output shaft of the second servo motor 52 rotates to drive the harvesting knife 53 to rotate (because the surface shape of the harvesting knife 53 is a quadrangle and the sides of the harvesting knife 53 and the right-angle blade 54 are both inclined surfaces, so that the contact area between the harvesting knife 53 and the root of the leek is reduced, thereby reducing the resistance during cutting). The rotating harvesting knife 53 cooperates with the stationary right-angle blade 54 to quickly cut the root of the leek. At the same time, the stationary right-angle blade 54 and the rotating harvesting knife 53 use the shearing force to shear the leek in the middle, thereby preventing the leek from tipping to one side, so that the harvester can subsequently gather the sheared leek. After the leek is no longer needed to be harvested, the harvester stops moving and the second servo motor 52 is turned off.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A harvesting height adjustment device for a leek harvester, characterized in that: include: A mounting frame (1), wherein the inner wall of the mounting frame (1) is rotatably connected to a screw rod (2), the top of the mounting frame (1) is fixedly connected to a first servo motor (3), the output shaft of the first servo motor (3) is fixedly connected to the top of the screw rod (2), and the surface of the screw rod (2) is threadedly connected to a slider (4); An adjusting mechanism (5), wherein the adjusting mechanism (5) is arranged on the surface of the slider (4); The adjusting mechanism (5) comprises a working frame (51) fixedly connected to both sides of the slider (4); the top of the working frame (51) is fixedly connected to a second servo motor (52); the inner wall of the working frame (51) is rotatably connected to a harvesting knife (53); the top of the harvesting knife (53) is fixedly connected to the output shaft of the second servo motor (52); the bottom of the working frame (51) is fixedly connected to a right-angle blade (54); and the bottom of the working frame (51) is fixedly connected to a distance sensor (55).

2. The harvesting height adjustment device for a leek harvester according to claim 1, characterized in that: An electric push rod (56) is fixedly connected to one side of the mounting frame (1), a moving block (57) is fixedly connected to the telescopic end of the electric push rod (56), two moving holes (58) are opened on the top of the moving block (57), the surfaces of the two moving holes (58) are axially symmetrical, and a friction block (59) is slidably connected to the inner wall of the moving hole (58).

3. The harvesting height adjustment device for a leek harvester according to claim 1, characterized in that: The top and bottom of the slider (4) are both fixedly connected to a sealing bellows (510), the other end of the sealing bellows (510) is fixedly connected to the end of the mounting frame (1), and the surface of the screw rod (2) is located on the inner wall of the sealing bellows (510).

4. The harvesting height adjustment device for a leek harvester according to claim 1, characterized in that: An oil groove (511) is provided in the slider (4), and an oil inlet pipe (513) is provided on the top of the slider (4). The oil inlet pipe (513) is generally funnel-shaped at the top and tubular at the bottom. The tubular portion of the oil inlet pipe (513) passes through the slider (4) and is in communication with the oil groove (511).

5. The harvesting height adjustment device for a leek harvester according to claim 1, characterized in that: The bottom of the working frame (51) is fixedly connected to an anti-collision frame (514), the inner bottom wall of the anti-collision frame (514) is fixedly connected to a transparent cover (515), and the surface of the distance sensor (55) is located inside the anti-collision frame (514).

6. The harvesting height adjustment device for a leek harvester according to claim 2, characterized in that: A guide rod (517) is fixedly connected to the top of the mounting frame (1), and the inner wall of the friction block (59) is slidably connected to the surface of the guide rod (517).

7. The harvesting height adjustment device for a leek harvester according to claim 1, characterized in that: A sliding rod (516) is fixedly connected to the end of the mounting frame (1), and the inner wall of the sliding block (4) is slidably connected to the surface of the sliding rod (516).

8. The harvesting height adjustment device for a leek harvester according to claim 4, characterized in that: A sealing plug (512) is provided at the upper funnel opening of the oil inlet pipe (513).

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