A rapid wetland reed harvesting device for excavators

Abstract

The present invention relates to the technical field of agricultural machinery, and specifically relates to a rapid wetland reed harvesting device for an excavator, which includes a connecting frame arranged at the end of the excavator arm and a harvesting unit vertically movably arranged on the connecting frame; the harvesting unit includes a plurality of guiding frames arranged horizontally, and there are gaps for reeds to slide in between adjacent guiding frames. A rotating rod is rotatably arranged on the guiding frame, and an angle sensor for monitoring the inclination angle of the rotating rod is arranged at the end of the rotating rod where it rotates, and a maximum inclination angle is preset. When the rotating rod does not contact a stone, it is in a vertical state. When the rotating rod contacts a stone and rotates to the maximum inclination angle, the harvesting unit rises. The present invention not only avoids the problem of too high a height of the reed harvesting position caused by avoiding stones, but also ensures that the harvesting unit can avoid stones by itself when harvesting reeds, and avoids the impact between the harvesting unit and the stones.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, and particularly to a rapid wetland reed harvesting device for an excavator. Background Art

[0002] The existing reed harvesters cannot adjust the height of the conveying system for conveying reeds according to the actual height of the reeds. The height of the existing conveying system cannot be changed by itself. It is necessary to manually judge the height of the reeds and adjust the height of the conveying system. As a result, some reeds cannot smoothly fall on the conveying system, and the efficiency of adjusting the height of the conveying system manually is relatively low.

[0003] Chinese Patent Publication No. CN117441484A discloses a reed whole-stalk harvesting vertical clamping and longitudinal conveying system, including a vertical clamping and longitudinal conveying device, a clamping conveying chain height adjustment mechanism, and a control unit; the clamping conveying chain height adjustment mechanism includes a pre-cut detection unit, a position sensor, and a lifting device; the pre-cut detection unit is used to detect the reed height information in the pre-cut area and transmit it to the control unit; the position sensor is used to detect the current height of the vertical clamping and longitudinal conveying device and transmit it to the control unit; the lifting device is connected to the vertical clamping and longitudinal conveying device; the control unit is respectively connected to the pre-cut detection unit and the lifting device; the control unit calculates the average height of the reeds in the pre-cut area according to the reed height information in the pre-cut area detected by the pre-cut detection unit, calculates the center of gravity height of the reeds, and calculates the height difference between the center of gravity height of the reeds and the current height of the vertical clamping and longitudinal conveying device, and controls the lifting device to adjust the position of the vertical clamping and longitudinal conveying device corresponding to the center of gravity of the reeds in the pre-cut area according to the height difference.

[0004] The above solution realizes the effect of automatically adjusting the height of the conveying system according to the height of the reeds. However, the above solution needs to be based on a complete reed collection machine to operate normally, and the procurement cost is relatively high. It cannot be applied to all regions. Moreover, during the process of harvesting reeds, there are some relatively large stones in the wetland. The existing harvesting devices cannot predict the stones in front when harvesting reeds. If we want to avoid the impact between the harvesting device and the stones during the harvesting process, we need to raise the height of the harvesting device so that the harvesting device can avoid the stones. However, this will result in too much residue at the lower part of the reeds. And if we want to ensure that the reeds can be harvested as much as possible, we need to lower the height of the harvesting device. In this way, it will lead to the impact between the harvesting device and the stones, which will damage the harvesting device. Moreover, the traditional stone removal device is not applicable to reed harvesting because the stone removal device will also cause the reeds to lodge during the process of removing stones, which will prevent the harvesting unit from smoothly harvesting the reeds. Summary of the Invention

[0005] To solve the above problems, a rapid wetland reed harvesting device for an excavator is provided. By setting a rotating rod at the front end of a chain saw harvester and detecting the inclination angle of the rotating rod through an angle sensor, when there are stones in front of the harvesting unit during the movement of the harvesting unit, the rotating rod will contact the stones prior to the chain saw harvester. As the harvesting unit moves, the stones will push the bottom of the rotating rod, causing the rotating rod to rotate around its rotation point with the guide frame. At this time, the angle sensor set on one side of the rotating rod can monitor the inclination angle of the rotating rod. If the angle of the rotating rod reaches the maximum inclination angle, the harvesting unit will rise until the inclination angle of the rotating rod is less than the maximum inclination angle, and then the harvesting unit will stop rising. After maintaining the current height, it will descend and reset to the initial height. In this way, it not only avoids the problem of too high a height of the reed harvesting position caused by avoiding stones, but also ensures that the harvesting unit can avoid stones by itself when harvesting reeds, preventing the harvesting unit from colliding with the stones.

[0006] To solve the problems of the prior art, the present invention provides a rapid wetland reed harvesting device for an excavator, which includes a connecting frame arranged at the end of the excavator arm and a harvesting unit vertically movably arranged on the connecting frame; the harvesting unit includes a plurality of guide frames arranged horizontally, and there are gaps for reeds to slide in between adjacent guide frames. A rotating rod is rotatably arranged on the guide frame, and an angle sensor for monitoring the inclination angle of the rotating rod is arranged at the end of the rotating rod at the rotation point, and a maximum inclination angle is preset. When the rotating rod is not in contact with stones, it is in a vertical state. When the rotating rod contacts the stones and rotates to the maximum inclination angle, the harvesting unit rises.

[0007] Preferably, a first spring box is arranged on one side of the rotating rod. The first spring box and the angle sensor are respectively arranged on both sides of the rotating rod, and the first spring box is connected to the end of the rotating rod at the rotation point.

[0008] Preferably, a trigger sleeve is arranged at the end of the guide frame. A trigger rod is slidably arranged in the trigger sleeve, and one end of the trigger rod extends out from the end of the trigger sleeve away from the guide frame. A spring is arranged between the bottom of the trigger sleeve and the end of the trigger rod, and a pressure sensor for detecting the elastic force of the spring is arranged at the bottom of the trigger sleeve.

[0009] Preferably, the trigger sleeve is hinged to the guide frame, and the end of the trigger sleeve away from the guide frame is inclined downward.

[0010] Preferably, a second spring box is arranged at the hinge between the trigger sleeve and the guide frame.

[0011] Preferably, a lead screw is vertically rotatably arranged on the connecting frame, and a lifting block is fixedly arranged on the side of the harvesting unit. The lead screw vertically penetrates through the lifting block and is in threaded cooperation with the lifting block.

[0012] Preferably, an inflatable sleeve is provided at the lower part of the lifting block, and an air pump for inflating or deflating the inflatable sleeve is provided on one side of the inflatable sleeve.

[0013] Preferably, the harvesting unit includes a chain saw harvester arranged along the arrangement direction of the guide frame, and a plurality of knocking rods are uniformly and fixedly arranged on the chain saw of the chain saw harvester.

[0014] Preferably, a collection unit is provided on one side of the harvesting unit. The collection unit includes a collection box, and a rotating door is rotatably provided on the side of the collection box away from the harvesting unit. When the rotating door rotates and closes, the collection box and the rotating door form a collection cavity for collecting reeds.

[0015] Preferably, an entry slot for the reeds to enter is provided on the side of the collection box close to the harvesting unit, and a rotating frame is rotatably provided on one side of the entry slot. The rotation tangent direction of the rotating frame facing the entry slot side faces the collection box.

[0016] The beneficial effects of the present invention compared with the prior art are as follows:

[0017] 1. By providing a rotating rod at the front end of the chain saw harvester and detecting the inclination angle of the rotating rod through an angle sensor, when the harvesting unit moves, if there is a stone in front of the harvesting unit, the rotating rod will contact the stone before the chain saw harvester. As the harvesting unit moves, the stone pushes the bottom of the rotating rod, causing the rotating rod to rotate around its rotation point with the guide frame. At this time, the angle sensor provided on one side of the rotating rod can monitor the inclination angle of the rotating rod. If the angle of the rotating rod reaches the maximum inclination angle, the harvesting unit rises until the inclination angle of the rotating rod is less than the maximum inclination angle, and then the harvesting unit stops rising and then descends and resets to the initial height after maintaining the current height. In this way, it not only avoids the problem of too high a height of the reed harvesting position caused by avoiding stones, but also ensures that the harvesting unit can avoid stones by itself when harvesting reeds, and avoids the impact between the harvesting unit and the stones.

[0018] 2. By setting a trigger rod, a trigger sleeve and a spring, and arranging a pressure sensor inside the trigger sleeve, during the process of harvesting reeds, when encountering a stone whose height reaches the same height as the guide frame, the trigger rod first contacts the stone, and then the trigger rod slides into the trigger sleeve and presses the spring. At this time, the pressure sensor detects an increase in the pressure value. A rated pressure value is preset for the pressure sensor. When the pressure value monitored by the pressure sensor reaches the actual pressure value, the harvesting unit starts to rise. After the pressure value of the pressure sensor decreases, the harvesting unit still continues to rise. The height that the harvesting unit continues to rise is greater than the height of the chain saw harvester in the vertical direction, avoiding the chain saw harvester from colliding with the stone, preventing the guide frame from directly colliding with the stone, and also avoiding the stone from rolling over and toppling after directly hitting the guide frame, thereby preventing the situation where some reeds cannot be harvested smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional schematic diagram of a wetland reed rapid harvesting device for an excavator according to the present invention Figure 1 .

[0020] Figure 2 is a Figure 1 partial enlarged schematic diagram at position A of a wetland reed rapid harvesting device for an excavator according to the present invention.

[0021] Figure 3 is a Figure 1 partial enlarged schematic diagram at position B of a wetland reed rapid harvesting device for an excavator according to the present invention.

[0022] Figure 4 is a sectional three-dimensional schematic diagram of a wetland reed rapid harvesting device for an excavator according to the present invention Figure 1 .

[0023] Figure 5 is a Figure 4 partial enlarged schematic diagram at position C of a wetland reed rapid harvesting device for an excavator according to the present invention.

[0024] Figure 6 is a Figure 4 partial enlarged schematic diagram at position D of a wetland reed rapid harvesting device for an excavator according to the present invention.

[0025] Figure 7 is a Figure 4 partial enlarged schematic diagram at position E of a wetland reed rapid harvesting device for an excavator according to the present invention.

[0026] Figure 8 is a three-dimensional schematic diagram of a wetland reed rapid harvesting device for an excavator according to the present invention Figure 2 .

[0027] Figure 9 is a partial enlarged schematic view of the F position in a Figure 8 wetland reed rapid harvesting device for an excavator according to the present invention.

[0028] Figure 10 is a three-dimensional schematic view after the rotating door of a wetland reed rapid harvesting device for an excavator according to the present invention is opened.

[0029] Figure 11 is a sectional three-dimensional schematic Figure 2 .

[0030] Figure 12 is a Figure 11 partial enlarged schematic view of the G position in a wetland reed rapid harvesting device for an excavator according to the present invention.

[0031] The reference numerals in the figure are:

[0032] 1. Connecting frame; 11. Lead screw; 12. Lifting block; 13. First rotary driver; 14. Inflatable sleeve; 15. Air pump; 2. Harvesting unit; 21. Rotating rod; 211. First spring box; 22. Angle sensor; 23. Guide frame; 231. Trigger rod; 232. Trigger sleeve; 233. Spring; 234. Second spring box; 24. Chain saw harvester; 241. Knocking rod; 25. Belt conveyor; 3. Collection unit; 31. Collection frame; 32. Rotating door; 33. Second rotary driver; 34. Entrance slot; 35. Rotating frame. Detailed implementation manners

[0033] In order to further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the drawings and specific implementation manners.

[0034] Referring to Figure 1 , Figure 11 and Figure 12 : A wetland reed rapid harvesting device for an excavator includes a connecting frame 1 arranged at the end of the excavator arm and a harvesting unit 2 vertically movably arranged on the connecting frame 1; the harvesting unit 2 includes a plurality of guide frames 23 arranged horizontally, there is a gap for reeds to slide in between adjacent guide frames 23, a rotating rod 21 is rotatably arranged on the guide frame 23, an angle sensor 22 for monitoring the inclination angle of the rotating rod 21 is arranged at the end of the rotating rod 21 where it rotates, and a maximum inclination angle is preset. When the rotating rod 21 is not in contact with a stone, it is in a vertical state. When the rotating rod 21 contacts a stone and rotates to the maximum inclination angle, the harvesting unit 2 rises.

[0035] Existing reed harvesting devices are mainly divided into single - unit type and integral type. The single - unit type can be flexibly applied to different carriers, with relatively low usage costs and high flexibility. However, it cannot reasonably collect the harvested reeds. The integral reed harvesting device has a complete set of harvesting, conveying, and collecting systems, but has low usage flexibility, a relatively high procurement cost, and cannot be applied to all regions. Moreover, the integral reed harvesting device can adjust the height of the harvesting unit 2 according to the actual height of the reeds. However, both the integral and single - unit reed harvesting devices ignore the fact that there are some stones in the wetland, which may cause the harvesting unit 2 to collide with the stones during the harvesting process, thus easily damaging the harvesting unit 2 during harvesting. This problem is particularly obvious in the single - unit reed harvesting device. When in use, when the single - unit reed harvesting device is installed at the head of an excavator, the excavator drives the single - unit reed harvesting device to rotate and harvest. During this process, the height of the single - unit reed harvesting device does not change. The excavator driver can only realize hitting a stone after the single - unit reed harvesting device collides with the stone because the reeds before harvesting usually grow in patches and are relatively tall, making it impossible to observe the situation at the lower part of the wetland.

[0036] In order to avoid the reed harvesting device colliding with stones during the reed harvesting process, the structure of the existing single - unit reed harvesting device is redesigned so that the reed harvesting device in the present invention can automatically identify the stones in front of the moving path and automatically avoid them according to the height of the stones after being installed on the head of the excavator. The specific structure and working process of the reed harvesting device are as follows:

[0037] The harvesting unit 2 further includes a chain saw harvester 24. During use, the bucket of the excavator is disassembled, and the connecting frame 1 is installed at the end of the boom of the excavator. Subsequently, the installed reed harvesting device is driven by the excavator to move to the designated harvesting location. When harvesting, the excavator drives the reed harvesting device to rotate around the excavator through the boom. The harvesting area formed by the harvesting unit 2 is a fan-shaped structure. When the harvesting unit 2 is harvesting, the harvesting unit 2 rotates around the excavator driven by the boom of the excavator. The reeds slide into the gaps between adjacent guide frames 23 under the guidance of the guide frame 23. The rotating rod 21 and the chain saw harvester 24 are arranged in sequence from front to back along the advancing direction of the reeds sliding into the gaps on the guide frame 23. Since the rotating rod 21 is rotatably arranged in the guide frame 23, when the reeds pass through the guide frame 23, the reeds will not drive the rotating rod 21 to rotate. Only when there are stones in the advancing direction of the harvesting unit 2 and the height of the stones is relatively high, the rotating rod 21 will be pushed by the stones to rotate when passing through the stones. Since the rotating rod 21 is arranged at the front end of the chain saw harvester 24, when the harvesting unit 2 moves, when there are stones in front of the harvesting unit 2, the rotating rod 21 will contact the stones prior to the chain saw harvester 24. When the stones push the rotating rod 21 to rotate to the maximum inclination angle, at this time, the lower end of the rotating rod 21 contacts the stones, and the height of the lower end of the rotating rod 21 is the same as the height of the lower end surface of the chain saw harvester 24. Then, the harvesting unit 2 movably arranged vertically on the connecting frame 1 starts to rise. If the lower end of the rotating rod 21 has reached the highest position of the stones at this time, during the rising process of the harvesting unit 2, the rotating rod 21 gradually rotates towards the vertical state. At this time, the angle of the rotating rod 21 gradually becomes smaller, and the harvesting unit 2 stops rising after rising a rated distance. The rated distance for the harvesting unit 2 to rise needs to be set by the user according to the actual situation; conversely, if the rotating rod 21 rotates to the maximum inclination angle, but the lower end of the rotating rod 21 still has not moved to the highest position of the stones at this time, during the rising process of the harvesting unit 2, the inclination angle of the rotating rod 21 will always float around the maximum inclination angle. At this time, the harvesting unit 2 continues to rise until the inclination angle of the rotating rod 21 can stably be below the maximum inclination angle before stopping rising. At this time, the harvesting unit 2 stays at the current height for a period of time and then descends again. The length of time for the harvesting unit 2 to stay at the height can be set by the user according to the actual situation.

[0038] By arranging a rotating rod 21 at the front end of the chain saw harvester 24 and detecting the inclination angle of the rotating rod 21 through an angle sensor 22, when the harvesting unit 2 moves, if there are stones in front of the harvesting unit 2, the rotating rod 21 will contact the stones prior to the chain saw harvester 24. As the harvesting unit 2 moves, the stones will push the bottom of the rotating rod 21, causing the rotating rod 21 to rotate around its rotating point with the guide frame 23. At this time, the angle sensor 22 arranged on one side of the rotating rod 21 can monitor the inclination angle of the rotating rod 21. If the angle of the rotating rod 21 reaches the maximum inclination angle, the harvesting unit 2 will rise until the inclination angle of the rotating rod 21 is less than the maximum inclination angle, and then the harvesting unit 2 will stop rising and will descend and reset to the initial height after maintaining the current height. In this way, it not only avoids the problem of too high a height of the reed harvesting position caused by avoiding stones, but also ensures that the harvesting unit 2 can avoid stones by itself when harvesting reeds, preventing the harvesting unit 2 from colliding with the stones.

[0039] Refer to Figure 12 : A first spring box 211 is arranged on one side of the rotating rod 21. The first spring box 211 and the angle sensor 22 are respectively arranged on both sides of the rotating rod 21, and the first spring box 211 is connected to the end of the rotating rod 21 at the rotating point.

[0040] Since there are branches at the root parts of some reeds and the reeds at the root parts have a certain toughness, during the process of the harvesting unit 2 rotating with the boom of the excavator, the branched branches will also deflect the lower part of the rotating rod 21, causing the rotating rod 21 to rotate accidentally, and then causing the harvesting unit 2 to rise accidentally. To avoid the above situation and ensure that the harvesting unit 2 can cut reeds at a lower height when there are no stones, a first spring box 211 is arranged on one side of the rotating rod 21. The torsion of the spring in the first spring box 211 is used to limit the rotation of the rotating rod 21. In this way, if the rotating rod 21 is to rotate, sufficient thrust needs to be provided, otherwise the rotating rod 21 will not rotate, thus avoiding the accidental deflection of the rotating rod 21 by the branched branches of the reed roots.

[0041] Refer to Figure 5 : A trigger sleeve 232 is arranged at the end of the guide frame 23. A trigger rod 231 is slidably arranged in the trigger sleeve 232. One end of the trigger rod 231 extends out from the end of the trigger sleeve 232 away from the guide frame 23. A spring 233 is arranged between the bottom of the trigger sleeve 232 and the end of the trigger rod 231, and a pressure sensor for detecting the elastic force of the spring 233 is arranged at the bottom of the trigger sleeve 232.

[0042] Since the stones in the wetland cannot be visually inspected, the specific height of the stones in the wetland cannot be determined either. To ensure the cutting effect of the reeds, when using the harvesting unit 2 to cut the reeds, the closer the harvesting unit 2 is to the wetland ground, the better. However, this increases the probability of the harvesting unit 2 coming into contact with the stones. At the same time, due to the excessive height of some stones, during the movement of the harvesting unit 2, there will also be a situation where the stones directly contact the front end of the guide frame 23. As a result, the guide frame 23 directly collides with the stones, and the stones after the collision will be turned over. If the stones are large, they will not only damage the guide frame 23 but also crush the surrounding reeds, resulting in some reeds not being harvested normally. To avoid the above situation, a trigger sleeve 232, a trigger rod 231, and a spring 233 are provided at the front end of the guide frame 23, and a pressure sensor is provided at the bottom of the trigger sleeve 232. Thus, when the harvesting unit 2 is harvesting the reeds, when encountering a stone with a height reaching the same height as the guide frame 23, the trigger rod 231 first contacts the stone, and then the trigger rod 231 slides into the trigger sleeve 232 and presses the spring 233. At this time, the pressure sensor detects an increase in the pressure value. A rated pressure value is preset for the pressure sensor. When the pressure value monitored by the pressure sensor reaches the actual pressure value, the harvesting unit 2 starts to rise. After the pressure value of the pressure sensor decreases, the harvesting unit 2 still continues to rise. The height that the harvesting unit 2 continues to rise is greater than the height of the chain saw harvester 24 in the vertical direction. In this way, it can be avoided that the chain saw harvester 24 collides with the stones, so that the guide frame 23 does not directly collide with the stones, and it also avoids the situation where the stones roll over and fall after directly hitting the guide frame 23, thereby causing some reeds not to be harvested smoothly.

[0043] Refer to Figures 1 - 12 : The trigger sleeve 232 is hinged to the guide frame 23, and the end of the trigger sleeve 232 away from the guide frame 23 is inclined downward.

[0044] When the excavator drives the harvesting unit 2 to rotate, if the moving speed of the harvesting unit 2 is too fast, the trigger rod 231 will be quickly pressed into the trigger sleeve 232 when it contacts the stone, resulting in the spring 233 being quickly compressed, which easily causes damage to the spring 233. Thus, the trigger sleeve 232 is inclined and hinged to the guide frame 23. When the trigger rod 231 contacts the stone, as the harvesting unit 2 moves, while the trigger rod 231 slides into the trigger sleeve 232, the trigger sleeve 232 can also rotate on the guide frame 23, avoiding the spring 233 being quickly squeezed.

[0045] Refer to Figure 6 : A second spring box 234 is provided at the hinge joint of the trigger sleeve 232 and the guide frame 23.

[0046] By setting the second coil spring box 234, the trigger sleeve 232 can be reset to its initial state in a timely manner after rotation.

[0047] Refer to Figure 10 : A lead screw 11 is vertically rotatably arranged on the connecting frame 1, and a lifting block 12 is fixedly arranged on the side of the harvesting unit 2. The lead screw 11 vertically penetrates through the lifting block 12 and is in threaded cooperation with the lifting block 12.

[0048] A first rotary driver 13 for driving the lead screw 11 to rotate is arranged on the connecting frame 1. The first rotary driver 13 is preferably a servo motor. The first rotary driver 13 drives the lifting block 12 to lift through the lead screw 11.

[0049] Refer to Figure 11 : An inflatable sleeve 14 is arranged at the lower part of the lifting block 12, and an air pump 15 for inflating or deflating the inflatable sleeve 14 is arranged on one side of the inflatable sleeve 14.

[0050] When the lead screw 11 drives the lifting block 12 to rise, the inflatable sleeve 14 is communicated with the outside through the air pump 15. When the lifting block 12 moves to a specified position, the air pump 15 fills the inflatable sleeve 14 with gas, reducing the pressure of the lifting block 12 on the lower thread of the lead screw 11 and extending the service life of the lead screw 11.

[0051] Refer to Figure 9 : The harvesting unit 2 includes a chain saw harvester 24 arranged along the arrangement direction of the guide frame 23. A plurality of knocking rods 241 are uniformly and fixedly arranged on the chain saw of the chain saw harvester 24.

[0052] The knocking rod 241 can break the stones that enter the gap and are not detected by the rotating rod 21.

[0053] Refer to Figure 3 、 Figure 7 、 Figure 8 、 Figure 10 and Figure 11 : A collection unit 3 is arranged on one side of the harvesting unit 2. The collection unit 3 includes a collection frame 31. A rotating door 32 is rotatably arranged on the side of the collection frame 31 away from the harvesting unit 2. When the rotating door 32 rotates and closes, the collection frame 31 and the rotating door 32 form a collection cavity for collecting reeds.

[0054] A belt conveyor 25 for pushing the reeds entering the gap towards the collection unit 3 is provided on the guide frame 23. A second rotary driver 33 for driving the rotation of the rotating door 32 is provided on the collection frame 31. The second rotary driver 33 is preferably a servo motor. The excavator drives the harvesting unit 2 to harvest the reeds in a fan shape. When the harvesting unit 2 is in the harvesting state, the rotating door 32 closes on the collection frame 31, and at this time, a collection cavity is formed to collect the reeds. After the excavator drives the harvesting unit 2 to rotate one circle, the rotating door 32 opens, and the reeds in the collection frame 31 are discharged. When the harvesting unit 2 moves up and down, the collection unit 3 moves up and down synchronously with the harvesting unit 2.

[0055] Refer to Figure 2 : An inlet groove 34 for the reeds to enter is formed on one side of the collection frame 31 close to the harvesting unit 2. A rotating frame 35 is rotatably arranged on one side of the inlet groove 34, and the rotation tangent direction of the rotating frame 35 towards the inlet groove 34 faces the collection frame 31.

[0056] By the rotation of the rotating frame 35, the rotating frame 35 can not only push the reeds into the collection frame 31, but also prevent the reeds in the collection frame 31 from falling out through the inlet groove 34.

[0057] Working principle: When the harvesting unit 2 is harvesting, the harvesting unit 2 rotates around the excavator driven by the excavator boom. The reeds slide into the gaps between adjacent guide frames 23 under the guidance of the guide frame 23. The rotating rod 21 and the chain saw harvester 24 are arranged in sequence from front to back along the advancing direction of the reeds sliding into the gaps on the guide frame 23. Since the rotating rod 21 is rotatably arranged in the guide frame 23, when the reeds pass through the guide frame 23, the reeds will not drive the rotating rod 21 to rotate. Only when there are stones in the advancing direction of the harvesting unit 2 and the height of the stones is relatively high, the rotating rod 21 will be pushed by the stones to rotate when passing through the stones. Since the rotating rod 21 is arranged at the front end of the chain saw harvester 24, when the harvesting unit 2 moves, when there are stones in front of the harvesting unit 2, the rotating rod 21 will contact the stones prior to the chain saw harvester 24. When the stones push the rotating rod 21 to rotate to the maximum inclination angle, at this time, the lower end of the rotating rod 21 contacts the stones, and the height of the lower end of the rotating rod 21 is the same as the height of the lower end surface of the chain saw harvester 24. Then, the harvesting unit 2 movably arranged on the connecting frame 1 in the vertical direction starts to rise. If the lower end of the rotating rod 21 has reached the highest position of the stones at this time, during the rising process of the harvesting unit 2, the rotating rod 21 gradually rotates towards the vertical state. At this time, the angle of the rotating rod 21 gradually becomes smaller, and the harvesting unit 2 stops rising after rising a rated distance. The rated distance for the harvesting unit 2 to rise needs to be set by the user according to the actual situation; on the contrary, if the rotating rod 21 rotates to the maximum inclination angle, and at this time the lower end of the rotating rod 21 still has not moved to the highest position of the stones, during the rising process of the harvesting unit 2, the inclination angle of the rotating rod 21 will always fluctuate around the maximum inclination angle. At this time, the harvesting unit 2 continues to rise until the inclination angle of the rotating rod 21 can stably be below the maximum inclination angle and then stops rising. At this time, the harvesting unit 2 stays at the current height for a period of time and then descends again. The length of time for the harvesting unit 2 to stay at the height can be set by the user according to the actual situation.

[0058] The above embodiments only represent one or several implementation manners of the present invention. The description is relatively specific and detailed, but it cannot be understood as a limitation to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A wetland reed rapid harvesting device for an excavator, comprising a connecting frame (1) arranged at an end of an excavator arm and a harvesting unit (2) arranged vertically on the connecting frame (1); It is characterized in that The harvesting unit (2) comprises a plurality of guide frames (23) arranged in a horizontal direction, and there is a gap between adjacent guide frames (23) for reeds to slide into. A rotating rod (21) is rotatably arranged on the guide frame (23), and an angle sensor (22) for monitoring the tilt angle of the rotating rod (21) is arranged at the end of the rotating rod (21) at the rotating position, and a maximum tilt angle is preset. When the rotating rod (21) is not in contact with a stone, it is in a vertical state. When the rotating rod (21) is in contact with a stone and rotates to the maximum tilt angle, the harvesting unit (2) rises. A first coil spring box (211) is arranged on one side of the rotating rod (21), the first coil spring box (211) and the angle sensor (22) are arranged on both sides of the rotating rod (21), respectively, and the first coil spring box (211) is connected to the end of the rotating rod (21) at the rotating position; A trigger sleeve (232) is provided at the end of the guide frame (23), a trigger rod (231) is slidably provided in the trigger sleeve (232), one end of the trigger rod (231) extends from an end of the trigger sleeve (232) away from the guide frame (23), a spring (233) is provided between the bottom of the trigger sleeve (232) and the end of the trigger rod (231), and a pressure sensor for detecting the elastic force of the spring (233) is provided at the bottom of the trigger sleeve (232); The harvesting unit (2) comprises a chain saw harvester (24) arranged along the arrangement direction of the guide frame (23), and a plurality of knocking rods (241) are evenly fixedly arranged on the chain saw of the chain saw harvester (24); A collecting unit (3) is arranged on one side of the harvesting unit (2), the collecting unit (3) comprising a collecting frame (31), a rotating door (32) being rotatably arranged on a side of the collecting frame (31) away from the harvesting unit (2), and when the rotating door (32) is rotated and closed, the collecting frame (31) and the rotating door (32) form a collecting chamber for collecting reeds; An entry slot (34) for reeds to enter is provided on one side of the collecting frame (31) close to the harvesting unit (2), and a rotating frame (35) is rotatably provided on one side of the entry slot (34), with the rotation tangent direction of the rotating frame (35) toward the side of the entry slot (34) facing the collecting frame (31).

2. A wetland reed rapid harvesting device for an excavator according to claim 1, characterized in that: The trigger sleeve (232) is hinged on the guide frame (23), and the end of the trigger sleeve (232) away from the guide frame (23) is tilted downward.

3. A wetland reed rapid harvesting device for an excavator according to claim 2, characterized in that: A second coil spring box (234) is provided at the hinged position between the trigger sleeve (232) and the guide frame (23).

4. The wetland reed rapid harvesting device for an excavator according to claim 1, characterized in that: A screw rod (11) is vertically rotatably arranged on the connecting frame (1), and a lifting block (12) is fixedly arranged on the side of the harvesting unit (2). The screw rod (11) vertically penetrates the lifting block (12) and is threadably engaged with the lifting block (12).

5. The wetland reed rapid harvesting device for an excavator according to claim 4, characterized in that: An inflatable sleeve (14) is arranged at the lower part of the lifting block (12), and an air pump (15) for inflating or deflating the inflatable sleeve (14) is arranged on one side of the inflatable sleeve (14).

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