Obstacle avoidance type soil loosening and weeding mechanism and weeding device for orchard

Abstract

The utility model discloses an obstacle-avoiding type soil-loosening weeding mechanism and a weeding device for orchard, the obstacle-avoiding type soil-loosening weeding mechanism comprises a mounting rack, a vertical shaft, a weeding coulter, a driving piece and a sensing piece, the mounting rack is arranged along the front-back direction, the vertical shaft is vertically arranged at the rear lower part of the mounting rack, and the weeding coulter is arranged on the vertical shaft. The upper end of the vertical shaft is rotationally connected with the mounting frame, the driving part is mounted on the mounting frame and in transmission connection with the vertical shaft, the weeding coulter is mounted at the lower end of the vertical shaft, and the sensing part is arranged on the mounting frame or the vertical shaft and used for sensing whether the weeding coulter approaches an obstacle or not. The driving part is used for driving the weeding coulter to swing backwards to be stored so as to avoid obstacles or swing forwards to be reset, the structure is simple, automatic obstacle avoidance can be achieved, and meanwhile the working efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural machinery, and particularly relates to an obstacle-avoiding soil loosening and weeding mechanism and a weeding device for orchards. Background Art

[0002] At present, weeding in orchards is mostly done by manual weeding or by using small special loosening weeders, but they all have a defect of low operating efficiency. When weeding between plant rows, large tractor-driven loosening weeders cannot avoid plants, so the operation is difficult and it is necessary to prevent damage to the lower end of the plant trunk, so the operating efficiency is not high. Although document number CN116636520A "A kind of orchard under-tree avoidance weeding and rooting machine" discloses a weeding and rooting equipment with avoidance function, its weeding part is installed in a damping manner, so when passing through the plants, although it will avoid the plants, it will still cause damage to the outer skin of the lower end of the plants. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a soil loosening and weeding mechanism with a simple structure, which can avoid obstacles when it touches obstacles during the forward movement and can reset itself after passing the obstacles.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is as follows: an obstacle-avoiding soil loosening and weeding mechanism, comprising a mounting frame, a vertical shaft, a weeding coulter, a driving member and a sensing member, the mounting frame being arranged along the front-to-back direction, the vertical shaft being vertically arranged at the rear and lower part of the mounting frame, and the upper end of the vertical shaft being rotatably connected to the mounting frame, the driving member being mounted on the mounting frame and transmission-connected to the vertical shaft, the weeding coulter being mounted at the lower end of the vertical shaft, the sensing member being arranged on the mounting frame or on the vertical shaft, and being used to sense whether the weeding coulter is approaching an obstacle, and the driving member being used to drive the weeding coulter to swing backward to be stored to avoid obstacles or to swing forward to be reset.

[0005] The beneficial effect of the above technical solution is that when the obstacle-avoiding soil loosening and weeding mechanism is operating normally, its weeding plow cuts into the shallow underground soil to turn the soil, and at the same time cuts off the roots of weeds, thereby achieving soil loosening and weeding. When the sensing element touches or approaches an obstacle (such as a tree plant), the driving element linked to the sensing element will drive the vertical shaft to drive the weeding plow to swing backward to avoid the obstacle. When the sensing element senses that the obstacle in front has disappeared, the driving element drives the vertical shaft to drive the weeding plow to swing forward to reset to continue the normal soil loosening and weeding operation.

[0006] The weeding plow described in the above technical solution is in the shape of a strip plate, and the weeding plow is arranged along the left and right direction, and one end of the weeding plow is connected to the lower end of the vertical shaft, and the blade of the weeding plow faces forward. The weeding plow is driven by the driving member to rotate backward to be distributed along the front and rear direction for storage, or rotate forward to be distributed along the left and right direction for reset.

[0007] The beneficial effect of the above technical solution is that: its structure is simple, so that the weeding plow can weed a certain width between plant rows when in operation, and can avoid obstacles well when it swings backward.

[0008] The driving member described in the above technical solution is a hydraulic driving member.

[0009] The beneficial effects of the above technical solution are: it has a simple structure and a large torque during operation.

[0010] The above technical solution also includes a reversing valve, the driving member is connected to the hydraulic station through the reversing valve, the reversing valve and the sensing member are both installed on the vertical shaft, the sensing member has a sensing part and a triggering part, and the triggering part of the sensing member is close to or in contact with the valve core of the reversing valve, the sensing part of the sensing member is located in the front upper part of the weeding plow, when the sensing part of the sensing member is against the obstacle, the triggering part of the sensing member squeezes the valve core so that the driving member drives the vertical shaft to drive the weeding plow and the sensing member to rotate to avoid, when the sensing part of the sensing member is separated from the obstacle, the valve core rebounds to release the squeezing, and the driving member drives the vertical shaft to drive the weeding plow and the sensing member to rotate to reset.

[0011] The beneficial effect of the above technical solution is that the sensing element and the reversing valve can be mechanically linked. When the sensing part of the sensing element contacts an obstacle, it will rotate back so that the triggering part of the sensing element squeezes the valve core. At this time, the reversing valve will switch the operating oil circuit of the driving element so that its driving vertical shaft drives the weeding plow to rotate backward to avoid the obstacle.

[0012] The sensing member in the above technical solution includes a rotating ring, a sensing rod and an extrusion head. The rotating ring is rotatably mounted on the vertical shaft and is located between the weeding plow and the mounting frame. The sensing rod is arranged at the upper front side of the blade side of the weeding plow, and one end of the sensing rod is connected to the rotating ring. The extrusion head is connected to the rotating ring and is close to the valve core. When the sensing rod touches an obstacle, it deflects backward and drives the extrusion head to squeeze the valve core, so that the driving member drives the vertical shaft to drive the sensing member and the weeding plow to swing backward to avoid the obstacle.

[0013] The beneficial effect of the above technical solution is that when the vertical shaft rotates under the drive of the driving member, it can keep rotating in the same direction as the rotating shaft. At this time, after the sensing rod contacts the obstacle, the sensing rod will slightly rotate under the action of the obstacle so that the extrusion head squeezes the valve core, so that the driving member will drive the vertical shaft to rotate, and the reversing valve will release the limit on the backward rotation of the sensing rod after the vertical shaft rotates. Therefore, at this time, the sensing rod will rotate backward like a weeding plow under the squeezing of the obstacle to avoid the obstacle. After the obstacle-avoiding soil loosening and weeding mechanism passes the obstacle, the valve core will squeeze the sensing rod forward and swing to reset under the action of its own rebound force. At the same time, the reversing valve switches the oil circuit of the driving member to its driving vertical shaft to drive the weeding plow to swing to reset to continue loosening and weeding.

[0014] The vertical axis described in the above technical scheme also includes a mounting plate, an upper axis rod, a lower axis rod and a connecting plate, the upper axis rod and the lower axis rod are both vertically arranged, the mounting plate is horizontally mounted on the lower end of the upper axis rod, and the connecting plate is horizontally mounted on the upper end of the lower axis rod, a plurality of first connecting holes are arranged on the mounting plate, and a plurality of second connecting holes are arranged on the connecting plate, the mounting plate and the connecting plate fit each other and the upper axis rod and the lower axis rod are coaxially distributed, a plurality of the first connecting holes and a plurality of the second connecting holes correspond to each other and are aligned with each other, and a connecting piece is respectively inserted to connect the mounting plate and the connecting plate, and the upper end of the upper axis rod constitutes the upper end of the vertical axis, and the lower end of the lower axis rod constitutes the lower end of the vertical axis.

[0015] The beneficial effect of the above technical solution is that its structure is simple, so the lower shaft rod and the weeding coulter can be replaced as needed, and at this time the mounting plate can be used as the mounting site of the reversing valve.

[0016] The driving member in the above technical solution is a telescopic cylinder, one end of which is movably connected to the edge of the mounting plate, and the other end of which is movably connected to the front lower end of the mounting frame. The driving member extends or contracts to drive the mounting plate to drive the vertical axis to swing.

[0017] The beneficial effects of the above technical solution are: its structure is simple and the driving torque is large.

[0018] The above technical solution also includes an engagement seat, through which the weeding coulter is mounted on the lower end of the vertical shaft, and the engagement seat is used to adjust the angle of the weeding coulter relative to the mounting frame.

[0019] The beneficial effect of the above technical solution is that the angle of the weeding coulter relative to the mounting frame can be flexibly adjusted according to needs, and the connection between the weeding coulter and the vertical shaft is not easy to loosen.

[0020] The engaging seat in the above technical scheme includes an upper engaging block, a lower engaging block and a tightening bolt, wherein the upper engaging block and the lower engaging block are both cylindrical and vertically arranged, the lower end of the lower engaging block is integrally formed with one end of the weeding plow, the upper end of the upper engaging block is coaxially distributed with the lower end of the vertical shaft and integrally formed, the lower end of the upper engaging block and the upper end of the lower engaging block are both concavely provided with engaging grooves at uniform intervals along the annular direction, the middle part of the lower end of the upper engaging block is coaxially concave with a thread groove upward, and the middle part of the lower engaging block is coaxially provided with an eyelet that passes through up and down, the eyelet in the middle part of the lower engaging block is aligned with the thread groove in the middle part of the upper engaging block and the tightening bolt is inserted to be threadedly connected with the thread groove, and the tightening bolt is tightened to press the upper engaging block and the lower engaging block to the engaging grooves thereon to engage with each other.

[0021] The beneficial effect of the above technical solution is that: its structure is simple, so that after the upper engaging block and the lower engaging block are connected by tightening the bolts, it is not easy for the two to rotate relative to each other.

[0022] The second purpose of the utility model is to provide a weeding device for an orchard which can weed the weeds on both sides of the rows of orchard plants and can avoid obstacles by itself when encountering plants.

[0023] In order to achieve the above-mentioned purpose, the technical solution of the utility model is as follows: a weeding device for an orchard, comprising a frame and two obstacle-avoiding soil loosening and weeding mechanisms as described above, the frame being horizontally arranged in the left and right directions, and the two obstacle-avoiding soil loosening and weeding mechanisms being symmetrically arranged at both ends of the frame, and the two mounting frames being connected to the frame or integrally formed therewith.

[0024] The beneficial effect of the above technical solution is that the orchard weeding device can loosen the soil and weed two adjacent plant rows in the orchard at the same time, and can avoid the plants on its own to avoid damaging the plant root system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a vertical view of the obstacle avoidance type soil loosening and weeding mechanism described in Example 1 of the utility model;

[0026] Figure 2 It is a top view of the obstacle avoidance type soil loosening and weeding mechanism in operation state described in Example 1 of the utility model;

[0027] Figure 3 It is a top view of the obstacle avoidance type soil loosening and weeding mechanism in the storage state as described in Example 1 of the utility model;

[0028] Figure 4 This is a vertical view of the obstacle avoidance type soil loosening and weeding mechanism described in Example 1 of the utility model with the mounting frame partially removed;

[0029] Figure 5It is a top view of the obstacle avoidance type soil loosening and weeding mechanism in the embodiment 1 of the utility model in the storage state when the mounting frame is partially removed;

[0030] Figure 6 It is a top view of the obstacle avoidance type soil loosening and weeding mechanism in Example 1 of the utility model in the operating state when the mounting frame is partially removed;

[0031] Figure 7 This is a schematic diagram of the structure of the vertical shaft described in Example 1 of the utility model;

[0032] Figure 8 This is a structural schematic diagram of the upper limit portion of the mounting plate described in Example 1 of the utility model;

[0033] Fig. 9 This is a schematic diagram of the connection between the weeding coulter and the lower shaft rod in Example 1 of the utility model;

[0034] Fig.10 It is a cross-sectional view of the kneading seat described in Example 1 of the utility model;

[0035] Fig.11 This is a top view of the orchard weeding device described in Example 2 of the utility model.

[0036] In the figure: 1 obstacle avoidance type soil loosening and weeding mechanism; 11 mounting frame; 12 vertical axis; 121 mounting plate; 1211 first connecting hole; 1212 limiting part; 122 upper shaft rod; 123 lower shaft rod; 124 connecting plate; 1241 second connecting hole; 125 connecting member; 13 weeding plow; 14 driving member; 15 sensing member; 151 rotating ring; 152 sensing rod; 1521 connecting rod; 153 extrusion head; 1531 extrusion rod; 1532 roller; 16 engaging seat; 161 upper engaging block; 1611 threaded groove; 162 lower engaging block; 1621 eyelet; 163 tightening bolt; 17 reversing valve; 171 valve core; 2 frame; 3 obstacle. DETAILED DESCRIPTION

[0037] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. According to the following description and claims, the advantages and features of the present invention will be more clearly described. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0038] Example 1

[0039] like Figure 1-Figure 3As shown, this embodiment provides an obstacle avoidance type soil loosening and weeding mechanism, including a mounting frame 11, a vertical shaft 12, a weeding plow 13, a driving member 14 and a sensing member 15, wherein the mounting frame 11 is arranged along the front-to-back direction, the vertical shaft 12 is vertically arranged at the rear and lower part of the mounting frame 11, and the upper end of the vertical shaft 12 is rotatably connected to the mounting frame 11, the driving member 14 is mounted on the mounting frame 11 and is transmission-connected to the vertical shaft 12, the weeding plow 13 is mounted at the lower end of the vertical shaft 12, and the sensing member 15 is arranged on the mounting frame 11 or on the vertical shaft 12, and is used to sense whether the weeding plow 13 is approaching. Obstacles, the driving member 14 is used to drive the weeding plow 13 to swing backward to be stored to avoid obstacles or swing forward to reset. When the obstacle-avoiding soil loosening and weeding mechanism is in normal operation, its weeding plow cuts into the shallow underground soil to turn the soil, and at the same time cuts off the roots of weeds, thereby loosening the soil and weeding. When the sensing member touches or approaches an obstacle (such as a tree plant), the driving member linked to the sensing member will drive the vertical shaft to drive the weeding plow to swing backward to avoid the obstacle. When the sensing member senses that the obstacle in front has disappeared, the driving member drives the vertical shaft to drive the weeding plow to swing forward to reset to continue the normal soil loosening and weeding operations.

[0040] The weeding plow 13 in the above technical solution is in the shape of a strip plate, and the weeding plow 13 is arranged along the left-right direction, and one end thereof is connected to the lower end of the vertical shaft 12, and the blade of the weeding plow 13 faces forward. The weeding plow 13 is driven by the driving member 14 to rotate backward to be distributed along the front-to-back direction for storage, or rotate forward to be distributed along the left-to-right direction for reset. Its structure is simple, so that the weeding plow 13 can weed a certain width between the rows of plants when it is running, and can avoid obstacles well when it swings backward.

[0041] The driving member 14 in the above technical solution is a hydraulic driving member (with a large torque during operation), and further includes a reversing valve 17. The driving member 14 is connected to the hydraulic station through the reversing valve 17. The reversing valve and the sensing member are both installed on the vertical shaft. The sensing member 15 has a sensing part and a triggering part, and the triggering part of the sensing member 15 is close to or in contact with the valve core 171 of the reversing valve 17. The sensing part of the sensing member 15 is located above and in front of the weeding coulter 13. When the sensing part of the sensing member 15 hits the obstacle, the triggering part of the sensing member 15 squeezes the valve core 171 to make the driving member 1 The vertical shaft 12 is driven to drive the weeding coulter 13 and the sensing element 15 to rotate to avoid the obstacle. When the sensing part of the sensing element 15 is separated from the obstacle, the valve core 171 rebounds to release the squeezing, and the driving element 14 drives the vertical shaft 12 to drive the weeding coulter 13 and the sensing element 15 to rotate to reset. In this way, the sensing element and the reversing valve can realize mechanical linkage. When the sensing part of the sensing element contacts the obstacle, it will rotate back so that the triggering part of the sensing element squeezes the valve core 171. At this time, the reversing valve will switch the running oil circuit of the driving element so that it drives the vertical shaft to drive the weeding coulter to rotate backward to avoid the obstacle.

[0042] in Figure 2 and Figure 3 The dotted arrows in the figure all indicate the forward direction of the obstacle avoidance type soil loosening and weeding mechanism during operation.

[0043] like Figure 4-Figure 6As shown, the sensing member 15 in the above technical solution includes a rotating ring 151, a sensing rod 152 and an extrusion head 153. The rotating ring 151 is rotatably mounted on the vertical shaft 12 and is located between the weeding coulter 13 and the mounting frame. The sensing rod 152 is arranged at the upper front side of the blade side of the weeding coulter 13, and one end thereof is connected to the rotating ring 151. The extrusion head 153 is connected to the rotating ring 151 and is close to the valve core 171. When the sensing rod 152 touches an obstacle, it deflects backward and drives the extrusion head 153 to squeeze the valve core 171, so that the driving member 14 drives the vertical shaft 12 to drive the sensing member and the weeding coulter 13 to swing backward to avoid obstacles; in this way, When the vertical shaft rotates under the drive of the driving member, it can keep rotating in the same direction as the rotating shaft. At this time, after the sensing rod contacts the obstacle, the sensing rod will slightly rotate under the action of the obstacle so that the extrusion head squeezes the valve core 171, so that the driving member will drive the vertical shaft to rotate, and the reversing valve will release the limit of the sensing rod rotating backward after the vertical shaft rotates. Therefore, at this time, the sensing rod will rotate backward like a weeding coulter to avoid the obstacle under the pressure of the obstacle. After the obstacle-avoiding soil loosening and weeding mechanism passes the obstacle, the valve core 171 will squeeze the sensing rod forward and swing to reset under the action of its own rebound force. At the same time, the reversing valve switches the oil circuit of the driving member to its driving vertical shaft to drive the weeding coulter to swing to reset to continue loosening and weeding. In this embodiment, the end of the sensing rod away from the vertical shaft is bent backward in an arc shape, so that there is a certain buffer space when the sensing rod is separated from the obstacle, avoiding the instantaneous separation of the sensing rod and the obstacle, which causes the weeding coulter to reset too sensitively and scratch the root system of the plant.

[0044] The valve core of the reversing valve is similar to a push-type switch, which switches the oil circuit when squeezed by external force, and resets (the valve core itself has resilience and resets under the action of the resilience) to switch the oil circuit back to the original state after the external force is removed.

[0045] like Figure 7As shown, the vertical shaft 12 in the above technical solution also includes a mounting plate 121, an upper shaft rod 122, a lower shaft rod 123 and a connecting plate 124, the upper shaft rod 122 and the lower shaft rod 123 are both vertically arranged, the mounting plate 121 is horizontally installed at the lower end of the upper shaft rod 122, the connecting plate 124 is horizontally installed at the upper end of the lower shaft rod 123, the mounting plate 121 is provided with a plurality of penetrating first connecting holes 1211, the connecting plate 124 is provided with a plurality of penetrating second connecting holes 1241, the mounting plate 121 and the connecting plate 124 are fitted to each other and the upper shaft rod 122 and the lower shaft rod 123 are coaxially distributed, the plurality of first connecting holes 1211 and the plurality of second connecting holes 1241 correspond to each other and are aligned with each other, and a connecting piece 125 is respectively inserted to connect the mounting plate 121 and the connecting plate 124. The mounting plate 121 and the connecting plate 124 are butt-jointed, and the upper end of the upper shaft rod 122 constitutes the upper end of the vertical shaft 12, and the lower end of the lower shaft rod 123 constitutes the lower end of the vertical shaft 12. The structure is simple, so the lower shaft rod and the weeding coulter can be replaced as needed, and at this time the mounting plate can be used as the installation site of the reversing valve, wherein the butt-jointing method of the mounting plate and the connecting plate is similar to the butt-jointing of two flange rings (in this embodiment, the connecting parts include bolts and nuts, that is, the mounting plate and the connecting plate are bolted together by bolts and nuts, and the bolting method belongs to the prior art and is not described here). Preferably, the reversing valve can be fixedly mounted on the upper end of the mounting plate, and the reversing valve is connected to the driving member and the hydraulic station respectively through a hose, and the size of the mounting plate is larger than the size of the connecting plate and more size is reserved for the installation of the reversing valve.

[0046] Specifically, Figure 8As shown, the rotation angle of the sensing member on the vertical axis can be limited to a smaller range, and its rotation angle only needs to be limited to when the sensing rod abuts against the obstacle, it will swing backward until the extrusion head just squeezes the valve core and the reversing valve switches the oil circuit, wherein, when the sensing rod does not abut against the obstacle, the extrusion head and the valve core can maintain a contact state (only contact, but no extrusion of the valve core), and the reversing valve needs to be installed on the mounting plate so that its valve core faces and is close to the extrusion head. Specifically, the edge of the mounting plate protrudes outside the connecting plate, and the rotating ring is located on the upper shaft rod, and the sensing rod is located below the mounting plate, and the corresponding end of the sensing rod is connected to the edge of the rotating ring through a vertically arranged connecting rod, and the two ends of the connecting rod are respectively Connected with the rotating ring and the sensing rod, the mounting plate is provided with a limiting portion 1212 (the limiting portion 1212 can be a notch or an arc-shaped waisted circular hole) for the connecting rod to pass through, and the connecting rod limits the rotation angle of the rotating ring relative to the vertical axis, wherein the limiting portion can not only limit the backward swing angle of the sensing rod relative to the vertical axis, but also limit the forward swing angle of the sensing rod relative to the vertical axis. Specifically, when the sensing rod is swung forward to the extreme position (that is, the connecting rod abuts against the front side of the limiting portion), the sensing rod is just located at the front and upper side of the weeding coulter blade side, and when the sensing rod is swung backward to the extreme position (that is, the connecting rod abuts against the rear side of the limiting portion), the extrusion head just squeezes the valve core to the reversing valve to switch the oil circuit.

[0047] The extrusion head 153 includes an extrusion rod 1531 protruding along the radial direction of the rotating ring 151 and the upper end of the outer wall of the rotating ring 151. The end of the extrusion rod 1531 away from the rotating ring 151 is coaxially rotatably provided with a roller 1532. The outer peripheral edge of the roller 1532 is close to the valve core 171. By setting the roller 1532, the contact between the extrusion head 153 and the valve core 171 is rolling friction, which can reduce the friction between the two. In this embodiment, the sensing rod 152 constitutes the sensing part of the sensing member 15, and the extrusion head 153 constitutes the triggering part of the sensing member 15.

[0048] like Figure 4 As shown, the connecting rod in this embodiment can be bent and connected to the rotating ring radially, the end of the extrusion rod away from the rotating ring in this embodiment can be bent vertically upward or downward, and the roller is installed at the end of the extrusion rod away from the rotating ring.

[0049] In the above technical solution, the driving member 14 is a telescopic oil cylinder, one end of the driving member 14 is movably connected to the edge of the mounting plate 121 (can be a swing connection), and the other end of the driving member 14 is movably connected to the front lower end of the mounting frame 11 (can be a swing connection). The driving member 14 extends or contracts to drive the mounting plate 121 to drive the vertical shaft 12 to swing. It has a simple structure and a large driving torque. The swing connection between the two ends of the driving member and the mounting plate and the mounting frame belongs to the prior art and will not be described here. Of course, the driving member can also be a rotary oil cylinder (a rotary oil cylinder with a rotation angle of 90°), in which case it can be directly installed on the mounting frame.

[0050] like Figure 1 , Figure 4 , Fig. 9 and Fig.10 As shown, the above technical solution also includes an engagement seat 16, and the weeding coulter 13 is installed on the lower end of the vertical shaft 12 through the engagement seat 16. The engagement seat 16 is used to adjust the angle of the weeding coulter 13 relative to the mounting frame 11, so that the angle of the weeding coulter relative to the mounting frame can be flexibly adjusted according to needs, and the connection between the weeding coulter and the vertical shaft is not easy to loosen. The engagement seat 16 includes an upper engagement block 161, a lower engagement block 162 and a tightening bolt 163. The upper engagement block 161 and the lower engagement block 162 are both cylindrical and vertically arranged. The lower end of the lower engagement block 162 is integrally formed with one end of the weeding coulter 13, and the upper end of the upper engagement block 161 is coaxially distributed and integrally formed with the lower end of the vertical shaft 12. The lower end of the upper engaging block 161 and the upper end of the lower engaging block 162 are both provided with engaging grooves at uniform intervals along the circumferential direction. A threaded groove 1611 is coaxially upwardly recessed in the middle of the lower end of the upper engaging block 161, and a hole 1621 penetrating upward and downward is coaxially provided in the middle of the lower engaging block 162. The hole 1621 in the middle of the lower engaging block 162 is aligned with the threaded groove in the middle of the upper engaging block 161 and the tightening bolt 163 is inserted to be threadedly connected with the threaded groove 1611. The tightening bolt 163 is tightened to press the upper engaging block 161 and the lower engaging block 162 to engage with the engaging grooves thereon. The structure is simple, so that after the upper engaging block 161 and the lower engaging block 162 are connected by the tightening bolt, relative rotation is not easy to occur between the two.

[0051] In this embodiment, the engagement grooves on the side where the upper engagement block and the lower engagement block are close to each other are arranged radially, so that the side where the upper engagement block and the lower engagement block are close to each other is toothed and meshes with each other, so that the two are not easy to rotate relative to each other after being connected, and after loosening the tightening bolt, the angle of the weeding coulter relative to the mounting frame on the horizontal plane can be flexibly adjusted.

[0052] In this embodiment, the hole can be a countersunk hole (with a large opening at the lower end). At this time, the head of the tightening bolt can be embedded in the countersunk hole, so that the lower end of the weeding coulter has good flatness and is more conducive to loosening the soil.

[0053] The weeding coulter described in this embodiment is tilted slightly downward by 1-5° toward the blade side, which makes the soil loosening effect better.

[0054] Example 2

[0055] like Fig.11 As shown, this embodiment provides a weeding device for an orchard, comprising a frame 2 and two obstacle-avoiding soil loosening and weeding mechanisms 1 as described in Example 1, wherein the frame 2 is horizontally arranged along the left-right direction, and the two obstacle-avoiding soil loosening and weeding mechanisms are symmetrically arranged at both ends of the frame 2, and the two mounting frames 11 are connected to or integrally formed with the frame 2, so that the weeding device for an orchard can loosen the soil and weed two adjacent plant rows in the orchard at the same time, and can avoid the plants on its own to avoid damaging the root systems of the plants.

[0056] In this embodiment, the ends of the two weeding coulters of the obstacle avoidance soil loosening and weeding mechanism 1 connected to the vertical shaft are close to each other. At this time, during operation, the two weeding coulters protrude from the two ends of the frame, and they can loosen the soil and weed between two adjacent rows of plants during the forward process.

[0057] in, Fig.11 The two rows of obstacles spaced apart along the length direction of the frame can be understood as two rows of fruit trees planted spaced apart in the front and rear directions, and the two obstacle-avoiding soil loosening and weeding mechanisms weed the bottom of the two rows of plants respectively. Fig.11 The dotted lines on both sides of each obstacle in the figure indicate the soil loosening and weeding area. Fig.11 The dotted arrow in the figure indicates the direction in which the weeding device in the orchard is moving.

[0058] The middle part of the upper end of the frame described in this embodiment has a three-point suspension part, so that it can be hung with the three-point suspension part at the rear end of the tractor, so that it can operate under the traction of the tractor. The three-point suspension part is a standard accessory of the agricultural machinery hung with the rear end of the tractor, which belongs to the prior art and will not be described here.

[0059] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. An obstacle avoidance type soil loosening and weeding mechanism, characterized in that: The invention comprises a mounting frame (11), a vertical shaft (12), a weeding plow (13), a driving member (14) and a sensing member (15); the mounting frame (11) is arranged along the front-rear direction; the vertical shaft (12) is vertically arranged at the rear and lower part of the mounting frame (11); the upper end of the vertical shaft (12) is rotatably connected to the mounting frame (11); the driving member (14) is mounted on the mounting frame (11) and is transmission-connected to the vertical shaft (12); the weeding plow (13) is mounted at the lower end of the vertical shaft (12); the sensing member (15) is arranged on the mounting frame (11) or on the vertical shaft (12) and is used for sensing whether the weeding plow (13) is close to an obstacle; the driving member (14) is used for driving the weeding plow (13) to swing backward to be stored to avoid the obstacle or swing forward to be reset.

2. The obstacle avoidance soil loosening and weeding mechanism according to claim 1, characterized in that: The weeding plow (13) is in the shape of a strip plate, and is arranged in the left-right direction, and one end of the weeding plow (13) is connected to the lower end of the vertical shaft (12), and the blade of the weeding plow (13) faces forward. The weeding plow (13) is driven by the driving member (14) to rotate backward to be distributed in the front-to-back direction for storage, or rotate forward to be distributed in the left-to-right direction for reset.

3. The obstacle avoidance soil loosening and weeding mechanism according to claim 1, characterized in that: The driving component (14) is a hydraulic driving component.

4. The obstacle avoidance soil loosening and weeding mechanism according to claim 3, characterized in that: The invention also comprises a reversing valve (17), wherein the driving member (14) is connected to the hydraulic station via the reversing valve (17), wherein the reversing valve and the sensing member are both mounted on the vertical shaft, wherein the sensing member (15) comprises a sensing part and a triggering part, wherein the triggering part of the sensing member (15) is close to or in contact with a valve core (171) of the reversing valve (17), wherein the sensing part of the sensing member (15) is located above and in front of the weeding coulter (13), and wherein the sensing part of the sensing member (15) is in contact with the obstacle. When the two sides of the sensor (15) collide with each other, the triggering part of the sensing member (15) squeezes the valve core (171) so that the driving member (14) drives the vertical shaft (12) to drive the weeding coulter (13) and the sensing member (15) to rotate to avoid the obstacle. When the sensing part of the sensing member (15) is separated from the obstacle, the valve core (171) rebounds to release the squeezing, and the driving member (14) drives the vertical shaft (12) to drive the weeding coulter (13) and the sensing member (15) to rotate to reset.

5. The obstacle avoidance soil loosening and weeding mechanism according to claim 4, characterized in that: The sensing member (15) comprises a rotating ring (151), a sensing rod (152) and an extrusion head (153). The rotating ring (151) is rotatably mounted on the vertical shaft (12) and is located between the weeding coulter (13) and the mounting frame. The sensing rod (152) is arranged at the upper front side of the blade of the weeding coulter (13), and one end of the sensing rod is connected to the rotating ring (151). The extrusion head (153) is connected to the rotating ring (151) and is close to the valve core (171). When the sensing rod (152) touches an obstacle, it deflects backwards and drives the extrusion head (153) to squeeze the valve core (171), so that the driving member (14) drives the vertical shaft (12) to drive the sensing member and the weeding coulter (13) to swing backwards to avoid the obstacle.

6. The obstacle avoidance soil loosening and weeding mechanism according to claim 3, characterized in that: The vertical shaft (12) further comprises a mounting plate (121), an upper shaft rod (122), a lower shaft rod (123) and a connecting plate (124); the upper shaft rod (122) and the lower shaft rod (123) are both arranged vertically; the mounting plate (121) is horizontally mounted on the lower end of the upper shaft rod (122); the connecting plate (124) is horizontally mounted on the upper end of the lower shaft rod (123); a plurality of first connecting holes (1211) are arranged on the mounting plate (121); a plurality of second connecting holes (1211) are arranged on the connecting plate (124); 241), the mounting plate (121) and the connecting plate (124) are fitted to each other and the upper shaft rod (122) and the lower shaft rod (123) are coaxially distributed, a plurality of the first connecting holes (1211) and a plurality of the second connecting holes (1241) correspond to each other and are aligned with each other, and a connecting piece (125) is respectively inserted to connect the mounting plate (121) and the connecting plate (124), and the upper end of the upper shaft rod (122) constitutes the upper end of the vertical shaft (12), and the lower end of the lower shaft rod (123) constitutes the lower end of the vertical shaft (12).

7. The obstacle avoidance soil loosening and weeding mechanism according to claim 6, characterized in that: The driving member (14) is a telescopic oil cylinder. One end of the driving member (14) is movably connected to the edge of the mounting plate (121), and the other end of the driving member (14) is movably connected to the front lower end of the mounting frame (11). The driving member (14) extends or contracts to drive the mounting plate (121) to drive the vertical shaft (12) to swing.

8. The obstacle avoidance soil loosening and weeding mechanism according to claim 1, characterized in that: It also comprises an engagement seat (16), through which the weeding coulter (13) is mounted on the lower end of the vertical shaft (12), and the engagement seat (16) is used to adjust the angle of the weeding coulter (13) relative to the mounting frame (11).

9. The obstacle avoidance soil loosening and weeding mechanism according to claim 8, characterized in that: The engagement seat (16) comprises an upper engagement block (161), a lower engagement block (162) and a tightening bolt (163); the upper engagement block (161) and the lower engagement block (162) are both cylindrical and vertically arranged; the lower end of the lower engagement block (162) is integrally formed with one end of the weeding coulter (13); the upper end of the upper engagement block (161) is coaxially distributed with the lower end of the vertical shaft (12) and is integrally formed; the lower end of the upper engagement block (161) and the upper end of the lower engagement block (162) are both concavely provided with engagement grooves at uniform intervals along the circumferential direction; A thread groove (1611) is coaxially recessed upward in the middle of the lower end of the upper engaging block (161), and a hole (1621) is coaxially provided in the middle of the lower engaging block (162) to penetrate upward and downward. The hole (1621) in the middle of the lower engaging block (162) is aligned with the thread groove in the middle of the upper engaging block (161) and the tightening bolt (163) is inserted to be threadedly connected with the thread groove (1611). The tightening bolt (163) is tightened to press the upper engaging block (161) and the lower engaging block (162) to engage with the engaging grooves thereon.

10. A weeding device for an orchard, characterized in that: The invention comprises a frame (2) and two obstacle-avoiding soil loosening and weeding mechanisms (1) as described in any one of claims 1 to 9, wherein the frame (2) is horizontally arranged in the left-right direction, and the two obstacle-avoiding soil loosening and weeding mechanisms are symmetrically arranged at both ends of the frame (2), and the two mounting frames (11) are connected to the frame (2) or are integrally formed.

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