A weeding device based on automatic tensioning transmission during adaptive ground adjustment

Abstract

The invention discloses a weeding device based on automatic tensioning transmission during adaptive ground adjustment, comprising a main body component, a main body bracket, a guide shell fixedly connected to the rear of the main body bracket; a weeding component, comprising a transmission box slidably connected to the guide shell, a weeding shaft rotatably connected to the lower end of the transmission box, weeding wheels are respectively connected to the weeding shafts on the left and right sides of the transmission box, a plurality of weeding shovels are arranged on the periphery of the weeding wheels, two adaptive swing arms are respectively hinged on the rear side of the main body bracket, the left and right sides of the rear end of the upper adaptive swing arm are respectively hinged with return springs, the front end of the return spring is hinged with the rear end of the lower part of the main body bracket, the rear end of the adaptive swing arm is hinged with a connecting rod, the front end of the connecting rod is fixed with an active bracket movably connected to the left and right sides of the transmission box, and a supporting sliding shovel is connected below the connecting rod; the invention can realize adaptive adjustment of the soil penetration depth of the weeding shovel, the machine operation is more stable, and the power consumption is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, in particular to a weeding device with automatic tensioning transmission based on adaptive ground adjustment. Background Art

[0002] In traditional technology, chemical weed control or manual weed control is used to remove weeds in the field. Manual weed control is time-consuming and labor-intensive, with high work intensity and low weed control efficiency. In addition to polluting the environment, chemical weed control also leaves pesticide residues on the land, which is harmful to human health. In the prior art, mechanical weeding is used to remove field grass. For example, a weeding machine named "A multifunctional machine for row weeding" with a publication number of CN111149454A is disclosed. The weeder includes a frame on which a plurality of transmission boxes arranged in a row are arranged. The transmission box is tilted backward and one end extending downward is rotatably connected to a transmission shaft. In the left and right directions, both ends of the transmission shaft extend out of the transmission box. The two ends of the transmission shaft extending out of the transmission box are respectively connected to row weeding wheels. A plurality of weeding blades are arranged on the periphery of the row weeding wheels. Using the weeder for weeding can reduce labor intensity, will not pollute the environment, and is more environmentally friendly. However, when weeding, the terrain of the field is changeable, and the position of the row weeding wheels in the height direction is fixed, which cannot adapt to the field environment with changing terrain. The weeding depth is different and the power consumption of the machine is large. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the above and / or existing problems in the existing mechanical weeding, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a weeding device with automatic tensioning transmission based on adaptive ground adjustment, which can adaptively adjust the height of the supporting shovel according to changes in terrain, thereby realizing adaptive adjustment of the depth of the weeding shovel into the soil, keeping the weeding operation depth consistent, making the machine operation more stable, and reducing power consumption.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a weeding device based on automatic tensioning transmission during adaptive ground adjustment, comprising:

[0007] The main body assembly comprises a main body bracket, and a guide housing having a sliding opening is fixedly connected to the rear of the main body bracket;

[0008] The weeding assembly includes a transmission box which is slidably connected to the guide shell through a sliding opening, the lower end of the transmission box is rotatably connected to a weeding shaft, the weeding shafts on the left and right sides of the transmission box are respectively connected to weeding wheels, a plurality of weeding shovels are arranged on the periphery of the weeding wheels, the upper and lower ends of the main body bracket are respectively hinged with adaptive rocker arms on the rear side, the upper adaptive rocker arms are respectively hinged with return springs at the ends away from the transmission box in the left and right directions, the return springs extend forward and obliquely downward at one end away from the adaptive rocker arms, the end of the return springs away from the adaptive rocker arms is hinged to the rear end of the lower part of the main body bracket, the rear end of the adaptive rocker arms is hinged with a connecting rod, the front end of the connecting rod is fixed with an active bracket movably connected to the left and right sides of the transmission box, and a supporting sliding shovel is connected below the connecting rod.

[0009] As a preferred solution of the weeding device based on automatic tensioning transmission during adaptive ground adjustment described in the present invention, it includes an upper connecting frame with an upper mounting groove facing forward and a lower connecting frame with a lower mounting groove, the front end of the upper adaptive rocker arm is hinged to the rear side of the upper connecting frame, the front end of the lower adaptive rocker arm is hinged to the rear side of the lower connecting frame, and the end of the return spring away from the adaptive rocker arm is hinged to the rear end of the lower connecting frame, and a plurality of fixed plates extending backward are fixed between the upper connecting frame and the lower connecting frame, and the guide shell is fixedly connected to the plurality of fixed plates.

[0010] As a preferred solution of the weeding device with automatic tensioning transmission based on adaptive ground adjustment described in the present invention, the lower part of the connecting rod is detachably connected to an adjusting rod, and the supporting slide is connected to the lower end of the adjusting rod.

[0011] As a preferred solution of the weeding device with automatic tensioning transmission based on adaptive ground adjustment described in the present invention, the lower part of the connecting rod is provided with a plurality of adjustment holes arranged at intervals in the height direction, and the adjusting rod is provided with a plurality of fixing holes which can be coaxial with the adjustment holes.

[0012] As a preferred solution of the weeding device with automatic tensioning transmission based on adaptive ground adjustment described in the present invention, a hinge ear is fixed to the upper end of the supporting slide, the supporting slide is hinged to the lower end of the adjusting rod via the hinge ear, the rear end of the adjusting rod is connected to a compression spring, and the rear end of the compression spring is hinged to the upper end of the rear part of the supporting slide.

[0013] As a preferred solution of the weeding device with automatic tensioning transmission based on adaptive ground adjustment described in the present invention, the guide shell is rotatably connected with a horizontally arranged transmission shaft, the transmission shaft is connected with a transmission module in a transmission box, the transmission module includes a transmission sprocket connected to the transmission shaft, an upper sprocket and a lower sprocket respectively at the upper and lower parts of the transmission box, a transmission chain is connected between the upper sprocket, the transmission sprocket and the lower sprocket, and the left and right ends of the transmission box are respectively provided with intermediate movable grooves that enable the transmission box to move up and down relative to the transmission shaft.

[0014] The cam is an axially-coupled device for camming a wheeled vehicle and a guide wheel is located adjacent to the guide wheel, wherein the guide wheel is mounted on a support frame and the guide frame is connected to a first drive shaft and a second drive shaft.

[0015] As a preferred solution of the weeding device based on automatic tensioning transmission during adaptive ground adjustment described in the present invention, the upper transmission plate is fixedly connected to the outer side of the guide shell, and an upper sliding groove is opened at the end of the upper transmission plate away from the transmission box, and an upper rotating plate is connected to the first rotating shaft extending out of the guide shell. The upper rotating plate is provided with a curved first rotating groove, and the upper transmission plate is slidably connected to an upper sliding rod via the upper sliding groove, and an upper sliding column is fixed to one end of the upper sliding rod relative to the upper rotating plate, which just extends into the first rotating groove, and the upper end of the upper sliding rod is fixedly connected to the outer side of the transmission box. When the transmission box moves upward, the upper rotating plate drives the upper swing plate to swing upward under the action of the upper sliding column.

[0016] The cam is secured to the outside of the housing and is easily disengaged from the drive train by means of the second actuator, which enables the cam to move freely in the housing, thereby ensuring that the cam is always in a state of being easily disengaged from the outside of the housing and that the lower actuator is automatically disengaged from the housing.

[0017] As a preferred solution of the weeding device with automatic tensioning transmission based on adaptive ground adjustment described in the present invention, the front and rear ends of the inner side of the guide shell are rotatably connected to a plurality of rollers, and the front and rear sides of the transmission box are respectively tightly attached to the rollers.

[0018] The beneficial effects of the present invention are as follows: the supporting shovel and the weeding shovel change with the terrain. Taking the increase in ground height as an example, the ground moves up against the supporting shovel, and the adaptive swing arm swings upward, driving the transmission box to move up. When the transmission box moves up, the transmission chain, the upper sliding rod and the lower sliding rod move up as a whole, the upper sliding rod drives the upper rotating disk to rotate via the upper sliding column, the lower sliding rod drives the lower rotating disk to rotate via the lower sliding column, the upper rotating disk drives the first adjusting sprocket to swing upward and backward via the upper swing plate, reducing the tension of the transmission chain above the transmission sprocket, ensuring that the transmission chain can move smoothly while moving up as a whole, and the lower rotating disk swings downward The plate drives the second adjusting sprocket to swing upward and forward, and the second adjusting sprocket adjusts the tension of the transmission chain when moving upward, so that the transmission chain can remain in a tensioned state when moving upward, thereby improving the reliability of the transmission connection between the transmission sprocket and the second sprocket, thereby ensuring that when the weeding shovel adaptively moves upward as the ground height increases, the weeding wheel can still rotate stably, thereby improving the stability of the weeding operation; when returning to normal ground, the supporting sliding shovel moves downward and resets under the action of the reset spring, the adaptive swing arm swings downward and resets, and the supporting sliding shovel drives the transmission box to move downward and reset via the movable bracket, thereby realizing the weeding operation of the weeding shovel adaptive to changes in ground height and consistent weeding depth. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0020] Figure 1 The three-dimensional structure of the present invention Figure 1 .

[0021] Figure 2 The three-dimensional structure of the present invention Figure 2 .

[0022] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0023] Figure 4 It is a three-dimensional structural diagram of the transmission box (the transmission box is set to a transparent state) and its internal structure in the present invention.

[0024] Figure 5 The three-dimensional structure of the present invention Figure 3.

[0025] Figure 6 for Figure 5 A partial enlarged view of point B in the middle.

[0026] Figure 7 for Figure 5 A partial enlarged view of point C in the middle.

[0027] Figure 8 It is the right side view of the present invention.

[0028] Fig. 9 for Figure 8 The view from DD in the middle.

[0029] Fig.10 for Fig. 9 A partial enlarged view of point E in the middle.

[0030] Fig.11 for Fig. 9 A partial enlarged view of point F in the middle.

[0031] Fig.12 The three-dimensional structure of the present invention Figure 4 .

[0032] Fig.13 for Fig.12 A partial enlarged view of point G in the middle.

[0033] Fig.14 It is a partial three-dimensional structural diagram of the present invention when it is connected to a frame.

[0034] In the figure, 100 main assembly, 101 main bracket, 101a upper connecting frame, 101a-1 upper mounting sink, 101a-2 first upper connecting hole, 101b fixing plate, 101c vertical beam, 101d lower connecting frame, 101d-1 lower mounting sink, 101d-2 first lower connecting hole, 102 guide housing, 102a limiting bracket, 102a-1 outer limiting hole, 200 weeding assembly, 201 transmission box, 201a left transmission housing, 201b right transmission housing, 201 b-1 upper support ring, 201b-2 lower support ring, 202 return spring, 203 adaptive swing rod, 204 connecting rod, 204a movable bracket, 204a-1 inner limit hole, 204a-2 sliding groove, 205 adjustment rod, 206 compression spring, 207 support sliding shovel, 207a sliding soil surface, 207b hinge ear, 208 weeding shaft, 209 weeding wheel, 210 weeding shovel, 211 transmission module, 211a upper swing plate, 211b first rotating shaft, 211b-1 upper center countersunk hole, 211c transmission sprocket, 211d second rotating shaft, 211d-1 lower center countersunk hole, 211e lower swing plate, 211f second adjusting sprocket, 211g second sprocket, 211h transmission chain, 211i first adjusting sprocket, 211j first sprocket, 211k guide plate, 212 lower transmission plate, 212a lower sliding groove, 213 lower rotating plate, 213a second rotating groove, 213b lower center hole, 214 lower sliding rod, 215 lower sliding column, 216 upper rotating plate, 216a first rotating groove, 216b upper center hole, 217 upper sliding column, 218 upper transmission plate, 218a upper sliding groove, 219 upper sliding rod, 220 fixed plate, 222 lower limit plate, 223 upper limit plate, 224 pin shaft, 300 driving sprocket, 400 driving chain, 500 intermediate sprocket, 600 transmission shaft, 700 driving box, 800 frame, X intermediate movable slot, S upper rotating hole, M lower rotating hole, N left movable slot. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0038] Example 1

[0039] Reference Figure 1 to Figure 3 , which is the first embodiment of the present invention, provides a weeding device with automatic tensioning transmission based on adaptive ground adjustment, wherein the supporting slide 207 and the weeding shovel 210 change with the terrain, ensuring the consistency of the weeding operation depth and improving the operation stability.

[0040] A weeding device based on automatic tensioning transmission during adaptive ground adjustment includes a main component 100, which includes a main frame 101, and a guide shell 102 with a sliding opening is fixedly connected to the rear of the main frame 101; a weeding component 200 for weeding is connected to the main frame 101.

[0041] Specifically, the weeding assembly 200 includes a transmission box 201 that is slidably connected to the guide shell 102 through a sliding port, the lower end of the transmission box 201 is rotatably connected to a weeding shaft 208, the weeding shafts 208 on the left and right sides of the transmission box 201 are respectively connected to weeding wheels 209, and a plurality of weeding shovels 210 are arranged on the periphery of the weeding wheels 209, and the upper and lower ends of the main frame 101 are respectively hinged to the rear side facing the rear, and the upper and lower ends of the adaptive swing rod 203 are respectively hinged to a return spring 202 at one end away from the transmission box 201 in the left and right directions, and the end of the return spring 202 away from the adaptive swing rod 203 extends forward and obliquely downward, and the end of the return spring 202 away from the adaptive swing rod 203 is hinged to the rear end of the lower part of the main frame 101, and the rear end of the adaptive swing rod 203 is hinged to a connecting rod 204, and the front end of the connecting rod 204 is fixed with an active bracket 204a that is movably connected to the left and right sides of the transmission box 201. The left and right ends of the guide housing 102 are provided with sliding grooves 204a-2, the left and right ends of the transmission box 201 are respectively fixedly connected with pin shafts 224, the movable bracket 204a is just slidably connected to the pin shaft 224 through the sliding grooves 204a-2, and the guide housing 102 is fixedly connected with a limit bracket 102a with an upward opening for limiting the swing position of the movable bracket 204a, and the gap between the upper side of the bottom of the limit bracket 102a and the lower side of the movable bracket 204a is greater than the ground height. Change value, outer limit holes 102a-1 are provided on the limit brackets 102a on the left and right sides of the opening, and inner limit holes 204a-1 coaxial with the limit holes are provided on the movable bracket 204a; a supporting slide 207 is connected to the bottom of the connecting rod 204, the front end of the supporting slide 207 is tilted upward from the back to the front, and the rear end of the supporting slide 207 is tilted upward from the front to the back, and the upper side of the tilted front end of the supporting slide 207 is a sliding soil surface 207a tilted downward from the back to the front.

[0042] The main frame 101 is fixedly connected to the frame 800, and is connected to the frame 800 and the front walking device (the walking device is preferably a tractor) in a liftable manner. It is a prior art and is not an improvement point of the present application, and there is no need to draw a specific structure; the number of the present application connected to the frame 800 is set according to actual needs, and two adjacent present applications are also installed according to actual needs. The installation method is a prior art, and there is no need to disclose its specific installation structure; the support sliding shovel 207 is used to limit the weeding depth of the weeding shovel 210; on hard ground such as cement ground outside the field Before driving on a hard road, the main support 101 is in a lifted state, and a limit pin is used to pass through an outer limit hole 102a-1, an inner limit hole 204a-1 and another outer limit hole 102a-1 in sequence, so that the height of the movable support 204a is fixed relative to the guide shell 102, reducing the force of the return spring 202, ensuring the stability of the tool during normal driving on a hard ground, and improving the service life; the weeding shovel 210 and the supporting sliding shovel 207 are away from the ground; when the walking device walks to the field to prepare for weeding operations, the limit pin is removed, The support slide 207 is attached to the ground under the action of the return spring 202. When the walking device moves forward, the support slide 207 slides along the ground. When the ground height changes, the ground height becomes higher as an example. The ground pushes the support slide 207 upward, and the support slide 207 drives the connecting rod 204 upward. The connecting rod 204 drives the transmission box 201 upward, and the transmission box 201 drives the weeding shovel 210 to move upward accordingly, ensuring that the weeding depth remains consistent when the terrain changes. The return spring 202 is further compressed. When When the ground height returns to the reference height, the adaptive swing arm 203 swings downward under the action of the reset spring 202, and the adaptive swing arm 203 drives the supporting slide 207 to move downward via the connecting rod 204. At the same time, the connecting rod 204 drives the transmission box 201 to move downward via the movable bracket 204a, and the weeding shaft 208 moves downward and resets. The supporting slide 207 always slides on the ground, so that the weeding shovel 210 and the supporting slide 207 can adaptively adjust their heights according to the changes in the ground height, thereby ensuring the consistency of the weeding depth and improving the stability of the machine operation.

[0043] Specifically, the lower part of the connecting rod 204 is detachably connected to the adjusting rod 205, the supporting slide 207 is connected to the lower end of the adjusting rod 205, the lower part of the connecting rod 204 is provided with a plurality of adjusting holes arranged at intervals in the height direction, the adjusting rod 205 is provided with a plurality of fixing holes which can be coaxial with the adjusting holes, the upper end of the supporting slide 207 is fixed with a hinge ear 207b, the supporting slide 207 is hinged to the lower end of the adjusting rod 205 via the hinge ear 207b, the rear end of the adjusting rod 205 is connected with a compression spring 206, and the rear end of the compression spring 206 is hinged to the upper end of the rear part of the supporting slide 207.

[0044] Before operation, the support shovel 207 is hinged to the lower end of the adjustment rod 205 by default. The installation height of the support shovel 207 is adjusted according to the weeding depth, the adjustment hole is aligned with the required fixing hole, and the fixing bolt is screwed into the adjustment hole and the fixing hole from one side of the adjustment rod 205 in the left and right directions in turn. The fixing nut is screwed onto the fixing bolt so that the fixing nut is pressed against the side of the connecting rod 204 away from the adjustment rod 205 in the left and right directions to achieve the installation of the adjustment rod 205. During operation, when the support shovel 207 encounters obstacles such as stones, The raised section at the front end of the support slide 207 swings upward under the action of the obstacle, and the compression spring 206 is further compressed. When leaving the obstacle, the support slide 207 quickly returns to its original position under the action of the compression spring 206 and fits on the ground. The raised section at the front prevents the accumulation of soil when the support slide 207 slides forward. Even if there is continuous accumulation of soil at the front end of the support slide 207 during the sliding process, the soil can slide down along the sliding surface 207a and will not accumulate on the support slide 207, thereby reducing the sliding resistance of the support slide 207.

[0045] Specifically, the front and rear ends of the inner side of the guide housing 102 are rotatably connected with a plurality of rollers, and the front and rear sides of the transmission box 201 are respectively tightly attached to the rollers.

[0046] When the transmission box 201 moves up and down, the front and rear sides of the transmission box 201 slide along the rotatable rollers respectively, reducing the friction of the transmission box 201 moving up and down, while ensuring the vertical movement of the transmission box 201, avoiding dislocation, and improving the reliability of the operation.

[0047] Example 2

[0048] Reference Figure 5 , which is the second embodiment of the present invention, provides a weeding device with automatic tensioning transmission based on adaptive ground adjustment, which can further facilitate the fixed connection between the present invention and the frame 800.

[0049] The main support 101 includes an upper connecting frame 101a having an upper mounting groove 101a-1 facing forward and a lower connecting frame 101d having a lower mounting groove 101d-1. The front end of the upper adaptive rocker arm 203 is hinged to the rear side of the upper connecting frame 101a, and the front end of the lower adaptive rocker arm 203 is hinged to the rear side of the lower connecting frame 101d. One end of the return spring 202 away from the adaptive rocker arm 203 is hinged to the rear end of the lower connecting frame 101d. A vertical beam 101c is fixed between the upper connecting frame 101a and the lower connecting frame 101d. The rear end of the vertical beam 101c is fixedly connected to a plurality of fixed plates 220101b extending backward, and the guide shell 102 is fixedly connected to the plurality of fixed plates 220101b.

[0050] An upper crossbeam and a lower crossbeam are fixed to the rear end of the frame 800. When the present application is installed on the frame 800, the upper connecting frame 101a is just plugged into the upper crossbeam through the upper mounting groove 101a-1 from back to front, and the lower connecting frame 101d is just plugged into the lower crossbeam through the lower mounting groove 101d-1 from back to front. At least two first upper connecting holes 101a-2 and at least two first lower connecting holes 101d-2 are arranged on the upper connecting frame 101a and the lower connecting frame 101d, respectively. A plurality of second upper connecting holes that can be coaxial with the first upper connecting hole 101a-2 are arranged on the upper crossbeam, and a plurality of second lower connecting holes that can be coaxial with the first lower connecting hole 101d-2 are arranged on the lower crossbeam. To move the present application to a suitable position, reinforcing bolts are used to be screwed into the upper first upper connecting hole 101a-2, the second upper connecting hole and the lower first upper connecting hole in sequence from top to bottom. Hole 101a-2, screw the reinforcing nut onto the reinforcing bolt below the upper connecting frame 101a, so that the reinforcing nut is pressed against the lower side of the upper connecting frame 101a, and use the reinforcing bolt to screw into the first lower connecting hole 101d-2, the second lower connecting hole and the first lower connecting hole 101d-2 from top to bottom in sequence, and screw the reinforcing nut onto the reinforcing bolt below the lower connecting frame 101d, so that the reinforcing nut is pressed against the lower side of the lower connecting frame 101d, thereby realizing the fixed connection between the main support 101 and the frame 800, and the installation is convenient; the position of the present application in the left and right directions can also be adjusted according to the row spacing, only the reinforcing nuts and reinforcing bolts need to be removed, and the second upper connecting hole corresponding to the first upper connecting hole 101a-2 and the second lower connecting hole corresponding to the first lower connecting hole 101d-2 can be reselected, and then the main support 101 is fixed to the frame 800 again.

[0051] Example 3

[0052] Reference Figure 4 and Fig.14 , which is the third embodiment of the present invention, provides a weeding device with automatic tensioning transmission based on adaptive ground adjustment, which can further improve the rotation stability of the weeding shaft 208 when the transmission box 201 moves up and down.

[0053] Specifically, the left and right ends of the guide housing 102 are rotatably connected with a rotating sleeve, and the rotating sleeve is connected with a horizontally arranged transmission shaft 600. The left and right ends of the transmission shaft 600 are rotatably connected to the two ends of the frame 800. When a plurality of the present applications are installed on the frame 800, the transmission shaft 600 just passes through the transmission holes set in the center of the transmission sprockets 211c of the present applications. The shape of the transmission hole is the same as that of the transmission shaft 600. The shape of the transmission shaft 600 is a non-circular shape. The transmission box 201 is composed of a left transmission housing 201a and a right transmission housing 201b. The right transmission housing 201b is fixedly connected to the right side of the left transmission housing 201a. The left end of the left transmission housing 201a is provided with a left installation hole. The right end of the right transmission housing 201b is provided with a right installation groove. When the right transmission housing 201b is fixedly connected to the right side of the left transmission housing 201a, the left installation groove and the right installation groove form an installation cavity. The transmission shaft 600 is connected to a transmission module 211 in the installation cavity. The transmission module 211 includes a transmission sprocket 211c connected to the transmission shaft 600, an upper sprocket and a lower sprocket respectively connected to the upper and lower parts of the transmission box 201 for rotation. A transmission chain 211h is connected between the upper sprocket, the transmission sprocket 211c and the lower sprocket. The left and right ends of the transmission box 201 are respectively provided with intermediate movable grooves X that enable the transmission box 201 to move up and down relative to the transmission shaft 600. The guide housing 102 is also provided with a transmission module 211c in the installation cavity. A fixed support plate is fixedly connected to the transmission box 201, and guide plates 211k are fixedly connected to the left transmission housing 201a on the front and rear sides of the fixed support plate. When the transmission box 201 moves up and down, the two guide plates 211k slide along the front and rear sides of the fixed support plate respectively, and the fixed support plate is rotatably connected with a first rotating shaft 211b obliquely above the transmission sprocket 211c and a second rotating shaft 211d obliquely below the transmission sprocket 211c. A left movable groove N is opened on the left transmission housing 201a, which can make the transmission box 201 move up and down relative to the first rotating shaft 211b or the second rotating shaft 211d, and the rotation centers of the first rotating shaft 211b and the second rotating shaft 211d are both on the transmission sprocket 211 c behind the rotation center, an upper swing plate 211a is connected to the first rotating shaft 211b, and the end of the upper swing plate 211a away from the first rotating shaft 211b is tilted upward in the direction of the transmission chain 211h, and the end of the upper swing plate 211a away from the second rotating shaft 211d is rotatably connected to the first adjusting sprocket 211i that cooperates with the transmission chain 211h, and a lower swing plate 211e is connected to the second rotating shaft 211d, and the end of the lower swing plate 211e away from the second rotating shaft 211d is tilted downward in the direction of the transmission chain 211h, and the end of the lower swing plate 211e away from the second rotating shaft 211d is rotatably connected to the second adjusting sprocket 211f that cooperates with the transmission chain 211h.

[0054] The structure for realizing automatic rotation of the transmission shaft 600 is as follows (eg Fig.14), a drive box 700 is arranged on the frame 800, a drive sprocket 300 is connected to the output shaft of the drive box 700, an intermediate sprocket 500 is connected to the transmission shaft 600, and the drive sprocket 300 is connected to the intermediate sprocket 500 via a drive chain 400; the hydraulic motor on the front walking device provides input power to the drive box 700 via a universal joint, which is a prior art; during weeding operation, the output shaft of the drive box 700 rotates, the output shaft drives the drive sprocket 300 to rotate, the drive sprocket 300 drives the intermediate chain to rotate via the drive chain 400, the intermediate chain drives the transmission shaft 600 to rotate, the transmission shaft 600 drives the drive sprocket 211c to rotate, and the drive sprocket 211c drives the drive chain 400 to rotate. The transmission chain 211h drives the first sprocket 211j and the second sprocket 211g to rotate, and the second sprocket 211g drives the weeding shaft 208 to rotate. The weeding shaft 208 drives the weeding shovel 210 to rotate via the weeding wheel 209. The continuously rotating weeding shovel 210 shovels away the weeds to achieve automatic weeding. During the weeding operation, the supporting shovel 207 and the weeding shovel 210 change with the terrain. Taking the increase in ground height as an example, the ground moves up against the supporting shovel 207, driving the transmission box 201 to move up. When the transmission box 201 moves up, it drives the transmission chain 211h to move up as a whole. The length of the transmission chain 211h above the transmission sprocket 211c becomes longer than before, and the first rotating shaft 211b and the second rotating shaft 211d rotate, causing the upper swing plate 211a to rotate backward, reducing the tension of the transmission chain 211h above the transmission sprocket 211c, ensuring that the transmission chain 211h can operate smoothly while moving upward as a whole, and the length of the transmission chain 211h below the transmission sprocket 211c becomes smaller than before, and the lower swing plate 211e is driven to swing upward by the second rotating shaft 211d, and the second adjusting sprocket 211f adjusts the tension of the transmission chain 211h when moving upward, so that the transmission chain 211h can still maintain a tensioned state when moving upward, thereby improving the reliability of the transmission connection between the transmission sprocket 211c and the second sprocket 211g, thereby improving the rotation stability of the weeding shaft 208 That is, when the weeding shovel 210 adaptively moves upward as the ground height increases, the weeding wheel 209 can still rotate stably, thereby improving the stability of the weeding operation. When the ground returns to normal, the supporting slide 207 moves downward and resets under the action of the reset spring 202, and the adaptive swing arm 203 swings downward and resets. The supporting slide 207 drives the transmission box 201 to move downward and reset via the movable bracket 204a, and the first rotating shaft 211b and the second rotating shaft 211d rotate in opposite directions. When the transmission box 201 moves downward, the smooth operation and tension state of the transmission chain 211h are guaranteed, so that the weeding shovel 210 can adaptively operate the weeding operation of the ground height change, the weeding depth is consistent, and the operation of the machine is more stable.

[0055] Example 4

[0056] Reference Figure 5 to Figure 11, which is the third embodiment of the present invention, provides a weeding device based on automatic tensioning transmission during adaptive ground adjustment, which can further realize automatic rotation of the upper swing plate 211a and the lower swing plate 211e when the transmission box 201 moves up and down.

[0057] Specifically, an upper transmission plate 218 is fixedly connected to the outer side of the guide housing 102, and a vertical upper sliding groove 218a is opened at one end of the upper transmission plate 218 away from the transmission box 201, and an upper rotating plate 216 is connected to the first rotating shaft 211b extending out of the guide housing 102, and a spirally arranged first rotating groove 216a is opened on the upper rotating plate 216. The upper transmission plate 218 is slidably connected to an upper sliding rod 219 through the upper sliding groove 218a, and an upper sliding column 217 that just extends into the first rotating groove 216a is fixed to one end of the upper sliding rod 219 relative to the upper rotating plate 216, and the upper end of the upper sliding rod 219 is fixedly connected to the outer side of the transmission box 201. When the transmission box 201 moves upward, the upper rotating plate 216 drives the upper swing plate 211a to swing upward under the action of the upper sliding column 217. The guide housing 102 is fixedly connected to a lower transmission plate 212 at the outer side thereof, and a vertically arranged lower sliding groove 212a is provided at one end of the lower transmission plate 212 away from the transmission box 201, and a lower rotating plate 213 is connected under the first rotating shaft 211b extending out of the guide housing 102, and a spirally arranged second rotating groove 213a is provided under the lower rotating plate 213, and the lower transmission plate 212 is slidably connected to a lower sliding rod 214 via the lower sliding groove 212a, and a lower sliding column 215 which just extends into the second rotating groove 213a is fixed to one end of the lower sliding rod 214 relative to the lower rotating plate 213, and the lower end of the lower sliding rod 214 is fixedly connected to the outer side of the transmission box 201, and when the transmission box 201 moves upward, the lower rotating plate 213 drives the lower swing plate 211e to swing upward under the action of the lower sliding column 215.

[0058] The upper rotating disk 216 has an upper center hole 216b at its center, an upper center countersunk hole 211b-1 coaxial with the upper center hole 216b is formed at one end of the first rotating shaft 211b relative to the upper rotating disk 216, a lower center hole 213b is formed at the center of the lower rotating disk 213, and a lower center countersunk hole 211d-1 coaxial with the lower center hole 213b is formed at one end of the second rotating shaft 211d relative to the lower rotating disk 213. When installing, a fastening bolt is screwed into the upper center hole 216b and the upper center countersunk hole 211b-1 to fix the upper rotating disk 216 on the first rotating shaft 211b, and a fastening bolt is screwed into the lower center countersunk hole 211d-1 to fix the upper rotating disk 216 on the first rotating shaft 211b. The hole 213b and the lower center countersunk hole 211d-1 fix the lower rotating disk 213 to the second rotating shaft 211d; when the transmission box 201 moves up, the transmission chain 211h is driven to move up as a whole, the upper sliding rod 219 and the lower sliding rod 214 are moved up, the upper sliding rod 219 drives the upper rotating disk 216 to rotate via the upper sliding column 217, the lower sliding rod 214 drives the lower rotating disk 213 to rotate via the lower sliding column 215, the upper rotating disk 216 drives the first rotating shaft 211b to rotate, and the first rotating shaft 211b drives the first adjusting sprocket 211i to swing upward and backward via the upper swing plate 211a, reducing the transmission sprocket 21 1c, the tension of the transmission chain 211h above ensures that the transmission chain 211h can move smoothly while moving upward as a whole, the lower rotating disk 213 drives the second rotating shaft 211d to rotate, and the second rotating shaft 211d drives the second adjusting sprocket 211f to swing upward and forward through the lower swinging plate 211e, and the second adjusting sprocket 211f adjusts the tension of the transmission chain 211h when moving upward, so that the transmission chain 211h can still maintain a tensioned state when moving upward, thereby improving the reliability of the transmission connection between the transmission sprocket 211c and the second sprocket 211g, thereby ensuring that when the weeding shovel 210 moves upward adaptively as the ground height increases, the weeding wheel 2 09 can still rotate stably, improving the stability of the weeding operation. When returning to the normal ground, the supporting slide 207 moves down and resets under the action of the reset spring 202, and the adaptive swing arm 203 swings downward and resets. The supporting slide 207 drives the transmission box 201 to move down and reset through the movable bracket 204a. When the transmission box 201 moves downward, the upper sliding rod 219 and the lower sliding rod 214 move downward, so that the first rotating shaft 211b and the second rotating shaft 211d rotate in the opposite direction, and the upper swing plate 211a and the lower swing plate 211e swing downward, so that the weeding shovel 210 can adapt to the changes in the ground height and the weeding depth is consistent.

[0059] Example 5

[0060] Reference Fig.12 and Fig.13 , which is the third embodiment of the present invention, provides a weeding device based on automatic tensioning transmission during adaptive ground adjustment, which can further improve the reliability of the rotation of the upper rotating disk 216 and the lower rotating disk 213.

[0061] Specifically, an upper support ring 201b-1 and a lower support ring 201b-2 are fixedly connected to the right side of the guide shell 102, an upper rotating hole S is opened in the center of the upper support ring 201b-1, the upper transmission disk 218 is in the upper rotating hole S, and the upper rotating disk 216 is just rotatably connected to the upper support ring 201b-1 through the upper rotating hole S, and the upper support ring 201b-1 is fixedly connected to the side away from the guide shell 102 with an upper limit plate 223 for limiting the axial movement of the upper rotating disk 216, a lower rotating hole M is opened in the center of the lower support ring 201b-2, the lower transmission disk 212 is in the lower rotating hole M, and the lower rotating disk 213 is just rotatably connected to the lower support ring 201b-2 through the lower rotating hole M, and the lower support ring 201b-2 is fixedly connected to the side away from the guide shell 102 with a lower limit plate 222 for limiting the axial movement of the lower rotating disk 213.

[0062] Through the structural arrangement of the upper support ring 201b-1 and the upper limit plate 223, rotational support is provided for the upper rotating disk 216, and the axial movement of the upper rotating disk 216 is limited; through the structural arrangement of the lower support ring 201b-2 and the lower limit plate 222, rotational support is provided for the lower rotating disk 213, and the axial movement of the lower rotating disk 213 is limited, thereby improving the structural reliability when the upper rotating disk 216 and the lower rotating disk 213 are respectively connected to the guide shell 102.

[0063] It should be noted that the direction "front" mentioned in the above embodiments is consistent with the forward direction of the walking device, the direction opposite to the front is the rear, and the direction perpendicular to the front and rear directions and parallel to the ground is the left and right direction. The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A weeding device with automatic tensioning transmission based on adaptive ground adjustment, characterized in that: These include, The main body assembly (100) comprises a main body support (101), wherein a guide housing (102) having a sliding opening is fixedly connected to the rear of the main body support (101), and the main body support (101) comprises an upper connection frame (101a) having an upper mounting groove (101a-1) facing forward and a lower connection frame (101d) having a lower mounting groove (101d-1); The weeding assembly (200) comprises a transmission box (201) which is slidably connected to the guide housing (102) via a sliding opening, the lower end of the transmission box (201) is rotatably connected to a weeding shaft (208), the weeding shafts (208) on the left and right sides of the transmission box (201) are respectively connected to weeding wheels (209), a plurality of weeding shovels (210) are arranged on the periphery of the weeding wheels (209), and the upper and lower ends of the main frame (101) are respectively hinged to the rear side with adaptive swing rods (203), and the upper adaptive swing rod (203) is away from the transmission box (201) in the left and right directions. 1) are respectively hinged with a return spring (202), one end of the return spring (202) away from the adaptive swing rod (203) extends forward and obliquely downward, one end of the return spring (202) away from the adaptive swing rod (203) is hinged to the rear end of the lower part of the main support (101), the rear end of the adaptive swing rod (203) is hinged with a connecting rod (204), the front end of the connecting rod (204) is fixed with a movable bracket (204a) movably connected to the left and right sides of the transmission box (201), and the lower part of the connecting rod (204) is connected to a supporting slide (207),The front end of the upper adaptive swing rod (203) is hinged to the rear side of the upper connection frame (101a), the front end of the lower adaptive swing rod (203) is hinged to the rear side of the lower connection frame (101d), one end of the return spring (202) away from the adaptive swing rod (203) is hinged to the rear end of the lower connection frame (101d), a plurality of fixed plates extending backward are fixed between the upper connection frame (101a) and the lower connection frame (101d), the guide housing (102) is fixedly connected to the plurality of fixed plates, and a horizontally arranged transmission shaft is rotatably connected to the guide housing (102) (600), the transmission shaft (600) is connected to a transmission module (211) in a transmission box (201), the transmission module (211) comprises a transmission sprocket (211c) connected to the transmission shaft (600), an upper sprocket and a lower sprocket respectively located at the upper and lower parts of the transmission box (201), a transmission chain (211h) is connected between the upper sprocket, the transmission sprocket (211c) and the lower sprocket, and the left and right ends of the transmission box (201) are respectively provided with intermediate movable grooves that enable the transmission box (201) to move up and down relative to the transmission shaft (600). (X), the guide housing (102) is also fixedly connected to a fixed support plate in the transmission box (201), and the fixed support plate is rotatably connected to a first rotating shaft (211b) obliquely above the transmission sprocket (211c) and a second rotating shaft (211d) obliquely below the transmission sprocket (211c), and the first rotating shaft (211b) is connected to an upper swing plate (211a), and one end of the upper swing plate (211a) away from the first rotating shaft (211b) is tilted upward in the direction of the transmission chain (211h), and the upper swing plate The end of (211a) away from the second rotating shaft (211d) is rotatably connected to a first adjusting sprocket (211i) matched with the transmission chain (211h); the second rotating shaft (211d) is connected to a lower swing plate (211e); the end of the lower swing plate (211e) away from the second rotating shaft (211d) is tilted downward in the direction of the transmission chain (211h); the end of the lower swing plate (211e) away from the second rotating shaft (211d) is rotatably connected to a second adjusting sprocket (211f) matched with the transmission chain (211h).

2. The weeding device with automatic tensioning transmission based on adaptive ground adjustment as claimed in claim 1, characterized in that: The lower part of the connecting rod (204) is detachably connected to an adjusting rod (205), and the supporting slide (207) is connected to the lower end of the adjusting rod (205).

3. The weeding device with automatic tensioning transmission based on adaptive ground adjustment as claimed in claim 2, characterized in that: The lower part of the connecting rod (204) is provided with a plurality of adjustment holes spaced apart in the height direction, and the adjustment rod (205) is provided with a plurality of fixing holes coaxial with the adjustment holes.

4. The weeding device with automatic tensioning transmission based on adaptive ground adjustment as claimed in claim 2, characterized in that: A hinged ear (207b) is fixed to the upper end of the support slide (207), and the support slide (207) is hinged to the lower end of the adjustment rod (205) via the hinged ear (207b). The rear end of the adjustment rod (205) is connected to a compression spring (206), and the rear end of the compression spring (206) is hinged to the upper end of the rear part of the support slide (207).

5. The weeding device according to any one of claims 1 to 4, characterized in that: An upper transmission disc (218) is fixedly connected to the outer side of the guide housing (102); an upper sliding groove (218a) is formed at one end of the upper transmission disc (218) away from the transmission box (201); an upper rotating disc (216) is connected to the first rotating shaft (211b) extending out of the guide housing (102); a curved first rotating groove (216a) is formed on the upper rotating disc (216); and the upper transmission disc (218) is moved along the upper sliding groove (218a). ) is slidably connected with an upper sliding rod (219), and an upper sliding column (217) is fixed to one end of the upper sliding rod (219) relative to the upper rotating disk (216) and just extends into the first rotating groove (216a). The upper end of the upper sliding rod (219) is fixedly connected to the outside of the transmission box (201). When the transmission box (201) moves upward, the upper rotating disk (216) drives the upper swing plate (211a) to swing upward under the action of the upper sliding column (217).

6. The weeding device with automatic tensioning transmission based on adaptive ground adjustment as claimed in claim 5, characterized in that: A lower transmission disc (212) is fixedly connected to the outer side of the guide housing (102); a lower sliding groove (212a) is formed at one end of the lower transmission disc (212) away from the transmission box (201); a lower rotating disc (213) is connected below the first rotating shaft (211b) extending outside the guide housing (102); a curved second rotating groove (213a) is formed below the lower rotating disc (213); and the lower transmission disc (212) is moved along the lower sliding groove (212a) to rotate. ) is slidably connected with a lower sliding rod (214), and a lower sliding column (215) is fixed to one end of the lower sliding rod (214) relative to the lower rotating disk (213) and just extends into the second rotating groove (213a). The lower end of the lower sliding rod (214) is fixedly connected to the outside of the transmission box (201). When the transmission box (201) moves upward, the lower rotating disk (213) drives the lower swing plate (211e) to swing upward under the action of the lower sliding column (215).

7. The weeding device with automatic tensioning transmission based on adaptive ground adjustment according to any one of claims 1 to 4, characterized in that: The front and rear ends of the inner side of the guide housing (102) are rotatably connected to a plurality of rollers, and the front and rear sides of the transmission box (201) are respectively tightly attached to the rollers.

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