Weeding device capable of enabling hoe arm blade to rebound when encountering resistance

Abstract

The invention relates to the technical field of weeding machines, in particular to a weeding device with hoe arm blades rebounding when encountering resistance, which comprises a vehicle body, a lifting platform, a weeding base, a hoe arm distance adjusting device, a magnetic sliding seat, a weeding arm, an elastic arm rod, a sleeve rod, a clamping shaft, a trigger block and a cleaning device. According to the hoeing device, the hoeing arms are prevented from being blocked through the elastic arm rod which is elastically positioned, so that the problems that a blade is abraded and the service life of the device is affected due to the fact that the blade collides with stones are solved, and the distance of the hoeing arms on the magnetic sliding seat is adjusted by combining non-contact transmission of magnetic force of the hoeing arm distance adjusting device; therefore, the effect of adjusting the blades of the hoeing arms in a non-contact mode is achieved, the problem that outside weed chippings and stone particles are clamped into the threaded sliding grooves can be avoided, meanwhile, the distance between the hoeing arms can be adjusted, meanwhile, the positions of the cleaning device and the elastic arm rod can be adjusted according to the corresponding hoeing arms, and the hoeing efficiency is improved. And cleaning and anti-collision work can be adaptively carried out on the weeding arms at different positions.

Description

Technical Field

[0001] The invention relates to the technical field of weeders, in particular to a weeding device with a hoe arm blade that rebounds when encountering resistance. Background Art

[0002] A lawn mower is also called a lawn mower, lawn trimmer, lawn trimmer, etc. A lawn mower is a mechanical tool used to trim lawns, vegetation, etc. Weeds will compete with planted plants for resources such as nutrients, water and light, affecting the normal growth of plants. Regular use of a lawn mower to remove weeds can reduce this harmful competition and provide a better growth environment for plants.

[0003] When encountering hard soil and small stones, the existing weeding devices cannot adjust the weeder blades to avoid the hard soil and small stones, which will cause the blades to hit the stones, causing the blades to wear and affecting the life of the device; at the same time, users need to clean weeds in different positions according to the production stages and spacings of different crops, which leads to the need to adjust the spacing of the blades. Traditional adjustment methods have the problem of weeds getting stuck. For example, a lightweight re-seeding cotton inter-row weeding machine disclosed in application number CN202411169485.7 adopts a screw adjustment method to achieve blade spacing adjustment. During use, weed debris and stone particles are stuck in the wire pattern and affect blade adjustment. In addition, the existing weeding devices generally only perform simple weeding work. After working for a long time, there will be a problem of a large amount of weeds accumulating in front of the hoe arm blade, which will increase the resistance of the hoe arm weeding. In view of this, we propose a weeding device with a hoe arm blade that rebounds when encountering resistance. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a weeding device in which the blade of a hoe arm rebounds upon encountering resistance, thereby solving the problems raised in the above background technology. To achieve the above purpose, the present invention is implemented through the following technical solutions.

[0005] A weeding device with a hoe arm blade that rebounds when encountering resistance, comprising a vehicle body, a lifting platform installed at the bottom of the vehicle body, and a weeding base installed at the bottom of the lifting platform; a hoe arm spacing adjustment device, the hoe arm spacing adjustment device is arranged on the weeding base, and a magnetic slide is arranged on the hoe arm spacing adjustment device, the bottom of the magnetic slide is elastically connected to the weeding arm through a torsion spring, the weeding arm is slidably connected to an elastic arm rod, the end of the elastic arm rod away from the weeding arm is elastically connected to a sleeve rod through a spring, the sleeve rod is slidably connected to a clamping shaft, the interior of the sleeve rod is elastically connected to a trigger block through an resistance spring, and the trigger block is plugged into the elastic arm rod; a cleaning device, the cleaning device is arranged on the magnetic slide and is used for cleaning accumulated weeds.

[0006] Preferably, a blade is fixedly connected to the bottom of the weeding arm, the surface of the elastic arm rod is slidably connected to the inner wall of the sleeve rod, and both ends of the clamping shaft are respectively fixedly connected to the weeding base.

[0007] Preferably, the hoe arm spacing adjustment device includes a sliding sleeve, both ends of the sliding sleeve are fixedly connected to the weeding base, an adjusting motor is installed at one end of the sliding sleeve, the output shaft of the adjusting motor is clamped with a cam variable pitch slide, and the surface of the cam variable pitch slide is threadedly connected with a magnetic block.

[0008] Preferably, the magnetic slide is slidably connected to the sleeve, the two ends of the cam variable pitch slide are respectively rotatably connected inside the sleeve, the surface of the magnetic block is slidably connected to the inner wall of the sleeve, and the surface of the magnetic block is magnetically connected to the inner wall of the magnetic slide.

[0009] Preferably, the cleaning device includes a fixed air pipe and a lifting device, the surface of the fixed air pipe is fixedly connected to the interior of the magnetic slide seat, the surface piston of the fixed air pipe is connected to a sealing sleeve, and the surface of the fixed air pipe is fixedly connected to the bottom of the sealing sleeve through a spring, the surface of the sealing sleeve is fixedly connected to a lifting seat, a sweeping device is provided inside the lifting seat, and one side of the lifting seat is rotatably connected to a cleaning shaft plate.

[0010] Preferably, the lifting device includes a connecting seat and a lifting motor, the surface of the connecting seat is fixedly connected to the surface of the magnetic sliding seat, the internal piston of the connecting seat is connected to a pneumatic plate, an extrusion rod is fixedly connected to the pneumatic plate, a total pressing plate is slidably connected to the extrusion rod, and the output shaft of the lifting motor is clamped with a drive disk.

[0011] Preferably, the end of the lifting motor is installed on the weeding base, the driving disk is slidably connected to the top of the main pressing plate through an eccentric shaft, the surface of the connecting seat is fixedly connected to the end of the fixed air pipe, and the interior of the connecting seat is connected to the interior of the sealing sleeve through the fixed air pipe.

[0012] Preferably, the sweeping device includes a transmission gear shaft and a sweeping motor, the end of the transmission gear shaft is rotatably connected to the inside of the lifting seat, the output shaft of the sweeping motor is clamped with a rotating disk, the rotating disk is slidably connected to the main lifting plate through an eccentric rod, and the inside of the main lifting plate is slidably connected to a one-way gear seat.

[0013] Preferably, the surface of the transmission gear shaft is transmission-connected to the end of the cleaning shaft plate through a conveyor belt, the end of the sweeping motor is installed on the weeding base, the surface of the one-way gear seat is slidingly connected to the inside of the lifting seat, and the one-way gear seat is used to drive the transmission gear shaft to rotate in one direction.

[0014] Preferably, a limiting slot is provided inside the one-way gear seat, the inside of the limiting slot is elastically connected with a one-way tooth via a torsion spring, and a protrusion is provided on the one-way tooth.

[0015] It can be seen from the above technical solutions that the weeding device with a hoe arm blade that rebounds when encountering resistance provided in the embodiments of this specification has at least the following beneficial effects:

[0016] 1. The present invention uses an elastically positioned elastic arm rod to protect the weeding arm from obstacles, thereby preventing the blade from hitting stones, causing blade wear and affecting the life of the device. Combined with the contactless transmission of the magnetic force of the weeding arm spacing adjustment device, the spacing adjustment of the weeding arm on the magnetic slide is completed, thereby achieving the effect of a new type of contactless adjustment of the weeding arm blade, which can avoid the problem of external weed debris and stone particles being stuck in the threaded groove. At the same time, while satisfying the spacing adjustment of each weeding arm, the cleaning device and the elastic arm rod can be adjusted in position according to the corresponding weeding arm, thereby achieving adaptive cleaning and collision prevention work for weeding arms in different positions.

[0017] 2. The present invention sets a hoe arm spacing adjustment device, and uses multiple threads with different pitches on the cam pitch-changing slide to adjust the pitch of multiple magnetic blocks. The magnetic blocks use magnetic force to drive the magnetic slide on the sleeve to adjust the position. The threaded groove on the cam pitch-changing slide is closed by the setting of the sleeve, and the contactless transmission of the magnetic force is combined to complete the spacing adjustment of the weeding arms on the magnetic slide, thereby achieving the effect of a new contactless adjustment of the hoe arm blade, which can avoid the problem of external weed debris and stone particles getting stuck in the threaded groove.

[0018] 3. The present invention drives the sealing sleeve to break through the positioning effect of the spring elastic force on the fixed air pipe through the air pressure generated by the lifting device and move downward. The downward-moving sealing sleeve drives the lifting seat to move downward as a whole, and then controls the cleaning shaft plate to rotate unidirectionally through the sweeping device, so as to achieve the effect of automatically cleaning the weeds accumulated at the bottom end of the weeding arm. At the same time, through the symmetrically arranged cleaning shaft plates, the effect of symmetrical rotation of the two groups of cleaning shaft plates is achieved, that is, when the cleaning shaft plate on one side of the center line of the cam variable pitch slide rotates counterclockwise, the cleaning shaft plate on the other side of the center line of the cam variable pitch slide rotates clockwise, thereby achieving the purpose of cleaning the weeds accumulated at the bottom of the weeding arm from the central area to the two side areas, and further improving the weed cleaning effect.

[0019] 4. The present invention achieves the effect of unidirectional rotation of the transmission gear shaft by setting a limit slot and a one-way tooth with a protrusion, and further realizes the unidirectional rotation of the cleaning shaft plate, thereby meeting the purpose of cleaning the weeds accumulated at the bottom of the weeding arm from the central area to the two side areas, and further avoids the problem of weed accumulation and blockage at the weeding arm blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the lifting platform in the present invention;

[0023] Figure 3 It is a schematic diagram of the internal structure of the sleeve rod in the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the trigger block in the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the sliding sleeve in the present invention;

[0026] Figure 6 It is a structural schematic diagram of the cam variable pitch slide in the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the lifting device in the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the fixed trachea in the present invention;

[0029] Fig. 9 It is a structural schematic diagram of the driving disk in the present invention;

[0030] Fig.10 It is a schematic diagram of the structure inside the lifting seat in the present invention;

[0031] Fig.11 It is a structural schematic diagram of the rotating disk in the present invention;

[0032] Fig.12 It is a schematic diagram of the one-way gear holder structure in the present invention;

[0033] Fig.13 It is a schematic diagram of the structure of the limit slot in the present invention;

[0034] Fig.14 This is a schematic diagram of the structure of the cleaning shaft plate in the present invention;

[0035] Fig.15 It is a schematic diagram of the ball structure in the magnetic moving block of the present invention.

[0036] In the figure: 1 vehicle body, 2 lifting platform, 3 weeding base, 4 hoe arm spacing adjustment device, 41 sliding sleeve, 42 adjusting motor, 43 cam variable pitch slide, 44 magnetic block, 5 magnetic slide seat, 6 weeding arm, 7 elastic arm rod, 8 sleeve rod, 9 clamping shaft, 10 resistance spring, 11 trigger block, 12 cleaning device, 121 fixed air pipe, 122 sealing sleeve, 123 lifting seat, 124 cleaning shaft plate, 13 sweeping device, 131 transmission gear shaft, 132 sweeping motor, 133 rotating disk, 134 eccentric rod, 135 total lifting plate, 136 one-way gear seat, 1361 limit slot, 1362 one-way teeth, 14 lifting device, 141 connecting seat, 142 air pressure plate, 143 extrusion rod, 144 total pressing plate, 145 lifting motor, 146 driving disk, 147 eccentric shaft. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Reference Figures 1 to 15As shown, a weeding device with a hoe arm blade that rebounds when encountering resistance comprises a vehicle body 1, a lifting platform 2 is installed at the bottom of the vehicle body 1, a weeding base 3 is installed at the bottom of the lifting platform 2; a hoe arm spacing adjustment device 4, the hoe arm spacing adjustment device 4 is arranged on the weeding base 3, a magnetic slide seat 5 is arranged on the hoe arm spacing adjustment device 4, the bottom of the magnetic slide seat 5 is elastically connected to a weeding arm 6 through a torsion spring, the bottom of the weeding arm 6 is fixedly connected to a blade, the lifting platform 2 adopts a cylinder or an electric push rod to adjust the height of the weeding base 3 as a whole, and when not in working state, the lifting platform 2 controls the weeding base 3 to be in a high fixed position The blade at the bottom of the weeding arm 6 does not touch the ground. When in working state, the lifting platform 2 controls the weeding base 3 to be positioned in a low position, and the blade at the bottom of the weeding arm 6 touches the ground. The normal driving of the vehicle body 1 is utilized to realize the weeding arm 6 to clear the weeds. Grooves are provided on both sides of the weeding arm 6, and elastic arm rods 7 are slidably connected in the grooves. The end of the elastic arm rod 7 away from the weeding arm 6 is elastically connected to a sleeve rod 8 through a spring. The elastic arm rod 7 can perform telescopic movement in the sleeve rod 8, and the surface of the elastic arm rod 7 is slidably connected to the inner wall of the sleeve rod 8. A card shaft 9 is slidably connected to the sleeve rod 8, and the two ends of the card shaft 9 are respectively fixedly connected to the weeding arm 6. On the base 3, the interior of the sleeve rod 8 is elastically connected with a trigger block 11 through an encounter spring 10, and the trigger block 11 performs limited sliding in the sleeve rod 8. The trigger block 11 is plugged into the elastic arm rod 7, and the side of the trigger block 11 close to the weeding arm 6 is set as an inclined surface. The trigger block 11 is used to elastically position the elastic arm rod 7. When the elastic arm rod 7 is subjected to greater resistance, the encounter spring 10 and the inclined surface on the trigger block 11 can make it elastically give way. The force required for the trigger block 11 to give way is set to Y, and when weeding is performed under normal circumstances, the resistance to weeding is set to X, and X is less than Y, so when the weeding arm 6 is During normal weeding, the weeding arm 6 is in a stable position to work. When the weeding arm 6 encounters hard particles or small stones during weeding, the resistance it encounters will be greater than or equal to Y, and the trigger block 11 will give way and rebound. At this time, the weeding arm 6 is elastically tilted by the hard particles or small stones, and the distance between the elastic arm rod 7 and the sleeve rod 8 is reduced. The weeding arm 6 as a whole can achieve the effect of rebounding when encountering resistance, thereby avoiding the blade hitting the stone, causing blade wear and affecting the life of the device; the cleaning device 12, the cleaning device 12 is arranged on the magnetic slide seat 5, and is used to clean the accumulated weeds.

[0039] In this embodiment, the hoe arm spacing adjustment device 4 includes a sleeve 41, both ends of the sleeve 41 are fixedly connected to the weeding base 3, one end of the sleeve 41 is installed with an adjusting motor 42, the output shaft of the adjusting motor 42 is clamped with a cam pitch-changing slide 43, both ends of the cam pitch-changing slide 43 are respectively rotatably connected inside the sleeve 41, the surface of the cam pitch-changing slide 43 is threadedly connected with a magnetic block 44, the cam pitch-changing slide 43 is provided with a plurality of threads with different pitches, each thread drives a work station to move, and a ball is provided inside each magnetic block 44, and the ball works separately in each thread. When the cam pitch-changing slide 43 rotates, all work stations will move at the same time, and the moving distance of each work station is different. The technology of controlling the pitch change of the cam pitch-changing slide 43 is an existing technology, which is used to realize the pitch adjustment of multiple magnetic blocks 44, the surface of the magnetic block 44 is slidably connected to the inner wall of the sleeve 41, and the limitation of the inner wall groove of the sleeve 41 makes each magnetic block 44 can only The magnetic sliding seat 5 is provided with a magnet between the surface of the magnetic moving block 44 and the inner wall of the magnetic sliding seat 5, and the magnetic transmission function is realized by the magnet. The number and position of the magnetic moving block 44 correspond to the number and position of the magnetic sliding seat 5. When the output shaft of the adjusting motor 42 drives the magnetic moving block 44 on the cam pitch-changing sliding table 43 to move, the magnetic moving block 44 uses magnetic force to drive the magnetic sliding seat 5 on the sliding sleeve 41 to adjust the position. The threaded groove on the cam pitch-changing sliding table 43 is closed by the setting of the sliding sleeve 41, and the contactless transmission of the magnetic force is combined to complete the spacing adjustment of the weeding arm 6 on the magnetic sliding seat 5, thereby achieving the effect of a new contactless adjustment of the weeding arm blade, which can avoid the problem of external weed debris and stone particles being stuck in the threaded groove. The magnetic sliding seat 5 is slidably connected to the sliding sleeve 41, and the square setting of the sliding sleeve 41 further realizes the limitation of the magnetic sliding seat 5, so that it can only move in a straight line.

[0040] Furthermore, the cleaning device 12 includes a fixed air pipe 121 and a lifting device 14, the surface of the fixed air pipe 121 is fixedly connected to the inside of the magnetic sliding seat 5, the surface piston of the fixed air pipe 121 is connected to a sealing sleeve 122, and the surface of the fixed air pipe 121 is fixedly connected to the bottom of the inside of the sealing sleeve 122 through a spring. The spring on the fixed air pipe 121 under normal conditions is used to position the sealing sleeve 122. When the sealing sleeve 122 is compressed, it can also move downward by utilizing the deformability of the spring, and after the compression ends, the spring at this location can also utilize elastic force to achieve the resetting of the sealing sleeve 122. The surface of the sealing sleeve 122 is fixedly connected to a lifting seat 123, and a sweeping device 13 is arranged inside the lifting seat 123. A cleaning shaft plate 124 is rotatably connected to one side of the lifting seat 123, and the cleaning shaft plate 124 is in a high position when not in operation. When it is necessary to clean the weeds in front of the blade at the bottom of the weeding arm 6, the lifting device 14 and the sweeping device 13 are started in sequence, and the lifting device 14 is used to The sealing sleeve 122 is driven by air pressure to break through the positioning effect of the spring elastic force on the fixed air pipe 121 and move downward. The sealing sleeve 122 moving downward drives the lifting seat 123 to move downward as a whole. At this time, the cleaning shaft plate 124 is aligned with the front area of ​​the blade at the bottom of the weeding arm 6. The cleaning shaft plate 124 is controlled by the sweeping device 13 to rotate unidirectionally, so as to achieve the effect of automatically cleaning the weeds accumulated at the bottom end of the weeding arm 6. At the same time, the sealing sleeve 122, the lifting seat 123 and the cleaning shaft plate 124 are all provided in plurality, and they are all symmetrically distributed with the center line of the cam pitch-changing slide 43 as the symmetry axis. Correspondingly, the symmetrically distributed cleaning shaft plates 124 also perform symmetrical unidirectional rotation. When the cleaning shaft plate 124 on one side of the center line of the cam pitch-changing slide 43 rotates counterclockwise, the cleaning shaft plate 124 on the other side of the center line of the cam pitch-changing slide 43 rotates clockwise, thereby achieving the purpose of cleaning the weeds accumulated at the bottom of the weeding arm 6 from the central area to the two side areas, further improving the weed cleaning effect.

[0041] There are multiple sealing sleeves 122, lifting seats 123 and cleaning shaft plates 124, and they are symmetrically distributed with the center line of the cam variable pitch slide 43 as the symmetry axis. Correspondingly, the symmetrically distributed cleaning shaft plates 124 also rotate symmetrically, that is, when the cleaning shaft plate 124 on one side of the center line of the cam variable pitch slide 43 rotates counterclockwise, the cleaning shaft plate 124 on the other side of the center line of the cam variable pitch slide 43 rotates clockwise, thereby achieving the purpose of cleaning the weeds accumulated at the bottom of the weeding arm 6 from the central area to the two side areas, further improving the weed cleaning effect.

[0042] Furthermore, the lifting device 14 includes a connecting seat 141 and a lifting motor 145. The surface of the connecting seat 141 is fixedly connected to the surface of the magnetic sliding seat 5. The surface of the connecting seat 141 is fixedly connected to the end of the fixed air pipe 121, and the interior of the connecting seat 141 is connected to the interior of the sealing sleeve 122 through the fixed air pipe 121. The end of the lifting motor 145 is installed on the weeding base 3. The internal piston of the connecting seat 141 is connected to the air pressure plate 142. The interior of the connecting seat 141 is located on the side of the air pressure plate 142 close to the fixed air pipe 121 and is in a sealed state. When the air pressure plate 142 moves and squeezes toward the fixed air pipe 121, the constant gas in the sealed cavity is squeezed into the fixed air pipe 121 and transmitted to the inside of the sealing sleeve 122 through the fixed air pipe 121. The air pressure plate 142 is fixedly connected with an extrusion rod 143, and the extrusion rod 143 is slidably connected with a total pressing plate 144, and the surface of the extrusion rod 143 is slidably connected to one side of the connecting seat 141. The output shaft of the lifting motor 145 is clamped with a driving disk 146, and the driving disk 146 slides with the top of the total pressing plate 144 through the eccentric shaft 147. The main pressing plate 144 is provided so that the plurality of squeezing rods 143 can be driven by the main pressing plate 144 while adjusting their positions along with the weeding arm 6. Before the lifting motor 145 is started, the cleaning shaft plate 124 is in a high position. When the lifting motor 145 is working, the output shaft of the lifting motor 145 drives the main pressing plate 144 to move horizontally through the eccentric shaft 147 on the driving disk 146. When the main pressing plate 144 moves toward the connecting seat 141, it drives the air pressure plate 142 on the squeezing rod 143 to move synchronously. The air pressure plate 142 is in a When the connecting seat 141 moves inside, gas is squeezed, and the squeezed gas is transported to the inside of the sealing sleeve 122 through the fixed air pipe 121. Since the gas is squeezed hard, the air pressure can drive the sealing sleeve 122 to break through the positioning effect of the spring elastic force on the fixed air pipe 121 and move downward. The downward sealing sleeve 122 drives the lifting seat 123 to move downward as a whole. At this time, the cleaning shaft plate 124 is aligned with the front area of ​​the blade at the bottom of the weeding arm 6. When the cleaning shaft plate 124 is driven, the weeds in the front area of ​​the blade at the bottom of the weeding arm 6 can be cleaned.

[0043] In addition, the sweeping device 13 includes a transmission gear shaft 131 and a sweeping motor 132. The end of the sweeping motor 132 is installed on the weeding base 3. The end of the transmission gear shaft 131 is rotatably connected to the inside of the lifting seat 123. The surface of the transmission gear shaft 131 is transmission-connected to the end of the cleaning shaft plate 124 through a conveyor belt. The transmission gear shaft 131 and the cleaning shaft plate 124 are both provided with transmission wheels for satisfying the transmission of the cleaning shaft plate 124. At the same time, because the transmission method is not rigid, when the cleaning shaft plate 124 encounters hard particles or The output shaft of the sweeping motor 132 is clamped with a rotating disk 133, and the rotating disk 133 is slidably connected to a total lifting plate 135 through an eccentric rod 134. The interior of the total lifting plate 135 is slidably connected with a one-way gear seat 136, and the surface of the one-way gear seat 136 is slidably connected to the interior of the lifting seat 123, and the one-way gear seat 136 is used to drive the transmission gear shaft 131 to rotate in one direction. After the downward movement, the transmission gear shaft 131 inside the lifting seat 123 is flush with the one-way teeth 1362 on the one-way gear seat 136. At this time, the cleaning shaft plate 124 is also aligned with the front area of ​​the blade at the bottom of the weeding arm 6. The lifting motor 145 controls the lifting seat 123 to be positioned at the lowest point as a whole. At this time, the sweeping motor 132 is started, and the output shaft of the sweeping motor 132 drives the total lifting plate 135 to move vertically back and forth through the eccentric rod 134 on the rotating disk 133. During the vertical reciprocating movement of the total lifting plate 135, the one-way gear seat 136 is driven to move synchronously. During the movement of the one-way gear seat 136, the one-way meshing drives the transmission gear shaft 131 to rotate. While the transmission gear shaft 131 is rotating unidirectionally, the cleaning shaft plate 124 is driven unidirectionally by the conveyor belt. During the unidirectional rotation, the cleaning shaft plate 124 can achieve the effect of cleaning the weeds accumulated at the bottom of the weeding arm 6.

[0044] In addition, a limit slot 1361 is provided inside the one-way gear seat 136, and the inside of the limit slot 1361 is elastically connected with a one-way tooth 1362 through a torsion spring, and a protrusion is provided on the one-way tooth 1362. By providing the limit slot 1361 and the one-way tooth 1362 with the protrusion, the one-way tooth 1362 can utilize the effect of engaging with the limit slot 1361 to mesh and drive the transmission gear shaft 131 to rotate counterclockwise when moving downward, and the one-way tooth 1362 can make way and rotate in the limit slot 1361 when moving upward. After the tooth 1362 contacts the transmission gear shaft 131, the one-way tooth 1362 can automatically give way, thereby not driving the transmission gear shaft 131 to rotate. At the same time, after giving way and rotating, the one-way tooth 1362 can use the torsion spring thereon to achieve movement reset, thereby facilitating the one-way tooth 1362 to drive the transmission gear shaft 131 to rotate when moving downward. Similarly, the cleaning shaft plate 124 can only rotate counterclockwise in one direction, thereby meeting the purpose of cleaning the weeds accumulated at the bottom of the weeding arm 6 from the central area to the two side areas, thereby further avoiding the problem of weed accumulation and blockage at the blade of the weeding arm 6.

[0045] When the weeding device of the present invention is used, the lifting platform 2 adopts a cylinder or an electric push rod to adjust the height of the weeding base 3 as a whole. When it is not in working state, the lifting platform 2 controls the weeding base 3 to be positioned in a high position, and the blade at the bottom of the weeding arm 6 does not touch the ground. When it is in working state, the lifting platform 2 controls the weeding base 3 to be positioned in a low position, and the blade at the bottom of the weeding arm 6 touches the ground. The weeding arm 6 clears the weeds by utilizing the normal driving of the vehicle body 1. When the weeding arm 6 encounters hard particles or small stones during weeding, its bottom end will be subject to greater resistance. The weed resistance encountered during weeding is set to X. When it encounters resistance from hard particles or small stones, the weed resistance encountered during weeding is X. The force is Y, Y is greater than X, at this time the weeding arm 6 will exert force on the elastic arm rod 7, and the trigger block 11 positioned by the resistance spring 10 in the sleeve rod 8 will rebound after being subjected to pressure, the weeding arm 6 is elastically tilted by the hard particles or small stones, the distance between the elastic arm rod 7 and the sleeve rod 8 is reduced, and the weeding arm 6 as a whole can achieve the effect of rebounding when encountering resistance, thereby avoiding the problem of the blade hitting the stone, causing the blade to wear and affecting the life of the device. When the vehicle body 1 continues to move, the weeding arm 6 is away from the hard particles or small stones, and the sleeve rod 8 promotes the resetting of the elastic arm rod 7 through the internal spring, and the weeding arm 6 is reset by the elastic force, and then continues to weed.During weeding, the lifting motor 145 and the sweeping motor 132 are started in sequence. Before the lifting motor 145 is started, the cleaning shaft plate 124 is in a high position. When the lifting motor 145 is working, the output shaft of the lifting motor 145 drives the total pressing plate 144 to move horizontally through the eccentric shaft 147 on the driving disk 146. When the total pressing plate 144 moves toward the connecting seat 141, it drives the air pressure plate 142 on the squeezing rod 143 to move synchronously. When the air pressure plate 142 moves in the connecting seat 141, gas is squeezed. The squeezed gas is transported to the inside of the sealing sleeve 122 through the fixed air pipe 121. Since the gas is squeezed hard, the air pressure can drive The sealing sleeve 122 breaks through the positioning effect of the spring elastic force on the fixed air pipe 121 and moves downward. The sealing sleeve 122 moves downward and drives the lifting seat 123 to move downward as a whole. After the downward movement, the transmission gear shaft 131 inside the lifting seat 123 is flush with the one-way teeth 1362 on the one-way gear seat 136. At this time, the cleaning shaft plate 124 is also aligned with the front area of ​​the blade at the bottom of the weeding arm 6. The lifting motor 145 controls the lifting seat 123 to be positioned at the lowest point as a whole. At this time, the sweeping motor 132 is started. The output shaft of the sweeping motor 132 drives the total lifting plate 135 to move vertically reciprocatingly through the eccentric rod 134 on the rotating disk 133. The total lifting plate 135 moves vertically During the reciprocating movement, the one-way gear holder 136 is driven to move synchronously. During the movement of the one-way gear holder 136, the one-way meshing drives the transmission gear shaft 131 to rotate. While the transmission gear shaft 131 is rotating in one direction, the cleaning shaft plate 124 is driven by the conveyor belt to rotate in one direction. During the one-way rotation, the cleaning shaft plate 124 can achieve the effect of cleaning the weeds accumulated at the bottom end of the weeding arm 6. By setting the limiting card slot 1361 and the one-way tooth 1362 with a protrusion, the one-way tooth 1362 can utilize the effect of the engagement with the limiting card slot 1361 to mesh and drive the transmission gear shaft 131 to rotate counterclockwise when moving downward, and the one-way tooth 1362 can The one-way tooth 1362 can make way and rotate in the limit slot 1361. When the one-way tooth 1362 contacts the transmission gear shaft 131 during the upward period, the one-way tooth 1362 can automatically make way, thereby not driving the transmission gear shaft 131 to rotate. At the same time, the one-way tooth 1362 can use the torsion spring thereon to achieve movement reset after making way and then drive the transmission gear shaft 131 to rotate when the one-way tooth 1362 moves downward. Similarly, the cleaning shaft plate 124 can only rotate counterclockwise in one direction, thereby meeting the purpose of cleaning the weeds accumulated at the bottom of the weeding arm 6 from the central area to the two side areas, and further avoiding the problem of weed accumulation and blockage at the blade of the weeding arm 6.There are multiple sealing sleeves 122, lifting seats 123 and cleaning shaft plates 124, and they are symmetrically distributed with the center line of the cam variable pitch slide 43 as the symmetry axis. Correspondingly, the symmetrically distributed cleaning shaft plates 124 also perform symmetrical unidirectional rotation. When the cleaning shaft plate 124 on one side of the center line of the cam variable pitch slide 43 rotates counterclockwise, the cleaning shaft plate 124 on the other side of the center line of the cam variable pitch slide 43 rotates clockwise, thereby achieving the purpose of cleaning the weeds accumulated at the bottom of the weeding arm 6 from the central area to the two side areas, further improving the weed cleaning effect.

[0046] In addition, the operator can clean weeds at different positions according to the production stages and spacings of different crops by starting the adjustment motor 42. The output shaft of the adjustment motor 42 drives the magnetic block 44 on the cam pitch-changing slide 43 to move. The magnetic block 44 uses magnetic force to drive the magnetic slide seat 5 on the sleeve 41 to adjust the position. The cam pitch-changing slide 43 is provided with a plurality of threads with different pitches. Each thread drives a work station to move, and each magnetic block 44 is provided with a ball inside. The ball works separately in each thread. When the cam pitch-changing slide 43 rotates, all work stations will move at the same time, and The moving distance of each workstation is different. The threaded groove on the cam variable pitch slide 43 is closed by setting the sliding sleeve 41, and the spacing adjustment of the weeding arm 6 on the magnetic slide 5 is completed by combining the contactless transmission of magnetic force, thereby achieving the effect of a new contactless adjustment of the weeding arm blade, which can avoid the problem of external weed debris and stone particles being stuck in the threaded groove. At the same time, while satisfying the spacing adjustment of each weeding arm 6, the cleaning shaft plate 124 and the elastic arm rod 7 can be adjusted according to the corresponding weeding arm 6, so as to achieve adaptive cleaning and anti-collision work for the weeding arms 6 in different positions.

[0047] The above implementation methods are only used to illustrate the embodiments of the present invention, and are not limitations of the embodiments of the present invention. Ordinary technicians in the relevant technical field may make various changes and modifications without departing from the spirit and scope of the embodiments of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the embodiments of the present invention. The patent protection scope of the embodiments of the present invention should be defined by the claims.

Claims

1. A weeding device with a hoe arm blade that rebounds when encountering resistance, characterized in that: include A vehicle body (1), a lifting platform (2) is installed at the bottom of the vehicle body (1), and a weeding base (3) is installed at the bottom of the lifting platform (2); A hoe arm spacing adjustment device (4), the hoe arm spacing adjustment device (4) is arranged on a weeding base (3), a magnetic slide seat (5) is arranged on the hoe arm spacing adjustment device (4), the bottom of the magnetic slide seat (5) is elastically connected to a weeding arm (6) via a torsion spring, an elastic arm rod (7) is slidably connected to the weeding arm (6), one end of the elastic arm rod (7) away from the weeding arm (6) is elastically connected to a sleeve rod (8) via a spring, a clamping shaft (9) is slidably connected to the sleeve rod (8), the interior of the sleeve rod (8) is elastically connected to a trigger block (11) via a resistance spring (10), and the trigger block (11) is plugged into the elastic arm rod (7); A cleaning device (12) is arranged on the magnetic slide seat (5) and is used for cleaning the accumulated weeds.

2. A weeding device with a hoe arm blade that rebounds when encountering resistance according to claim 1, characterized in that: A blade is fixedly connected to the bottom of the weeding arm (6), the surface of the elastic arm rod (7) is slidably connected to the inner wall of the sleeve rod (8), and the two ends of the clamping shaft (9) are respectively fixedly connected to the weeding base (3).

3. A weeding device with a hoe arm blade that rebounds when encountering resistance according to claim 1, characterized in that: The hoe arm spacing adjustment device (4) comprises a sliding sleeve (41), both ends of which are fixedly connected to the weeding base (3), an adjustment motor (42) is installed at one end of the sliding sleeve (41), the output shaft of the adjustment motor (42) is clamped with a cam pitch-changing slide (43), and the surface of the cam pitch-changing slide (43) is threadedly connected with a magnetic moving block (44).

4. A weeding device with a hoe arm blade that rebounds when encountering resistance according to claim 3, characterized in that: The magnetic slide seat (5) is slidably connected to the slide sleeve (41), the two ends of the cam variable pitch slide table (43) are respectively rotatably connected inside the slide sleeve (41), the surface of the magnetic moving block (44) is slidably connected to the inner wall of the slide sleeve (41), and the surface of the magnetic moving block (44) is magnetically connected to the inner wall of the magnetic slide seat (5).

5. A weeding device with a hoe arm blade that rebounds when encountering resistance according to claim 1, characterized in that: The cleaning device (12) comprises a fixed air pipe (121) and a lifting device (14); the surface of the fixed air pipe (121) is fixedly connected to the inside of the magnetic sliding seat (5); the surface piston of the fixed air pipe (121) is connected to a sealing sleeve (122); the surface of the fixed air pipe (121) is fixedly connected to the bottom of the sealing sleeve (122) via a spring; the surface of the sealing sleeve (122) is fixedly connected to a lifting seat (123); a sweeping device (13) is arranged inside the lifting seat (123); and one side of the lifting seat (123) is rotatably connected to a cleaning shaft plate (124).

6. A weeding device with a hoe arm blade that rebounds when encountering resistance according to claim 5, characterized in that: The lifting device (14) comprises a connecting seat (141) and a lifting motor (145); the surface of the connecting seat (141) is fixedly connected to the surface of the magnetic sliding seat (5); the internal piston of the connecting seat (141) is connected to a gas pressure plate (142); the gas pressure plate (142) is fixedly connected to a squeezing rod (143); the squeezing rod (143) is slidably connected to a total pressing plate (144); and the output shaft of the lifting motor (145) is clamped with a driving disk (146).

7. A weeding device with a hoe arm blade that rebounds when encountering resistance according to claim 6, characterized in that: The end of the lifting motor (145) is mounted on the weeding base (3), the driving disc (146) is slidably connected to the top of the main pressing plate (144) via an eccentric shaft (147), the surface of the connecting seat (141) is fixedly connected to the end of the fixed air pipe (121), and the interior of the connecting seat (141) is connected to the interior of the sealing sleeve (122) via the fixed air pipe (121).

8. A weeding device with a hoe arm blade that rebounds when encountering resistance according to claim 5, characterized in that: The sweeping device (13) comprises a transmission gear shaft (131) and a sweeping motor (132); the end of the transmission gear shaft (131) is rotatably connected to the inside of the lifting seat (123); the output shaft of the sweeping motor (132) is clamped with a rotating disk (133); the rotating disk (133) is slidably connected to a main lifting plate (135) via an eccentric rod (134); and the inside of the main lifting plate (135) is slidably connected to a one-way gear seat (136).

9. A weeding device with a hoe arm blade that rebounds when encountering resistance according to claim 8, characterized in that: The surface of the transmission gear shaft (131) is transmission-connected to the end of the cleaning shaft plate (124) via a conveyor belt, the end of the sweeping motor (132) is mounted on the weeding base (3), the surface of the one-way gear seat (136) is slidably connected to the inside of the lifting base (123), and the one-way gear seat (136) is used to drive the transmission gear shaft (131) to rotate in one direction.

10. A weeding device with a hoe arm blade that rebounds when encountering resistance according to claim 8, characterized in that: A limit slot (1361) is provided inside the one-way tooth seat (136), and the inside of the limit slot (1361) is elastically connected to a one-way tooth (1362) via a torsion spring, and a protrusion is provided on the one-way tooth (1362).

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