Weeding device with resiliently retractable hoe arm blades

Abstract

The present application relates to the technical field of weeding machines, in particular to a weeding device with a resiliently retractable blade on the digging arm, comprising a vehicle body, a lifting platform, a weeding base, an arm spacing adjustment device, a magnetic slide base, a weeding arm, a resilient arm rod, a sleeve rod, a clamping shaft, a trigger block and a cleaning device. The resilient arm rod is used to protect the weeding arm from obstacles, thereby avoiding the blade from hitting stones and causing wear and tear, which affects the service life of the device. The magnetic non-contact transmission of the arm spacing adjustment device is used to adjust the spacing of the weeding arm on the magnetic slide base, thereby achieving the effect of non-contact adjustment of the weeding arm blade. This can avoid the problem of foreign grass clippings, stones and particles getting stuck in the threaded sliding groove. At the same time, the cleaning device and the resilient arm rod can adjust the position according to the corresponding weeding arm, and adaptively clean and prevent the weeding arm at different positions from being hit.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of weeding machines, in particular to a weeding device with rebounding of a digging arm blade when encountering resistance. BACKGROUND

[0002] A weeding machine is also known as a mower, a grass trimmer, a lawn mower, etc. The weeding machine is a mechanical tool for trimming 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 weeding machine to remove weeds can reduce such harmful competition and provide a better growing environment for plants.

[0003] The existing weeding device cannot adjust the blade of the weeding machine when encountering hard ground and small stones, thereby avoiding hard ground and small stones. This will cause the blade to hit the stones, thereby causing the blade to wear out and affecting the service life of the device. At the same time, the user needs to clean weeds at different positions according to the production stage and spacing of different planted crops, which requires adjustment of the spacing of the blade. The traditional adjustment method has the problem of weeds being stuck, such as a light and multi-crop cotton intertillage weeding machine disclosed in application No. CN202411169485.7, which uses a lead screw adjustment method to adjust the spacing of the blade. During use, weeds and stone particles can be stuck in the lead screw, affecting the adjustment of the blade. In addition, the existing weeding device generally only performs simple weeding work. After a long period of work, a large amount of weeds will accumulate in front of the digging arm blade, thereby increasing the resistance of the digging arm to weeds. In view of this, the present application provides a weeding device with rebounding of a digging arm blade when encountering resistance. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a weeding device with rebounding of a digging arm blade when encountering resistance, which solves the problems raised in the background art. To achieve the above purpose, the present application realizes the following technical scheme.

[0005] A weeding device with rebounding of a digging arm blade 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 digging arm spacing adjustment device provided on the weeding base, a magnetic slide provided on the digging arm spacing adjustment device, a digging arm elastically connected to the bottom of the magnetic slide through a torsional spring, a spring arm rod slidingly connected to the digging arm, a sleeve rod elastically connected to the end of the spring arm rod away from the digging arm through a spring, a clamping shaft slidingly connected to the sleeve rod, a trigger block elastically connected to the inside of the sleeve rod through a resistance spring, and the trigger block inserted into the spring arm rod; a cleaning device provided on the magnetic slide for cleaning the accumulated weeds.

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

[0007] Preferably, the weeding arm spacing adjusting device comprises a sliding sleeve, the two ends of the sliding sleeve are fixedly connected to the weeding base, one end of the sliding sleeve is provided with an adjusting motor, the output shaft of the adjusting motor is connected with a cam variable-pitch sliding table, and the surface of the cam variable-pitch sliding table is threadedly connected with a magnetic moving block.

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

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

[0010] Preferably, the lifting device comprises a communication seat and a lifting motor, the surface of the communication seat is fixedly connected to the surface of the magnetic sliding seat, the inside of the communication seat is pistonically connected with an air pressure plate, the air pressure plate is fixedly connected with a pressing rod, the pressing rod is slidably connected with a total pressing plate, and the output shaft of the lifting motor is connected with a driving disc.

[0011] Preferably, the end of the lifting motor is mounted on the weeding base, the driving disc is slidably connected to the top of the total pressing plate through an eccentric shaft, the surface of the communication seat is fixedly connected to the end of the fixed air pipe, and the inside of the communication seat is communicated with the inside of the sealing sleeve through the fixed air pipe.

[0012] Preferably, the sweeping device comprises 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 connected with a rotating disc, the rotating disc is slidably connected with a total lifting plate through an eccentric rod, and the inside of the total lifting plate is slidably connected with a one-way tooth seat.

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

[0014] Preferably, the one-way tooth seat is internally provided with a limiting clamping groove, and the limiting clamping groove is elastically connected with a one-way tooth via a torsional spring.

[0015] From the above technical solutions, the weeding device with the weeding arm blade rebounding when encountering resistance provided by the embodiments of the present specification has at least the following beneficial effects:

[0016] 1. The elastic positioning elastic arm rod protects the weeding arm from encountering resistance, thereby avoiding the problem of blade wear caused by blade impact on stones, affecting the service life of the device. The non-contact transmission of the magnetic force of the weeding arm spacing adjusting device completes the spacing adjustment of the weeding arm on the magnetic slide, thereby achieving the effect of a novel non-contact weeding arm blade adjusting device. The problem of foreign grass clippings, stone particles being stuck in the threaded sliding groove can be avoided. At the same time, the spacing adjustment of each weeding arm is satisfied, and the cleaning device and the elastic arm rod can be adjusted in position according to the corresponding weeding arm, thereby achieving adaptively cleaning and anti-collision work on the weeding arm at different positions.

[0017] 2. The weeding arm spacing adjusting device is provided, and a plurality of threads with different pitches on the cam variable-pitch sliding table are used to adjust the distance of a plurality of magnetic moving blocks. The magnetic moving blocks drive the magnetic slide on the sliding sleeve to adjust the position by magnetic force. The threaded sliding groove on the cam variable-pitch sliding table is closed by the sliding sleeve. The non-contact transmission of the magnetic force completes the spacing adjustment of the weeding arm on the magnetic slide, thereby achieving the effect of a novel non-contact weeding arm blade adjusting device. The problem of foreign grass clippings, stone particles being stuck in the threaded sliding groove can be avoided.

[0018] 3. The air pressure generated by the lifting device drives the sealing sleeve to break through the positioning effect of the spring force on the fixed air pipe and move downward. The sealing sleeve drives the lifting seat to move downward after moving downward. The cleaning shaft plate is controlled by the sweeping device to rotate in one direction, thereby achieving the effect of automatically cleaning the grass accumulated at the bottom end of the weeding arm. Through the symmetrically arranged cleaning shaft plates, the effect of symmetrically rotating the two cleaning shaft plates is achieved. That is, when the cleaning shaft plate on one side of the center line of the cam variable-pitch sliding table rotates counterclockwise, the cleaning shaft plate on the other side of the center line of the cam variable-pitch sliding table rotates clockwise, thereby achieving the purpose of sweeping the grass accumulated at the bottom of the weeding arm from the central area to the two side areas, and further improving the cleaning effect of the grass.

[0019] 4. The limiting clamping groove and the one-way tooth with a protrusion are provided, thereby achieving the effect of one-way rotation of the transmission gear shaft, further achieving one-way rotation of the cleaning shaft plate, thereby achieving the purpose of sweeping the grass accumulated at the bottom of the weeding arm from the central area to the two side areas, and further achieving the problem of grass accumulation and blockage at the weeding arm blade. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments

[0021] Figure 1 The overall structure of the present application is shown schematically;

[0022] Figure 2 The structure of the lifting platform in the present application is shown schematically;

[0023] Figure 3 The internal structure of the sleeve rod in the present application is shown schematically;

[0024] Figure 4 The structure of the trigger block in the present application is shown schematically;

[0025] Figure 5 The structure of the sliding sleeve in the present application is shown schematically;

[0026] Figure 6 The structure of the cam variable-pitch sliding table in the present application is shown schematically;

[0027] Figure 7 The structure of the lifting device in the present application is shown schematically;

[0028] Figure 8 The structure of the fixed air pipe in the present application is shown schematically;

[0029] Figure 9 The structure of the driving disc in the present application is shown schematically;

[0030] Figure 10 The internal structure of the lifting seat in the present application is shown schematically;

[0031] Figure 11 The structure of the rotating disc in the present application is shown schematically;

[0032] Figure 12 The structure of the one-way tooth seat in the present application is shown schematically;

[0033] Figure 13 The structure of the limiting clamping groove in the present application is shown schematically;

[0034] Figure 14 The structure of the cleaning shaft plate in the present application is shown schematically;

[0035] Figure 15 The internal ball structure of the magnetic moving block in the present application is shown schematically.

[0036] In the figure: 1 vehicle body, 2 lifting platform, 3 weeding base, 4 distance adjusting device between hoe arms, 41 sliding sleeve, 42 adjusting motor, 43 cam variable distance sliding table, 44 magnetic moving block, 5 magnetic sliding base, 6 hoeing 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 disc, 134 eccentric rod, 135 total lifting plate, 136 one-way tooth seat, 1361 limit clamping groove, 1362 one-way tooth, 14 lifting device, 141 communication seat, 142 air pressure plate, 143 extrusion rod, 144 total pressing plate, 145 lifting motor, 146 driving disc, 147 eccentric shaft. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0038] Reference Figures 1-15As shown, a kind of weeding device of hoe arm blade resistance rebounding includes vehicle body 1, the bottom of vehicle body 1 is equipped with lifting platform 2, the bottom of lifting platform 2 is equipped with weeding base 3;Hoe arm spacing adjusting device 4, hoe arm spacing adjusting device 4 is arranged on weeding base 3, magnetic force sliding seat 5 is arranged on hoe arm spacing adjusting device 4, the bottom of magnetic force sliding seat 5 is elastically connected with hoeing arm 6 by torsional spring, the bottom of hoeing arm 6 is fixedly connected with blade, lifting platform 2 uses cylinder or electric push rod to adjust the height of weeding base 3 as a whole, in non-working state, lifting platform 2 controls weeding base 3 to be positioned at high position, the blade at the bottom of hoeing arm 6 does not contact ground, in working state, lifting platform 2 controls weeding base 3 to be positioned at low position, the blade at the bottom of hoeing arm 6 contacts ground, realize the cleaning of hoeing arm 6 to weeds by using normal driving of vehicle body 1, the both sides of hoeing arm 6 are provided with groove, elastic arm rod 7 is slidably connected in groove, one end of elastic arm rod 7 away from hoeing arm 6 is elastically connected with sleeve rod 8 by spring, elastic arm rod 7 can be telescopic in sleeve rod 8, the surface of elastic arm rod 7 is slidably connected to the inner wall of sleeve rod 8, sleeve rod 8 is slidably connected with clamping shaft 9, the both ends of clamping shaft 9 are fixedly connected on weeding base 3, the inside of sleeve rod 8 is elastically connected with trigger block 11 by resistance spring 10, trigger block 11 is limitedly slid in sleeve rod 8, trigger block 11 is inserted on elastic arm rod 7, and the side of trigger block 11 close to hoeing arm 6 is provided as inclined surface, trigger block 11 is used for the elastic positioning of elastic arm rod 7, when elastic arm rod 7 is subjected to greater resistance, the setting of resistance spring 10 on trigger block 11 and inclined surface can make it elastically give way, set the force required for trigger block 11 to give way as Y, and the resistance of cleaning when normally cleaning weeds is set as X, X is less than Y, so when hoeing arm 6 normally hoes weeds, hoeing arm 6 is in stable position to work, when hoeing arm 6 meets hard particles or small stones when hoeing, the resistance received at this time will be greater than or equal to Y, then trigger block 11 gives way and rebounds, at this time, hoeing arm 6 is elastically tilted by hard particles or small stones, the distance between elastic arm rod 7 and sleeve rod 8 is reduced, and the whole hoeing arm 6 can realize resistance rebounding effect, thereby avoiding the problem that blade is worn out due to blade impacting stone, and affecting the service life of device;Cleaning device 12 is arranged on magnetic force sliding seat 5, and is used for cleaning accumulated weeds.

[0039] The distance adjusting device 4 between the weeding arms in the embodiment comprises a sliding sleeve 41, both ends of the sliding sleeve 41 are fixedly connected to the weeding base 3, one end of the sliding sleeve 41 is provided with an adjusting motor 42, the output shaft of the adjusting motor 42 is clamped with a cam variable-pitch sliding table 43, both ends of the cam variable-pitch sliding table 43 are rotatably connected in the sliding sleeve 41, the surface of the cam variable-pitch sliding table 43 is threadedly connected with a magnetic moving block 44, the cam variable-pitch sliding table 43 is provided with a plurality of threads with different pitches, each thread drives a station to move, and the interior of each magnetic moving block 44 is provided with a ball, the ball works individually in each thread, when the cam variable-pitch sliding table 43 rotates, all stations will move at the same time, and the distance of each station moving is not the same, the technology of the cam variable-pitch sliding table 43 controlling the variable-pitch is the prior art, which is used to realize the pitch adjustment of the plurality of magnetic moving blocks 44, the surface of the magnetic moving block 44 is slidably connected with the inner wall of the sliding sleeve 41, the limitation of the sliding sleeve 41 inner wall groove makes each magnetic moving block 44 can only move linearly, and the surface of the magnetic moving block 44 is magnetically connected with the inner wall of the magnetic sliding seat 5, a magnet is arranged 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 using 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 variable-pitch sliding table 43 to move, the magnetic moving block 44 drives the magnetic sliding seat 5 on the sliding sleeve 41 to adjust the position by using the magnetic force, the thread sliding groove on the cam variable-pitch sliding table 43 is closed by the setting of the sliding sleeve 41, the distance adjustment of the weeding arm 6 on the magnetic sliding seat 5 is completed by combining the non-contact transmission of the magnetic force, thereby achieving the effect of the novel non-contact adjustment of the weeding arm blade, which can avoid the problem that the external weeds, debris, stones and particles are clamped into the thread sliding 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 limiting of the magnetic sliding seat 5, so that it can only move linearly.

[0040] Further, the cleaning device 12 comprises a fixed air pipe 121 and the lifting device 14, the surface of the fixed air pipe 121 is fixedly connected with the inner part of the magnetic slide 5, the surface of the fixed air pipe 121 is pistonically connected with a sealing sleeve 122, and the surface of the fixed air pipe 121 is fixedly connected with the bottom inside the sealing sleeve 122 through a spring, the spring on the fixed air pipe 121 in the normal state is used for positioning the sealing sleeve 122, when the sealing sleeve 122 is pressed, the downward movement of the sealing sleeve 122 can also be realized by the deformability of the spring, and after the end of the pressing, the spring at the place can also realize the resetting work of the sealing sleeve 122 by the elastic force, the surface of the sealing sleeve 122 is fixedly connected with a lifting seat 123, the inner part of the lifting seat 123 is provided with the sweeping device 13, one side of the lifting seat 123 is rotatably connected with a cleaning shaft plate 124, the cleaning shaft plate 124 is in the high position in the non-working state, when it is needed to clean the weeds in front of the blades at the bottom of the grass arm 6, the lifting device 14 and the sweeping device 13 are started in sequence, the lifting device 14 drives the sealing sleeve 122 to break through the positioning effect of the spring elastic force on the fixed air pipe 121 by the air pressure, and moves downward, the sealing sleeve 122 drives the lifting seat 123 to move downward as a whole after moving downward, at this time, the cleaning shaft plate 124 is aligned with the area in front of the blades at the bottom of the grass arm 6, the cleaning shaft plate 124 is controlled to rotate in one direction by the sweeping device 13, the effect that the weeds accumulated at the bottom end of the grass arm 6 are automatically cleaned is realized, at the same time, the sealing sleeve 122, the lifting seat 123 and the cleaning shaft plate 124 are provided in plurality, and they are symmetrically distributed with the center line of the cam variable-distance sliding table 43 as the axis of symmetry, correspondingly, each cleaning shaft plate 124 which is symmetrically distributed also rotates in a symmetrical manner, when the cleaning shaft plate 124 on one side of the center line of the cam variable-distance sliding table 43 rotates counterclockwise, the cleaning shaft plate 124 on the other side of the center line of the cam variable-distance sliding table 43 rotates clockwise, so that the weeds accumulated at the bottom of the grass arm 6 are swept from the central area to the two side areas, and the cleaning effect of the weeds is further improved.

[0041] The sealing sleeve 122, the lifting seat 123 and the cleaning shaft plate 124 are provided in plurality, and they are symmetrically distributed with the center line of the cam variable-distance sliding table 43 as the axis of symmetry, correspondingly, each cleaning shaft plate 124 which is symmetrically distributed also rotates in a symmetrical manner, that is, when the cleaning shaft plate 124 on one side of the center line of the cam variable-distance sliding table 43 rotates counterclockwise, the cleaning shaft plate 124 on the other side of the center line of the cam variable-distance sliding table 43 rotates clockwise, so that the weeds accumulated at the bottom of the grass arm 6 are swept from the central area to the two side areas, and the cleaning effect of the weeds is further improved.

[0042] Further, the lifting device 14 comprises a communication seat 141 and a lifting motor 145, the surface of the communication seat 141 is fixedly connected with the surface of the magnetic sliding seat 5, the surface of the communication seat 141 is fixedly connected with the end of the fixed air pipe 121, and the inside of the communication seat 141 is communicated with the inside 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 inside of the communication seat 141 is piston-connected with an air pressure plate 142, the inside of the communication seat 141 at the side close to the fixed air pipe 121 is a sealed cavity, when the air pressure plate 142 moves and extrudes to the fixed air pipe 121, the constant gas in the sealed cavity is extruded into the fixed air pipe 121 and is 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, the extrusion rod 143 is slidingly connected with a total pressing plate 144, and the surface of the extrusion rod 143 is slidingly connected on one side of the communication seat 141, the output shaft of the lifting motor 145 is clamped with a driving disc 146, the driving disc 146 is slidingly connected with the top of the total pressing plate 144 through an eccentric shaft 147, by arranging the total pressing plate 144, the plurality of extrusion rods 143 can be driven by the total pressing plate 144 while adjusting the position of the weeding arm 6, before the lifting motor 145 is started, the cleaning shaft plate 124 is at a high position, when the lifting motor 145 works, 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 disc 146, when the total pressing plate 144 moves to the communication seat 141, the air pressure plate 142 on the extrusion rod 143 is synchronously moved, when the air pressure plate 142 moves in the communication seat 141, the gas is extruded, the extruded gas is transmitted to the inside of the sealing sleeve 122 through the fixed air pipe 121, because the gas is hard extruded, the air pressure can drive the sealing sleeve 122 to break through the positioning effect of the spring elasticity on the fixed air pipe 121 and move downward, after moving downward, the 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 front area of the blade at the bottom of the weeding arm 6 can be cleaned.

[0043] Further, the sweeping device 13 comprises a transmission gear shaft 131 and a sweeping motor 132, the end of the sweeping motor 132 is mounted on the weeding base 3, the end of the transmission gear shaft 131 is rotatably connected in the lifting seat 123, the surface of the transmission gear shaft 131 is drivingly connected with the end of the cleaning shaft plate 124 through a transmission belt, the transmission gear shaft 131 and the cleaning shaft plate 124 are both provided with transmission wheels, which are used to drive the cleaning shaft plate 124, and because the transmission is not rigid, when the cleaning shaft plate 124 encounters hard particles or small stones during rotation and cleaning, it can slip, that is, it does not hard impact hard particles or small stones, further avoiding the problem of device damage caused by hard impact of the cleaning shaft plate 124 during weed cleaning. The output shaft of the sweeping motor 132 is clamped with a rotating disc 133, the rotating disc 133 is slidingly connected with a total lifting plate 135 through an eccentric rod 134, the inside of the total lifting plate 135 is slidingly connected with a one-way gear seat 136, the surface of the one-way gear seat 136 is slidingly connected in 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. The transmission gear shaft 131 in the lifting seat 123 after moving down is flush with the one-way gear 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 positioning of the lifting seat 123 as a whole at the lowest point, 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 disc 133, the total lifting plate 135 drives the one-way gear seat 136 to move synchronously during vertical reciprocating movement, the one-way gear seat 136 drives the transmission gear shaft 131 to rotate during movement, the transmission gear shaft 131 drives the cleaning shaft plate 124 to rotate in one direction through the transmission belt during one-way rotation, and the cleaning shaft plate 124 realizes the effect of cleaning the weeds accumulated at the bottom end of the weeding arm 6 during one-way rotation.

[0044] In addition, the inside of the one-way tooth seat 136 is provided with a limiting clamping groove 1361, the inside of the limiting clamping groove 1361 is elastically connected with a one-way tooth 1362 through a torsion spring, the one-way tooth 1362 is provided with a protrusion, through the limiting clamping groove 1361 and the one-way tooth 1362 with a protrusion, when the one-way tooth 1362 moves downward, the one-way tooth 1362 can engage and drive the transmission gear shaft 131 to rotate counterclockwise by the effect of clamping with the limiting clamping groove 1361, when the one-way tooth 1362 moves upward, the one-way tooth 1362 can rotate by giving way in the limiting clamping groove 1361, when the one-way tooth 1362 contacts the transmission gear shaft 131 during upward movement, the one-way tooth 1362 can automatically give way, so as not to drive the transmission gear shaft 131 to rotate, at the same time, after the one-way tooth 1362 rotates by giving way, the one-way tooth 1362 can realize movement reset again by the torsion spring thereon, 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 also only rotate counterclockwise in one direction, thereby meeting the purpose of sweeping the weeds accumulated at the bottom of the weeding arm 6 from the central area to the two side areas, further achieving the problem of avoiding the accumulation and blockage of weeds at the blade of the weeding arm 6.

[0045] The weeding device with the resilient resistance-encountering digging arm blade of the application adjusts the height of the weeding base 3 as a whole by using a cylinder or an electric push rod on the lifting platform 2 in use, and controls the weeding base 3 to be positioned at a high position in a non-working state, so that the blade at the bottom of the weeding arm 6 does not contact the ground; in a working state, the weeding base 3 is controlled by the lifting platform 2 to be positioned at a low position, so that the blade at the bottom of the weeding arm 6 contacts the ground, and the normal driving of the vehicle body 1 realizes the weeding work of the weeding arm 6 on weeds; when the weeding arm 6 encounters hard particles or small stones during weeding, the bottom end of the weeding arm 6 will be subjected to a large resistance, the resistance of weeds encountered during weeding is set as X, the resistance of hard particles or small stones is set as Y, Y is greater than X, at this time, the weeding arm 6 will apply force to the elastic arm rod 7, and the trigger block 11 positioned by the resistance-encountering spring 10 in the sleeve rod 8 is subjected to pressure and then realizes resilience, the weeding arm 6 is elastically raised under the influence of the hard particles or small stones, the distance between the elastic arm rod 7 and the sleeve rod 8 is reduced, the weeding arm 6 as a whole can realize the effect of resistance-encountering resilience, thereby avoiding the problem that the blade collides with the stone and causes the blade to be worn, and affecting the service life of the device; when the vehicle body 1 continues to drive, the weeding arm 6 moves away from the hard particles or small stones, the sleeve rod 8 promotes the elastic arm rod 7 to reset by the internal spring, the weeding arm 6 is moved to reset under the influence of the elastic force, and then continues the weeding work.During the period of weeding, the lifting motor 145 and the sweeping motor 132 are started in turn. Before the lifting motor 145 is started, the cleaning shaft plate 124 is at the high position. When the lifting motor 145 works, 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 disc 146. When the total pressing plate 144 moves to the communication seat 141, it drives the gas pressure plate 142 on the extrusion rod 143 to move synchronously. When the gas pressure plate 142 moves in the communication seat 141, the extrusion of the gas is generated. The extruded gas is transported to the inside of the sealing sleeve 122 through the fixed gas pipe 121. Because the gas is subjected to hard extrusion, the gas pressure can drive the sealing sleeve 122 to break through the positioning effect of the spring elastic force on the fixed gas pipe 121 and move downward. After moving downward, the sealing sleeve 122 drives the lifting seat 123 to move downward as a whole. The transmission gear shaft 131 in the lifting seat 123 after moving downward is flush with the one-way tooth 1362 on the one-way tooth 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. 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 through the eccentric rod 134 on the rotating disc 133. The total lifting plate 135 drives the one-way tooth seat 136 to move synchronously during the vertical reciprocating movement. The one-way meshing drive transmission gear shaft 131 rotates during the movement of the one-way tooth seat 136. The transmission gear shaft 131 rotates in one direction while driving the cleaning shaft plate 124 to rotate in one direction by using the transmission belt. The cleaning shaft plate 124 realizes the effect of cleaning the weeds accumulated at the bottom end of the weeding arm 6 during the one-way rotation. By setting the limiting clamping groove 1361 and the one-way tooth 1362 with a protruding block, the one-way tooth 1362 can mesh and drive the transmission gear shaft 131 to rotate counterclockwise by using the clamping effect with the limiting clamping groove 1361 when moving downward. The one-way tooth 1362 can rotate by giving way when moving upward. When the one-way tooth 1362 contacts the transmission gear shaft 131 during upward movement, the one-way tooth 1362 can automatically give way, so as not to drive the transmission gear shaft 131 to rotate. At the same time, the one-way tooth 1362 can realize movement reset again by using the torsional spring thereon after giving way, thereby facilitating 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 sweeping 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 blockage of the weeds accumulated at the blade of the weeding arm 6.The sealing sleeves 122, the lifting seats 123 and the cleaning shaft plates 124 are provided in plurality and symmetrically distributed with the center line of the cam variable distance sliding table 43 as the symmetric axis. Correspondingly, each of the symmetrically distributed cleaning shaft plates 124 also performs a symmetric one-way rotation. When the cleaning shaft plate 124 on one side of the center line of the cam variable distance sliding table 43 rotates counterclockwise, the cleaning shaft plate 124 on the other side of the center line of the cam variable distance sliding table 43 rotates clockwise, so as to achieve the purpose of sweeping the weeds accumulated at the bottom of the weeding arm 6 from the central area to the two side areas, and further improve the weeding effect.

[0046] Moreover, the operator can clean weeds at different positions according to the production stage and spacing of different planting crops. By starting the adjusting motor 42, the output shaft of the adjusting motor 42 drives the magnetic moving block 44 on the cam variable distance sliding table 43 to move. The magnetic moving block 44 drives the magnetic sliding seat 5 on the sliding sleeve 41 to adjust the position by magnetic force. The cam variable distance sliding table 43 is provided with a plurality of threads with different pitches. Each thread drives one station to move, and the interior of each magnetic moving block 44 is provided with a ball. The ball works individually in each thread. When the cam variable distance sliding table 43 rotates, all stations move at the same time, and the distance of each station is different. By the setting of the sliding sleeve 41, the thread sliding groove on the cam variable distance sliding table 43 is closed. The spacing adjustment of the weeding arm 6 on the magnetic sliding seat 5 is completed by the non-contact transmission of magnetic force, so as to achieve the effect of the novel non-contact adjustment of the weeding arm blade. The problem that the weeds, debris, stones and particles outside are stuck in the thread sliding groove can be avoided. At the same time, the cleaning shaft plate 124 and the elastic arm rod 7 can adjust the position according to the corresponding weeding arm 6, so as to adaptively clean and prevent the weeding arm 6 at different positions.

[0047] The above embodiments are only used to illustrate the embodiments of the present application, but not limit the embodiments of the present application. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the embodiments of the present application. Therefore, all equivalent technical solutions belong to the scope of the embodiments of the present application, and the patent protection scope of the embodiments of the present application should be defined by the claims.

Claims

1. A weeding device with a resiliently retractable hoe blade, characterised in that: Include: The bottom of the vehicle body (1) is provided with a lifting platform (2), and the bottom of the lifting platform (2) is provided with a weeding base (3); The weeding base (3) is provided with a weeding arm spacing adjusting device (4), the weeding arm spacing adjusting device (4) is provided with a magnetic slide (5), the bottom of the magnetic slide (5) is elastically connected with a weeding arm (6) through a torsion spring, the weeding arm (6) is slidably connected with a elastic arm rod (7), the end of the elastic arm rod (7) away from the weeding arm (6) is elastically connected with a sleeve rod (8) through a spring, the sleeve rod (8) is slidably connected with a clamping shaft (9), the inside of the sleeve rod (8) is elastically connected with a trigger block (11) through a resistance spring (10), the trigger block (11) is inserted into the elastic arm rod (7); The cleaning device (12) is arranged on the magnetic slide (5) and is used for cleaning the accumulated weeds; The weeding arm spacing adjusting device (4) comprises a sliding sleeve (41), both ends of the sliding sleeve (41) are fixedly connected to the weeding base (3), one end of the sliding sleeve (41) is provided with an adjusting motor (42), the output shaft of the adjusting motor (42) is clamped with a cam variable-pitch sliding table (43), and the surface of the cam variable-pitch sliding table (43) is threadedly connected with a magnetic moving block (44); The magnetic slide (5) is slidably connected to the sliding sleeve (41), both ends of the cam variable-pitch sliding table (43) are rotatably connected in the sliding sleeve (41), the surface of the magnetic moving block (44) is slidably connected with the inner wall of the sliding sleeve (41), and the surface of the magnetic moving block (44) is magnetically connected with the inner wall of the magnetic slide (5).

2. The device according to claim 1, wherein: The bottom of the weeding arm (6) is fixedly connected with a blade, the surface of the elastic arm rod (7) is slidably connected to the inner wall of the sleeve rod (8), and both ends of the clamping shaft (9) are fixedly connected to the weeding base (3).

3. The device of claim 1, wherein the blade is spring-loaded to bounce off an obstruction. 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 with the inside of the magnetic slide (5), the surface of the fixed air pipe (121) is piston-connected with a sealing sleeve (122), the surface of the fixed air pipe (121) is fixedly connected with the bottom in the inside of the sealing sleeve (122) through a spring, the surface of the sealing sleeve (122) is fixedly connected with a lifting seat (123), the inside of the lifting seat (123) is provided with a sweeping device (13), and one side of the lifting seat (123) is rotatably connected with a cleaning shaft plate (124).

4. A weed control device according to claim 3 wherein: The lifting device (14) comprises a communication seat (141) and a lifting motor (145), the surface of the communication seat (141) is fixedly connected with the surface of the magnetic slide (5), the inside of the communication seat (141) is piston-connected with an air pressure plate (142), the air pressure plate (142) is fixedly connected with a pressing rod (143), the pressing rod (143) is slidably connected with a total pressing plate (144), and the output shaft of the lifting motor (145) is clamped with a driving disc (146).

5. A weed control device according to claim 4 wherein: The end of the lifting motor (145) is mounted on the weeding base (3), the driving disc (146) is in sliding connection with the top of the total pressing plate (144) through an eccentric shaft (147), the surface of the communication seat (141) is fixedly connected with the end of the fixed air pipe (121), and the inside of the communication seat (141) is in communication with the inside of the sealing sleeve (122) through the fixed air pipe (121).

6. The device of claim 4, wherein the blade is spring-loaded to return to the retracted position when the blade encounters an obstruction. The sweeping device (13) comprises a transmission gear shaft (131) and a sweeping motor (132), the end of the transmission gear shaft (131) is rotationally connected in the inside of the lifting seat (123), the output shaft of the sweeping motor (132) is clamped with a rotating disc (133), the rotating disc (133) is in sliding connection with a total lifting plate (135) through an eccentric rod (134), and the inside of the total lifting plate (135) is in sliding connection with a one-way gear seat (136).

7. A weed control device according to claim 6 wherein: The surface of the transmission gear shaft (131) is in driving connection with the end of the cleaning shaft plate (124) through a conveying 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 in sliding connection in the inside of the lifting seat (123), and the one-way gear seat (136) is used for driving the transmission gear shaft (131) to rotate in one direction.

8. The device of claim 6, wherein the blade is spring-loaded to bounce off an obstruction. The inside of the one-way gear seat (136) is provided with a limiting clamping groove (1361), the inside of the limiting clamping groove (1361) is elastically connected with a one-way gear tooth (1362) through a torsion spring, and the one-way gear tooth (1362) is provided with a protruding block.

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