CN119384948A - A cutting assembly for agricultural cutting machine and a method of using the same - Google Patents
A cutting assembly for agricultural cutting machine and a method of using the same Download PDFInfo
- Publication number
- CN119384948A CN119384948A CN202411857368.XA CN202411857368A CN119384948A CN 119384948 A CN119384948 A CN 119384948A CN 202411857368 A CN202411857368 A CN 202411857368A CN 119384948 A CN119384948 A CN 119384948A
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- Prior art keywords
- cutting
- blade
- cutting blade
- assembly
- connecting block
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/73—Cutting apparatus
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/73—Cutting apparatus
- A01D34/733—Cutting-blade mounting means
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/76—Driving mechanisms for the cutters
- A01D34/78—Driving mechanisms for the cutters electric
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/82—Other details
- A01D34/824—Handle arrangements
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D75/00—Accessories for harvesters or mowers
- A01D75/18—Safety devices for parts of the machines
- A01D75/182—Avoiding overload
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Harvester Elements (AREA)
Abstract
本发明公开了一种用于农用切割机的切割总成及使用方法，涉及农业切割技术领域，包括控制握柄，还包括与控制握柄转动连接的切割总成；所述切割总成包含切割架，所述切割架与控制握柄之间转动连接，所述切割架上安装有切割轮总成；所述切割轮总成包括上固定盘以及下固定盘，所述上固定盘与下固定盘之间固定连接，所述上固定盘上固定安装有固定罩，所述切割架上固定安装有切割电机。优点在于：本发明利用转动切割时产生的离心力带动切割刀片移动，使切割刀片在一定范围内进行弹性伸缩，在触碰硬物时自动弯曲折叠，降低切割刀片破裂的概率，此外还可根据需求来对切割刀片进行锁定，用于无硬物场所的切割，提高切割效率。
The present invention discloses a cutting assembly and a method of use for an agricultural cutting machine, which relates to the field of agricultural cutting technology, including a control handle and a cutting assembly rotatably connected to the control handle; the cutting assembly includes a cutting frame, the cutting frame is rotatably connected to the control handle, and a cutting wheel assembly is installed on the cutting frame; the cutting wheel assembly includes an upper fixed disk and a lower fixed disk, the upper fixed disk and the lower fixed disk are fixedly connected, a fixed cover is fixedly installed on the upper fixed disk, and a cutting motor is fixedly installed on the cutting frame. The advantages are: the present invention utilizes the centrifugal force generated during rotary cutting to drive the cutting blade to move, so that the cutting blade can be elastically extended and retracted within a certain range, and automatically bends and folds when touching a hard object, thereby reducing the probability of the cutting blade breaking. In addition, the cutting blade can be locked according to demand, and is used for cutting in places without hard objects, thereby improving cutting efficiency.
Description
Technical Field
The invention relates to the technical field of agricultural cutting, in particular to a cutting assembly for an agricultural cutting machine and a using method thereof.
Background
The grass cutter is used as a cutting device in agricultural cutting machines, is commonly used in places such as home gardens, parks, playgrounds, road greenbelts and the like, and has the main function of cutting grass on a lawn to a certain height through a rotating blade or other cutting devices, so that the lawn is kept neat and beautiful.
The current blade lawn mower adopts disk or two kinds of cutting blade of protrusion, under non-use condition, adopt the protection casing to cover the blade generally, in the cutting process, if meet the hard thing, the blade bumps the hard thing and can cause the blade to warp, therefore publication number CN214385124U discloses a scalable lawn mower blade, it includes connecting portion, the both ends of connecting portion all are provided with cutting portion, two cutting portion centrosymmetries, the spliced eye has been seted up along length direction on the connecting portion, cutting portion sliding connection is in the spliced eye, first fixed orifices has been seted up on the cutting portion, a plurality of and first fixed orifices complex second fixed orifices have been seted up on the connecting portion.
Above-mentioned scalable lawn mower blade has strengthened the structural strength between first horizontal segment and the crooked section and second horizontal segment and the crooked section through setting up the stiffening rib, has reduced and has cut hard thing and cracked possibility at the whole high-speed pivoted in-process of blade, has improved the holistic safety and stability of cutting part, and the cutting part is portable relative connecting portion simultaneously, can adjust the holistic length of blade and stop the cover with the adaptation different specifications, improves the holistic commonality of blade to the cooperation of stopper and spacing groove makes the cutting part remove the scope fixed in the spliced eye, in order to avoid the condition that the cutting part breaks away from relative connecting portion to take place.
However, when the telescopic lawn mower blade is specifically used, as the blade and the blade rest are fixedly connected, when the blade rest rotates, the blade is driven to rotate at a high speed, and although the blade is reinforced by the reinforcing rib, the blade edge breakage stroke is caused when the blade collides with a hard object, the cutting efficiency is affected, the blade rest is provided with a plurality of blades, and when the length of the blade is adjusted, each blade needs to be separately adjusted, so that the operation is complicated, and the adjusting efficiency is low.
Therefore, the novel cutting assembly for the agricultural cutting machine and the using method thereof can be adopted to solve the defects in the prior art.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a cutting assembly for an agricultural cutting machine and a using method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the cutting assembly for the agricultural cutting machine comprises a control grab handle and a cutting assembly rotationally connected with the control grab handle;
The cutting assembly comprises a cutting frame, the cutting frame is rotationally connected with the control grab handle, and a cutting wheel assembly is arranged on the cutting frame;
the cutting wheel assembly comprises an upper fixed disc and a lower fixed disc, the upper fixed disc is fixedly connected with the lower fixed disc, a fixed cover is fixedly arranged on the upper fixed disc, a cutting motor is fixedly arranged on the cutting frame, and a moment-increasing mechanism is arranged between the fixed cover and the cutting motor and used for increasing the torque of the cutting wheel assembly;
the utility model discloses a cutting device, including fixed disk, cutting frame, upper fixed disk, lower fixed disk, reset mechanism, cutting blade, cutting frame, fixed disk, upper fixed disk and lower fixed disk are connected in a sliding manner between upper fixed disk and the lower fixed disk, rotate between lower fixed disk and the cutting frame to be connected, install a plurality of and corresponding first connecting block matched with spacing subassembly on the upper fixed disk, every reset mechanism is all installed between first connecting block and upper fixed disk and the lower fixed disk, every a cutting blade is all installed through blade installation mechanism on the first connecting block.
Preferably, a protective cover matched with the cutting wheel assembly is arranged on the cutting frame, and the protective cover is in damping rotation connection with the cutting frame.
Preferably, the torque increasing mechanism comprises a variable speed helical gear fixedly arranged on the fixed cover, a helical gear meshed with the variable speed helical gear is fixedly arranged on the driving end of the cutting motor, and the diameter of the helical gear is smaller than that of the variable speed helical gear.
Preferably, the limiting component comprises a thread cylinder fixedly arranged on the upper fixed disc, a thread sleeve is rotatably arranged on the thread cylinder in a thread way, a movable ring is rotatably arranged on the thread sleeve, and the movable ring is in sliding connection with the thread cylinder;
The movable ring is fixedly provided with a connecting hinge, the connecting hinge is rotatably provided with a push-pull rod, one end of the push-pull rod, which is far away from the push-pull rod, is rotatably provided with a movable plate, the movable plate is in sliding connection with an upper fixed disc, and the upper fixed disc is provided with a tooth column through a sliding mechanism;
the damping sliding sleeve is fixedly arranged on the tooth column, the damping sliding rod matched with the first connecting block is arranged on the damping sliding sleeve in a sliding mode, and the stroke amplifying mechanism is arranged between the tooth column and the moving plate.
Preferably, the sliding mechanism comprises fixed blocks fixedly arranged on two sides of the tooth column, a plurality of limit sliding columns are rotatably arranged on the two fixed blocks, and two groove bodies matched with the corresponding limit sliding columns are formed in the upper fixed disc.
Preferably, the stroke amplifying mechanism comprises a gear rotatably arranged on the moving plate, a toothed plate meshed with the gear is fixedly arranged on the upper fixed plate, and a plurality of tooth grooves meshed with the gear are formed in the tooth column.
Preferably, the reset mechanism comprises a fixed plate fixedly arranged between an upper fixed disc and a lower fixed disc, a plurality of limiting telescopic rods are fixedly arranged between the first connecting block and the fixed plate, a plurality of reset springs are fixedly arranged between the first connecting block and the fixed plate, and each reset spring is sleeved outside the corresponding limiting telescopic rod.
Preferably, the blade mounting mechanism comprises a rotating shaft fixedly mounted on the first connecting block, a second connecting block is rotatably mounted on the rotating shaft, two spring rolls are fixedly mounted between the second connecting block and the rotating shaft, and the second connecting block is fixedly connected with the cutting blade through bolts.
Preferably, a slot matched with the damping slide bar is formed in the rotating shaft, two jacks are formed in the slot, and two inserting rods matched with the corresponding jacks are fixedly mounted at one end, close to the rotating shaft, of the damping slide bar.
The invention also provides a using method of the cutting assembly for the agricultural cutting machine, which comprises the steps of:
s1, a controller matched with a cutting motor is arranged on a control grab handle and used for controlling the operation of the cutting motor and adjusting the output power of the cutting motor according to a cutting scene;
S2, before cutting, adjusting an included angle between the cutting assembly and the control grab handle according to the height of an operator, so that the included angle between the cutting assembly and the control grab handle reaches the most comfortable operation angle of the operator, and keeping the cutting assembly parallel to the cutting surface;
S3, after the angle adjustment is finished, the cutting motor is controlled by the controller to start, the cutting motor drives the upper fixed disc to rotate through the moment-increasing mechanism, centrifugal force generated by rotation drives the first connecting block to slide between the upper fixed disc and the lower fixed disc, so that the blade mounting mechanism on the first connecting block extends out of the upper fixed disc, the cutting blade also can be unfolded from the blade mounting mechanism under the action of the centrifugal force, and at the moment, the center points of the cutting blade and the fixed disc above the first connecting block are positioned on the same straight line;
S4, when the hard object is blocked in the cutting process, the cutting blade collides with the hard object, firstly, the cutting blade is driven to rotate around the blade mounting mechanism under the action of the pressing force, so that the cutting blade is inclined, the impact force between the cutting blade and the hard object is reduced and is used for protecting the cutting blade, meanwhile, when the cutting blade is inclined, the impact force born by the cutting blade is divided into two directions, the component force in one direction can enable the cutting blade to continuously rotate, the component force in the other direction can enable the first connecting block to retract into the upper fixing disc and the lower fixing disc and is used for further protecting the cutting blade, and once the cutting blade is separated from the hard object, the cutting blade is restored to the original position under the action of the reset mechanism to perform cutting operation;
s5, the length of the upper fixing disc, which is used for extending out of the cutting blade, is adjusted through the limiting component, the cutting diameter of the cutting blade is adjusted, and meanwhile the limiting component is used for locking the cutting blade and fixing the cutting blade, so that the cutting blade is suitable for high-position cutting, hard object blocking is avoided, and the fixed cutting blade has higher cutting efficiency relative to the telescopic cutting blade.
Compared with the prior art, the invention has the advantages that:
1. This agricultural cutting machine's cutting assembly is when cutting, through setting up spacing subassembly, can adjust a plurality of cutting blade's position simultaneously, and adjustment efficiency is high, and every cutting blade's adjustment displacement volume all equals, ensures that every cutting blade's tip all is on same circumference, guarantees cutting efficiency effectively.
2. This agricultural cutting machine's cutting assembly is when cutting, through setting up canceling release mechanical system, realizes cutting blade's free shrink to realize cutting blade's automatic folding accomodating through setting up the spring and rolling up, take out cutting blade from last fixed disk and lower fixed disk with the centrifugal force that the rotation produced during the cutting, when meetting hard thing, but automatic rotation and withdrawal, can reduce cutting blade's probability of breaking effectively, protect cutting blade effectively.
3. This cutting assembly of agricultural cutting machine is when cutting, carries out spacingly through setting up mobilizable damping slide bar and damping sliding sleeve to the movable plate on the cutting blade for the maximum movable range of control cutting blade, so change cutting blade's cutting radius, and cooperate the epaxial slot of axis of rotation, insert the damping slide bar and can lock cutting blade in the slot, be applicable to the cutting that does not have the hard thing and hinder, improve cutting blade's stability, thereby improve cutting efficiency.
4. When the cutting assembly of the agricultural cutting machine is used for cutting, the stroke expansion structure is arranged, the displacement of the movable plate in the limiting assembly can be expanded, the threaded sleeve can move a small distance, long-distance adjustment of the damping slide rod can be realized, the overall thickness of the cutting wheel assembly is reduced, the volume of the cutting wheel assembly is reduced, the wind resistance is reduced, the energy utilization rate of the cutting motor is improved, and the cutting efficiency is improved.
In summary, the invention utilizes the centrifugal force generated during rotary cutting to drive the cutting blade to move, so that the cutting blade elastically stretches within a certain range, and automatically bends and folds when touching hard objects, thereby reducing the fracture probability of the cutting blade, and in addition, the cutting blade can be locked according to the requirements for cutting in places without hard objects, and improving the cutting efficiency.
Drawings
The invention is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic view of a cutting assembly for an agricultural cutting machine according to the present invention;
FIG. 2 is a schematic detail view of the structure of FIG. 1 rotated by a certain angle;
FIG. 3 is an enlarged schematic detail view of the cutting member of FIG. 1 rotated a certain angle;
FIG. 4 is a schematic detailed view of the enclosure of FIG. 3 in a closed position;
FIG. 5 is a schematic detailed view of the structure of FIG. 4 rotated by a certain angle;
FIG. 6 is an enlarged schematic detail view of the cutting wheel assembly of FIG. 3;
FIG. 7 is a schematic detailed view of the structure of FIG. 6 rotated by a certain angle;
FIG. 8 is a schematic detail view of the construction of FIG. 6 with the bevel gear and stationary cover removed;
FIG. 9 is a schematic detail view of the planar configuration of the upper and lower retaining plates and the threaded cylinder of FIG. 8 at one of the angles;
FIG. 10 is a schematic detail view of the perspective structure of FIG. 9;
FIG. 11 is a schematic detail view of the planar structure of FIG. 8 with the upper retaining disk removed, at one of its angles;
FIG. 12 is a schematic detail view of the perspective structure of FIG. 11;
FIG. 13 is a schematic detail view of the structure of FIG. 12 with the lower retaining disk removed;
FIG. 14 is an enlarged schematic detail view of the threaded sleeve, shift ring, and set of cutting blades of FIG. 13;
FIG. 15 is a schematic detail view of the planar structure of FIG. 14 at one of the angles;
FIG. 16 is an enlarged schematic detail view of portion A of FIG. 15;
FIG. 17 is a schematic detail view of the perspective construction of the portion A and the post of FIG. 15;
FIG. 18 is an enlarged schematic detail view of the reset mechanism, blade mounting mechanism and cutting blade of FIG. 14;
fig. 19 is an exploded view of the blade mounting mechanism of fig. 18 in schematic detail.
In the figure, a control grab handle, a cutting motor, a protective cover 3, a cutting wheel assembly 4, a cutting frame 5, a fixed disc 6, a speed changing bevel gear 7, a fixed cover 8, a cutting blade 9, a lower fixed disc 10, a threaded cylinder 11, a sealing rubber strip 12, a threaded sleeve 13, a moving ring 14, a limiting component 15, a return mechanism 16, a connecting hinge 17, a blade mounting mechanism 18, a tooth column 19, a fixed block 20, a toothed plate 21, a gear 22, a moving plate 23, a push-pull rod 24, a damping sliding sleeve 25, a damping sliding rod 26, a limiting sliding column 27, a fixed plate 28, a return spring 29, a limiting telescopic rod 30, a first connecting block 31, a second connecting block 32, a rotating shaft 34 and a spring coil 35 are arranged.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, a cutting assembly for an agricultural cutting machine comprises a control grab handle 1 and a cutting assembly rotationally connected with the control grab handle 1, wherein a controller is arranged on the control grab handle 1 and used for controlling the cutting assembly to operate.
The cutting assembly comprises a cutting frame 5, the cutting frame 5 is rotationally connected with the control grab handle 1, a cutting wheel assembly 4 is arranged on the cutting frame 5, a protective cover 3 matched with the cutting wheel assembly 4 is arranged on the cutting frame 5, and the protective cover 3 is in damping rotation connection with the cutting frame 5.
An angle adjusting motor matched with the cutting frame 5 is arranged on the control grab handle 1 and is used for adjusting the angle of the cutting frame 5.
The function of protection casing 3 is in order to protect cutting wheel assembly 4, reduces the probability that cutting wheel assembly 4 damaged, also is in order to protect peripheral operating personnel simultaneously, prevents that cutting wheel assembly 4 from exposing and causing unnecessary cutting risk, adopts damping rotation to connect the purpose in order to make protection casing 3 can stop in optional position.
The cutting wheel assembly 4 comprises an upper fixed disc 6 and a lower fixed disc 10, the upper fixed disc 6 is fixedly connected with the lower fixed disc 10, a fixed cover 8 is fixedly arranged on the upper fixed disc 6, a cutting motor 2 is fixedly arranged on the cutting frame 5, and a moment-increasing mechanism is arranged between the fixed cover 8 and the cutting motor 2 and used for increasing the torque of the cutting wheel assembly 4.
The rotation of the driving end of the cutting motor 2 drives the fixed cover 8 to rotate through the moment-increasing mechanism, so that the upper fixed disc 6 and the lower fixed disc 10 are driven to rotate, and the upper fixed disc 6 and the lower fixed disc 10 can drive the cutting wheel assembly 4 to rotate to perform cutting operation.
The moment-increasing mechanism comprises a variable-speed helical gear 7 fixedly arranged on a fixed cover 8, a helical gear meshed with the variable-speed helical gear 7 is fixedly arranged on the driving end of the cutting motor 2, and the diameter of the helical gear is smaller than that of the variable-speed helical gear 7.
The bevel gear on the driving end of the cutting motor 2 rotates to drive the large-diameter variable-speed bevel gear 7 meshed with the bevel gear to rotate, and the torque generated by the cutting motor 2 can be amplified because the diameter of the variable-speed bevel gear 7 is larger than that of the bevel gear, so that the cutting wheel assembly 4 has larger cutting torque, and crops with higher hardness can be cut.
In the second embodiment, the technical scheme is that, referring to fig. 3-5 and fig. 8-19, a plurality of first connecting blocks 31 are slidably installed between the upper fixed disk 6 and the lower fixed disk 10, the lower fixed disk 10 is rotatably connected with the cutting frame 5, and a plurality of limiting assemblies 15 matched with the corresponding first connecting blocks 31 are installed on the upper fixed disk 6.
The limiting assembly 15 comprises a threaded cylinder 11 fixedly arranged on the upper fixed disk 6, a threaded sleeve 13 is rotatably arranged on the threaded cylinder 11, a movable ring 14 is rotatably arranged on the threaded sleeve 13, and the movable ring 14 is in sliding connection with the threaded cylinder 11;
The fixed cover 8 is fixedly connected with the lower fixed disk 10 through bolts, the bolts penetrate through the threaded cylinders 11, and through grooves are formed in the middle positions of the upper fixed disk 6 and the lower fixed disk 10 and are used for the bolts to penetrate through.
The movable ring 14 is fixedly provided with a connecting hinge 17, the connecting hinge 17 is rotatably provided with a push-pull rod 24, one end of the push-pull rod 24 far away from the push-pull rod 24 is rotatably provided with a movable plate 23, the movable plate 23 is in sliding connection with the upper fixed disc 6, and the upper fixed disc 6 is provided with a tooth column 19 through a sliding mechanism;
The sliding mechanism comprises fixed blocks 20 fixedly arranged at two sides of the tooth column 19, a plurality of limit sliding columns 27 are rotatably arranged on the two fixed blocks 20, and two groove bodies matched with the corresponding limit sliding columns 27 are arranged on the upper fixed disk 6;
The sliding mechanism is used for limiting the tooth column 19, so that the tooth column 19 is ensured to move stably, the purpose of rotational connection between the limiting sliding column 27 and the fixed block 20 is to convert sliding friction during movement into rolling friction, friction force is effectively reduced, the tooth column 19 moves more smoothly, and service life is prolonged.
The tooth column 19 is fixedly provided with a damping sliding sleeve 25, the damping sliding sleeve 25 is slidably provided with a damping sliding rod 26 matched with the first connecting block 31, and a stroke amplifying mechanism is arranged between the tooth column 19 and the moving plate 23.
The damping sliding sleeve 25 and the damping sliding rod 26 are both of the existing structure, the friction force is mainly increased to increase the moving resistance, and under the action of self gravity of the damping sliding rod 26, the damping sliding rod 26 cannot move freely on the damping sliding sleeve 25, so that external force intervention is needed, the damping sliding rod 26 stops at any position, and the damping sliding rod 26 is regulated more stably.
The threaded sleeve 13 is rotated, the threaded sleeve 13 moves on the threaded sleeve 11 under the action of the threaded sleeve 11, the threaded sleeve 13 moves to drive the moving ring 14 to move, so that the connecting hinge 17 is driven to move, the connecting hinge 17 moves to drive one end of the push-pull rod 24 connected with the connecting hinge 17 to move in the vertical direction, and one end of the push-pull rod 24 away from the connecting hinge 17 is limited by the moving plate 23, so that the push-pull rod 24 does not move horizontally but moves in an angle change, and both end parts of the push-pull rod 24 move in the horizontal direction and the vertical direction, but only the inclination angle of the push-pull rod 24 changes;
The change of the inclination angle of the push-pull rod 24 means that the horizontal position of the end, far away from the connecting hinge 17, of the push-pull rod 24 is changed, the push-pull rod 24 drives the tooth post 19 to move through the stroke amplifying mechanism, so that the damping sliding sleeve 25 and the damping sliding rod 26 are driven to move, the height of the damping sliding rod 26 is adjustable, and the first connecting block 31 can be limited;
When the first connecting block 31 slides between the upper fixed disk 6 and the lower fixed disk 10 under the action of centrifugal force, the movement is stopped by the limit of the damping slide rod 26, and at this time, the first connecting block 31 reaches the maximum displacement after the limit for adjusting the cutting radius of the cutting blade 9.
The rotating shaft 33 is provided with a slot 34 matched with the damping slide bar 26, two jacks are arranged in the slot 34, and two inserted bars matched with the corresponding jacks are fixedly arranged at one end of the damping slide bar 26 close to the rotating shaft 33.
If the cutting blade 9 needs to be locked, the cutting blade 9 can be locked under the action of the inserting rod and the inserting hole by only inserting the inserting rod on the damping slide rod 26 into the inserting hole on the rotating shaft 33, and the cutting blade 9 cannot retract and rotate.
The stroke amplifying mechanism comprises a gear 22 rotatably arranged on a moving plate 23, a toothed plate 21 meshed with the gear 22 is fixedly arranged on the upper fixed disk 6, and a plurality of tooth grooves meshed with the gear 22 are formed on the tooth column 19.
The gear 22 is driven to move by the movement of the moving plate 23, the gear 22 is driven to rotate under the action of the toothed plate 21, the toothed column 19 is driven to move by the rotation of the gear 22, and the gear 22 is still moving, so that the displacement of the toothed column 19 is larger than that of the moving plate 23, and the stroke amplification is realized.
Through setting up the stroke expansion structure, can carry out the stroke expansion to the displacement volume of movable plate 23, make thread bush 13 remove less distance and can realize damping slide bar 26's long distance regulation, reduce cutting wheel assembly 4's overall thickness, reach and reduce cutting wheel assembly 4's volume, reduce the windage, improve cutting motor 2's energy utilization to improve cutting efficiency.
A reset mechanism 16 is arranged between each first connecting block 31 and the upper fixed disc 6 and between each first connecting block and the lower fixed disc 10, the reset mechanism 16 comprises a fixed plate 28 fixedly arranged between the upper fixed disc 6 and the lower fixed disc 10, a plurality of limit telescopic rods 30 are fixedly arranged between the first connecting blocks 31 and the fixed plate 28, a plurality of reset springs 29 are fixedly arranged between the first connecting blocks 31 and the fixed plate 28, and each reset spring 29 is sleeved outside the corresponding limit telescopic rod 30.
Under the action of centrifugal force, the return spring 29 can be stretched, when the limit of the damping slide rod 26 is not achieved, the higher the rotating speed of the driving end of the cutting motor 2 is, the higher the centrifugal force is, the larger the stretching amount of the return spring 29 is, and at the moment, the longer the cutting blade 9 stretches out, the wider the cutting surface is;
Once the cutting motor 2 stops operating, the first connecting block 31 is reset and retracted between the upper fixed disk 6 and the lower fixed disk 10 under the action of the reset spring 29 to be stored.
Each first connecting block 31 is provided with a cutting blade 9 through a blade mounting mechanism 18, the blade mounting mechanism 18 comprises a rotating shaft 33 fixedly mounted on the first connecting block 31, the rotating shaft 33 is rotatably provided with a second connecting block 32, two spring rolls 35 are fixedly mounted between the second connecting block 32 and the rotating shaft 33, and the second connecting block 32 is fixedly connected with the cutting blade 9 through bolts.
The cutting blade 9 and the second connecting block 32 rotate around the rotating shaft 33 and can only rotate ninety degrees, a limiting clamping block matched with the rotating shaft 33 is arranged on the second connecting block 32, when the cutting motor 2 stops, the included angle between the cutting blade 9 and the first connecting block 31 is ninety degrees, and after the cutting motor 2 operates, the cutting blade 9 drives the second connecting block 32 to rotate around the rotating shaft 33 under the action of centrifugal force, so that the included angle between the cutting blade 9 and the first connecting block 31 is changed into one hundred eighty degrees;
The faster the rotation speed of the cutting motor 2, the greater the centrifugal force and the greater the cutting force of the cutting blade 9.
The upper fixing disc 6 and the lower fixing disc 10 are fixedly provided with a plurality of arc-shaped blocking rubber strips 12, one sides, close to each other, of the two matched blocking rubber strips 12 are attached, when the cutting blade 9 rotates around the rotating shaft 33, the cutting blade can abut against the blocking rubber strips 12, and weeds adhered to the cutting blade 9 are scraped through the blocking rubber strips 12.
In addition, the gap between the upper fixing disc 6 and the lower fixing disc 10 can be blocked by the blocking rubber strips 12, so that the entering of weed scraps between the upper fixing disc 6 and the lower fixing disc 10 is reduced, and a certain dustproof effect is achieved.
The specific operation steps of the device are as follows:
The control grab handle 1 is provided with a controller matched with the cutting motor 2, and is used for controlling the operation of the cutting motor 2 and adjusting the output power of the cutting motor 2 according to a cutting scene;
Before cutting, the included angle between the cutting assembly and the control grab handle 1 needs to be adjusted according to the height of an operator, so that the included angle between the cutting assembly and the control grab handle 1 reaches the most comfortable operation angle of the operator, and the cutting assembly is kept parallel to the cutting surface;
After the angle adjustment is finished, the cutting motor 2 is controlled by the controller to start, the cutting motor 2 drives the upper fixed disc 6 to rotate through the moment-increasing mechanism, centrifugal force generated by rotation drives the first connecting block 31 to slide between the upper fixed disc 6 and the lower fixed disc 10, the blade mounting mechanism 18 on the first connecting block 31 extends out of the upper fixed disc 6, and the cutting blade 9 is unfolded from the blade mounting mechanism 18 under the action of centrifugal force, and at the moment, the center points of the cutting blade 9 and the upper fixed disc 6 of the first connecting block 31 are positioned on the same straight line;
when the hard object is blocked in the cutting process, the cutting blade 9 collides with the hard object, firstly, the cutting blade 9 is driven to rotate around the blade mounting mechanism 18 under the action of the pressing force, so that the cutting blade 9 is inclined, the impact force between the cutting blade 9 and the hard object is reduced, the cutting blade 9 is protected, meanwhile, when the cutting blade 9 is inclined, the impact force borne by the cutting blade 9 is divided into two directions, the component force in one direction can enable the cutting blade 9 to continuously rotate, the component force in the other direction can enable the first connecting block 31 to retract into the upper fixed disc 6 and the lower fixed disc 10, the cutting blade 9 is further protected, and once the cutting blade 9 is separated from the hard object, the cutting blade 9 is restored to the original position under the action of the reset mechanism 16 for cutting operation;
The length of cutting blade 9 stretching out of upper fixed disk 6 is adjusted through spacing subassembly 15 for adjust cutting diameter of cutting blade 9, use spacing subassembly 15 to lock cutting blade 9 simultaneously, be used for fixed cutting blade 9, be applicable to high-order cutting, there is not the hard thing to block, fixed cutting blade 9 has higher cutting efficiency for flexible cutting blade 9.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. A cutting assembly for an agricultural cutting machine, comprising a control grab handle (1), characterized in that the cutting assembly is rotationally connected with the control grab handle (1);
The cutting assembly comprises a cutting frame (5), the cutting frame (5) is rotationally connected with the control grab handle (1), and a cutting wheel assembly (4) is arranged on the cutting frame (5);
The cutting wheel assembly (4) comprises an upper fixed disc (6) and a lower fixed disc (10), wherein the upper fixed disc (6) is fixedly connected with the lower fixed disc (10), a fixed cover (8) is fixedly arranged on the upper fixed disc (6), a cutting motor (2) is fixedly arranged on the cutting frame (5), and a moment-increasing mechanism is arranged between the fixed cover (8) and the cutting motor (2) and used for increasing the torque of the cutting wheel assembly (4);
A plurality of first connecting blocks (31) are slidably mounted between the upper fixing plate (6) and the lower fixing plate (10), the lower fixing plate (10) is rotationally connected with the cutting frame (5), a plurality of limiting assemblies (15) matched with the corresponding first connecting blocks (31) are mounted on the upper fixing plate (6), reset mechanisms (16) are mounted between the first connecting blocks (31) and the upper fixing plate (6) and between the first connecting blocks and the lower fixing plate (10), and a cutting blade (9) is mounted on each first connecting block (31) through a blade mounting mechanism (18).
2. The cutting assembly for an agricultural cutting machine according to claim 1, wherein the cutting frame (5) is provided with a protective cover (3) matched with the cutting wheel assembly (4), and the protective cover (3) is in damping rotation connection with the cutting frame (5).
3. The cutting assembly for an agricultural cutting machine according to claim 1, wherein the torque-increasing mechanism comprises a variable speed helical gear (7) fixedly mounted on a fixed cover (8), a helical gear meshed with the variable speed helical gear (7) is fixedly mounted on the driving end of the cutting motor (2), and the diameter of the helical gear is smaller than that of the variable speed helical gear (7).
4. Cutting assembly for an agricultural cutting machine according to claim 1, characterized in that the limit assembly (15) comprises a threaded cylinder (11) fixedly mounted on the upper fixed disk (6), a threaded sleeve (13) is mounted on the threaded cylinder (11) in a threaded rotation manner, a moving ring (14) is mounted on the threaded sleeve (13) in a rotary manner, and the moving ring (14) is in sliding connection with the threaded cylinder (11);
A connecting hinge (17) is fixedly arranged on the movable ring (14), a push-pull rod (24) is rotatably arranged on the connecting hinge (17), a movable plate (23) is rotatably arranged at one end, far away from the push-pull rod (24), of the push-pull rod (24), the movable plate (23) is in sliding connection with an upper fixed disc (6), and a tooth column (19) is arranged on the upper fixed disc (6) through a sliding mechanism;
The damping sliding sleeve (25) is fixedly arranged on the tooth column (19), the damping sliding rod (26) matched with the first connecting block (31) is slidably arranged on the damping sliding sleeve (25), and a stroke amplifying mechanism is arranged between the tooth column (19) and the moving plate (23).
5. The cutting assembly for an agricultural cutting machine according to claim 4, wherein the sliding mechanism comprises fixed blocks (20) fixedly installed on two sides of the tooth column (19), a plurality of limit sliding columns (27) are rotatably installed on each of the fixed blocks (20), and two grooves matched with the corresponding limit sliding columns (27) are formed in the upper fixed disc (6).
6. The cutting assembly for an agricultural cutting machine according to claim 4, wherein the stroke amplifying mechanism comprises a gear (22) rotatably mounted on a moving plate (23), a toothed plate (21) engaged with the gear (22) is fixedly mounted on the upper fixed plate (6), and a plurality of tooth grooves engaged with the gear (22) are formed in the tooth post (19).
7. The cutting assembly for an agricultural cutting machine according to claim 1, wherein the reset mechanism (16) comprises a fixed plate (28) fixedly mounted between an upper fixed plate (6) and a lower fixed plate (10), a plurality of limit telescopic rods (30) are fixedly mounted between the first connecting block (31) and the fixed plate (28), a plurality of reset springs (29) are fixedly mounted between the first connecting block (31) and the fixed plate (28), and each reset spring (29) is sleeved outside the corresponding limit telescopic rod (30).
8. The cutting assembly for an agricultural cutting machine according to claim 4, wherein the blade mounting mechanism (18) comprises a rotating shaft (33) fixedly mounted on the first connecting block (31), a second connecting block (32) is rotatably mounted on the rotating shaft (33), two spring rolls (35) are fixedly mounted between the second connecting block (32) and the rotating shaft (33), and the second connecting block (32) is fixedly connected with the cutting blade (9) through bolts.
9. The cutting assembly for an agricultural cutting machine according to claim 8, wherein the rotating shaft (33) is provided with a slot (34) matched with the damping slide bar (26), two insertion holes are formed in the slot (34), and two insertion rods matched with the corresponding insertion holes are fixedly mounted at one end, close to the rotating shaft (33), of the damping slide bar (26).
10. A method of using a cutting assembly for an agricultural cutting machine, the cutting assembly for an agricultural cutting machine according to any one of claims 1-9, comprising the steps of:
s1, a controller matched with a cutting motor (2) is arranged on a control grab handle (1) and used for controlling the cutting motor (2) to operate and adjusting the output power of the cutting motor (2) according to a cutting scene;
S2, before cutting, adjusting an included angle between the cutting assembly and the control grab handle (1) according to the height of an operator, so that the included angle between the cutting assembly and the control grab handle (1) reaches the most comfortable operation angle of the operator, and keeping the cutting assembly parallel to the cutting surface;
S3, after the angle adjustment is finished, the cutting motor (2) is controlled by the controller to start, the cutting motor (2) drives the upper fixed disc (6) to rotate through the moment-increasing mechanism, centrifugal force generated by rotation drives the first connecting block (31) to slide between the upper fixed disc (6) and the lower fixed disc (10), the blade mounting mechanism (18) on the first connecting block (31) stretches out of the upper fixed disc (6), and the cutting blade (9) can be unfolded from the blade mounting mechanism (18) under the action of centrifugal force, and at the moment, the center points of the cutting blade (9) and the upper fixed disc (6) of the first connecting block (31) are positioned on the same straight line;
S4, when a hard object is blocked in the cutting process, the cutting blade (9) collides with the hard object, the cutting blade (9) is driven to rotate around the blade mounting mechanism (18) under the action of the pressing force, so that the cutting blade (9) is inclined, the impact force between the cutting blade (9) and the hard object is reduced, the cutting blade (9) is used for protecting the cutting blade (9), meanwhile, the cutting blade (9) is inclined, the impact force borne by the cutting blade (9) is divided into two directions, the component force in one direction can enable the cutting blade (9) to continue to rotate, the component force in the other direction can enable the first connecting block (31) to retract into the upper fixed disc (6) and the lower fixed disc (10), and the cutting blade (9) is further protected, and once the cutting blade (9) is separated from the hard object, the cutting blade (9) is restored to the original position under the action of the reset mechanism (16) for cutting operation;
S5, the length of the upper fixing disc (6) of the cutting blade (9) is adjusted through the limiting component (15) for adjusting the cutting diameter of the cutting blade (9), and meanwhile the limiting component (15) is used for locking the cutting blade (9) and fixing the cutting blade (9), so that the cutting blade is suitable for high-position cutting, hard object blocking is avoided, and the fixed cutting blade (9) has higher cutting efficiency relative to the telescopic cutting blade (9).
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| CN202411857368.XA CN119384948B (en) | 2024-12-17 | 2024-12-17 | A cutting assembly for an agricultural cutting machine and its usage method |
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| CN202411857368.XA CN119384948B (en) | 2024-12-17 | 2024-12-17 | A cutting assembly for an agricultural cutting machine and its usage method |
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