CN113994826B - Hedge trimming vehicle and split hedge trimming cutter thereof - Google Patents
Hedge trimming vehicle and split hedge trimming cutter thereof Download PDFInfo
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- CN113994826B CN113994826B CN202111108709.XA CN202111108709A CN113994826B CN 113994826 B CN113994826 B CN 113994826B CN 202111108709 A CN202111108709 A CN 202111108709A CN 113994826 B CN113994826 B CN 113994826B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
- A01G3/04—Apparatus for trimming hedges, e.g. hedge shears
- A01G3/0426—Machines for pruning vegetation on embankments and road-sides
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
- A01G3/04—Apparatus for trimming hedges, e.g. hedge shears
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Abstract
The invention discloses a hedge trimming vehicle and a split hedge trimming cutter thereof, wherein the split hedge trimming cutter comprises a main cutter head, an auxiliary cutter head arranged on the outer side of the main cutter head, an active obstacle avoidance mechanism connected with the main cutter head and a passive obstacle avoidance mechanism connected with the auxiliary cutter head, the active obstacle avoidance mechanism is used for driving the main cutter head to rotate to avoid an obstacle when the obstacle is positioned on the working path of the main cutter head and driving the main cutter head to rotate and reset after avoiding the obstacle, the auxiliary cutter head is hinged with the main cutter head so as to self-adaptively rotate and bypass the obstacle relative to the main cutter head when the auxiliary cutter head contacts the obstacle, and the passive obstacle avoidance mechanism is used for reversely pushing the auxiliary cutter head to reset after the auxiliary cutter head rotates to bypass the obstacle. The split hedgerow pruning cutter provided by the invention can adapt to various working conditions, can flexibly bypass obstacles at different positions and distances, and can keep rotating along with the obstacles in the obstacle avoidance process of the auxiliary cutter head, so that the pruning effect is ensured.
Description
Technical Field
The invention relates to the technical field of hedge trimming, in particular to a split type hedge trimming cutter and a hedge trimming vehicle adopting the split type hedge trimming cutter.
Background
Along with the higher urbanization degree of China, the greening facilities beside urban roads are increased day by day, and the greening facilities are mostly shrubs or short plants which grow every year, so that regular pruning is needed. With the rise of labor cost and the low efficiency of manual trimming, a special hedge trimming vehicle is gradually adopted for mechanical trimming.
However, since there are obstacles such as trunks and poles in the greening vegetation, in order to protect the trimming cutter and avoid damaging objects other than the hedge, the hedge trimmer needs to be equipped with an obstacle avoidance device to make the cutter flexibly avoid the obstacles. In contrast, the conventional obstacle avoidance device mainly has two working modes: the first is an active obstacle avoidance mode, a cutter is driven by driving parts such as a hydraulic cylinder and the like to integrally rotate to avoid an obstacle, but a certain reaction time is required in the obstacle avoidance process, the driving speed of the hedge trimmer is greatly limited, when the speed of the hedge trimmer is too high, the cutter can directly collide with the obstacle without completely rotating in place, so that the serious rigid collision to accessories such as the cutter and the hydraulic cylinder is caused, the damage is caused, secondly, the reset action of the cutter after the cutter passes over the obstacle is also delayed, part of hedges cannot be trimmed in the reset process, and the trimming effect is influenced; the second is a passive obstacle avoidance mode, the cutter is hinged with the vehicle body and a spring reset structure is arranged on the cutter, when the cutter touches the obstacle, the cutter can be driven by the obstacle to rotationally bypass the obstacle, and the cutter is elastically reset by the spring after the obstacle is passed over, but because the cutter is heavy, the obstacle avoidance mode needs to be provided with a spring with large elasticity for resetting, so that a large acting force is generated to drive the cutter to reversely push the obstacle in the process of passing over the obstacle, the cutter and the obstacle are not convenient, and the cutter can be pushed back to the original position by the spring with large elasticity in the reset process of the cutter, so that the cutter vibrates back and forth, and the service life of the cutter is influenced.
Disclosure of Invention
The invention mainly provides a split type hedgerow trimming cutter, which aims to solve the technical problem that the existing hedgerow trimming cutter cannot avoid obstacles well.
The invention also provides a hedge trimming vehicle which adopts the hedge trimming cutter.
According to one aspect of the invention, a split hedge trimming cutter is provided, which comprises a main cutter disc, an auxiliary cutter disc, an active obstacle avoidance mechanism and a passive obstacle avoidance mechanism, wherein the auxiliary cutter disc is arranged on the outer side of the main cutter disc in parallel with the main cutter disc, the active obstacle avoidance mechanism is connected with the main cutter disc, the passive obstacle avoidance mechanism is connected with the auxiliary cutter disc, the active obstacle avoidance mechanism is used for driving the main cutter disc to rotate to avoid an obstacle when the obstacle is in a working path of the main cutter disc, and driving the main cutter disc to rotate and reset after avoiding the obstacle, the auxiliary cutter disc is hinged with the main cutter disc so as to bypass the obstacle in a self-adaptive rotation manner relative to the main cutter disc when the auxiliary cutter disc contacts the obstacle, and the passive obstacle avoidance mechanism is used for reversely pushing the auxiliary cutter disc to reset after the auxiliary cutter disc rotates to bypass the obstacle.
Preferably, the passive obstacle avoidance mechanism comprises a reset cylinder and a pressure stabilizing assembly, a piston rod of the reset cylinder is connected with the auxiliary cutter head, and the pressure stabilizing assembly is connected with a cylinder body of the reset cylinder and used for adjusting the gas content in the cylinder body, so that the gas pressure in the cylinder body is kept the same when the piston rod is located at any stroke.
Preferably, the pressure stabilizing assembly comprises a pressure reducing valve and a quick exhaust valve, an air inlet of the pressure reducing valve is used for being connected with an air source, an air outlet of the pressure reducing valve is connected with the quick exhaust valve, the quick exhaust valve is connected with the cylinder body, the cylinder body is communicated with the pressure reducing valve when the air pressure in the cylinder body is lower than the output air pressure of the pressure reducing valve, and the cylinder body is communicated with the atmosphere when the air pressure in the cylinder body is higher than the output air pressure of the pressure reducing valve.
Further, the pressure stabilizing assembly further comprises a solenoid valve arranged between the pressure reducing valve and the air source.
Preferably, the initiative obstacle avoidance mechanism includes detection device and with the drive arrangement that detection device electricity is connected, detection device is used for surveying the barrier and judges whether the barrier is located on the working path of main blade disc, drive arrangement with main blade disc is connected, drive arrangement is used for when the barrier is located on the working path of main blade disc drive main blade disc rotates ground and avoids the barrier and drives after avoiding the barrier main blade disc rotates and resets.
Preferably, the detection device includes a distance sensor and a calculation chip, the distance sensor is configured to detect a distance between an obstacle and the main cutter disc and feed back a detection result to the calculation chip, and the calculation chip is configured to calculate, according to the detection result, an angle that the main cutter disc needs to rotate to avoid the obstacle, and control the driving device to drive the main cutter disc to rotate according to the calculated angle.
Further, the driving device comprises a hydraulic motor or a hydraulic oil cylinder connected with the main cutter head.
Furthermore, split type hedge trimmer cutter still include with first spacing wheel that the main cutter head is connected and with the spacing wheel of second that vice cutter head is connected, the spacing wheel butt of second first spacing wheel and when vice cutter head is relative when the main cutter head rotates along the circumferential direction of first spacing wheel.
Furthermore, the periphery of one of the first limiting wheel and the second limiting wheel is provided with a limiting sliding groove, and the periphery of the other limiting wheel is provided with a limiting flange which is embedded in the limiting sliding groove and can slide along the limiting sliding groove.
According to another aspect of the present invention, there is also provided a hedge trimmer comprising a vehicle body and the split hedge trimmer cutter, wherein the split hedge trimmer cutter is mounted on the vehicle body.
The invention has the following beneficial effects:
1. the split type hedge pruning cutter provided by the invention is integrally divided into the main cutter disc and the auxiliary cutter disc, the auxiliary cutter disc is pushed by an obstacle under the coordination of the passive obstacle avoidance mechanism to realize self-adaptive rotation passive obstacle avoidance, when the obstacle is only on the working path of the auxiliary cutter disc, the obstacle avoidance can be realized without actively driving the main cutter disc to rotate, the auxiliary cutter disc can be kept attached to the obstacle in the obstacle avoidance process, the pruning effect is ensured, in addition, the auxiliary cutter disc is lighter in weight, the auxiliary cutter disc is not required to be provided with a larger elastic reset assembly for resetting, the cutter disc is effectively protected, when the obstacle is positioned on the working path of the main cutter disc, the main cutter disc with larger weight is actively driven by the active obstacle avoidance mechanism to rotate by a preset angle for obstacle avoidance, the obstacle avoidance stability is ensured, at the moment, the auxiliary cutter disc can also keep the state of being attached to the obstacle in a passive obstacle avoidance mode to avoid the obstacle, therefore, the split type hedge pruning cutter can adapt to various working conditions, the obstacles in different positions and distances can be flexibly avoided from being attached to the front and back of the obstacle, and the both sides of the obstacle, and the pruning effect is ensured.
2. In the split hedge trimming cutter, the reset cylinder driving the auxiliary cutter disc to reset is provided with the pressure stabilizing assembly, so that the air pressure in the cylinder body is kept the same when the piston rod of the reset cylinder is positioned at any stroke, namely the acting force of the reset cylinder on the auxiliary cutter disc is kept the same when the auxiliary cutter disc is positioned at any position, compared with a spring structure, the situation that the elastic force is larger along with the larger compression amount is avoided, the acting force between the cutter disc and an obstacle is prevented from being overlarge, the better buffering protection effect is realized while the resetting of the auxiliary cutter disc is effectively realized, the cutter disc and the obstacle are better protected, and the damage caused when the cutter disc and the obstacle collide with each other is avoided.
3. In the active obstacle avoidance mechanism of the split type hedge trimming cutter, the rotation angle of the main cutter head can be controlled according to the distance between the obstacle and the main cutter head through the detection device, so that the main cutter head can accurately rotate to the position where the obstacle is just avoided, the obstacle avoidance effect and the obstacle avoidance speed of the main cutter head are improved, the main cutter head is prevented from directly colliding with the obstacle, meanwhile, the gap between the main cutter head and the obstacle is reduced, the situation that part of hedges cannot be trimmed in the obstacle avoidance process is avoided, and the trimming effect is further ensured.
4. In the split hedge pruning cutter provided by the invention, the auxiliary cutter head rotates along the main cutter head at high precision under the matching limit of the second limit wheel and the first limit wheel, so that the stability of the auxiliary cutter head is effectively improved, the auxiliary cutter head is prevented from shaking or even misplacing in the obstacle avoidance process, and the obstacle avoidance effect and the pruning effect of the auxiliary cutter head are ensured.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a front view of a split hedge trimmer cutter provided by an embodiment of the present invention;
FIG. 2 is a schematic structural view of a passive obstacle avoidance mechanism in the split hedge trimmer shown in FIG. 1;
FIG. 3 is a diagram showing the variation of the auxiliary blade disc of the split hedge trimmer shown in FIG. 1 during rotation to avoid obstacles;
FIG. 4 is a diagram showing a state of the main blade of the split hedge trimmer shown in FIG. 1 when rotating to avoid obstacles;
FIG. 5 is a schematic structural view of a first limiting wheel and a second limiting wheel of the split hedge trimmer of FIG. 1;
fig. 6 is a schematic structural view of another embodiment of the first and second limiting wheels of the split hedge trimmer of fig. 1.
Illustration of the drawings:
1. a split hedge trimmer; 11. a main cutter head; 12. an auxiliary cutter head; 13. an active obstacle avoidance mechanism; 131. a detection device; 1311. a distance sensor; 132. a drive device; 1321. a hydraulic cylinder; 14. a passive obstacle avoidance mechanism; 141. a reset cylinder; 1411. a piston rod; 1412. a cylinder body; 142. a voltage stabilizing assembly; 1421. a pressure reducing valve; 1422. a quick discharge valve; 1423. an electromagnetic valve; 15. a first limit wheel; 151. a limiting chute; 16. a second limiting wheel; 161. a limiting flange; 2. an obstacle; 3. a gas source; 31. an air pump; 32. a gas tank; 33. and (4) a valve.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.
Fig. 1 to 6 collectively show a split type hedge trimmer according to an embodiment of the present invention, which is used for being mounted on a hedge trimmer and automatically trimming greening vegetation on the roadside during the driving of a vehicle, and has a good obstacle avoidance effect, so that the trimmer, a street lamp, a telegraph pole, and other obstacles can be effectively protected, and the trimming effect can be ensured.
Please combine fig. 1 and fig. 2, the split type hedge trimmer 1 includes a main cutter head 11, an auxiliary cutter head 12, an active obstacle avoidance mechanism 13 and a passive obstacle avoidance mechanism 14, the main cutter head 11 is used for being connected with the body of the hedge trimmer, the auxiliary cutter head 12 and the main cutter head 11 are arranged side by side outside the main cutter head 11, that is, the auxiliary cutter head 12 is arranged on one side of the body away from the main cutter head 11, the active obstacle avoidance mechanism 13 is connected with the main cutter head 11, the active obstacle avoidance mechanism 13 drives the main cutter head 11 to rotate and avoid the obstacle 2 and drives the main cutter head 11 to rotate and reset after avoiding the obstacle 2 when the obstacle 2 (shown in fig. 3 and fig. 4) is located on the working path of the main cutter head 11. Vice blade disc 12 with main blade disc 11 is articulated, in order vice blade disc 12 is relative when contacting barrier 2 main blade disc 11 self-adaptation rotates and bypasses barrier 2, passive obstacle avoidance mechanism 14 with vice blade disc 12 is connected and is used for vice blade disc 12 rotates and bypasses behind the barrier 2 reverse promotion vice blade disc 12 resets.
Further, the main cutterhead 11 includes a first trimming motor and a first trimming blade connected to and driven to rotate by the first trimming motor, the secondary cutterhead 12 includes a second trimming blade connected to and driven to rotate by the first trimming motor through a related transmission structure, and a second trimming motor may also be disposed on the secondary cutterhead 12 to drive the second trimming blade to rotate, and the split type hedge trimming blade 1 completes hedge trimming operation through cooperation of the first trimming blade and the second trimming blade.
As shown in fig. 3, when the obstacle 2 is located on the working path of the secondary cutterhead 12, the secondary cutterhead 12 can contact the obstacle 2 during the forward driving of the hedge trimming vehicle and can adaptively rotate to bypass the obstacle 2 under the pushing of the obstacle 2, and after the secondary cutterhead 12 completely passes over the obstacle 2, the secondary cutterhead 12 is reset under the action of the passive obstacle avoidance mechanism 14, so that the hedge trimming operation after the obstacle 2 can be continuously completed.
It should be noted that, because the auxiliary cutter head 12 rotates adaptively relative to the obstacle 2 and can be reset in time when the obstacle is avoided, the auxiliary cutter head 12 can keep a state of being attached to the obstacle 2 in a process of bypassing the obstacle 2, regions which cannot be trimmed on the front side and the rear side of the obstacle 2 are avoided, and a trimming effect is ensured. Secondly, compare the drive split type hedge trimming cutter 1 wholly carries out the structure that resets, only drives vice blade disc 12 need not to provide great effort that resets when reseing, consequently passive obstacle avoidance mechanism 14 need not to be equipped with the great spring structure of elasticity, avoids the spring structure to produce too big elasticity and right by the compression in-process vice blade disc 12 perhaps obstacle 2 causes destruction, effectively protects the blade disc.
As shown in fig. 4, when the obstacle 2 is located on the working path of the main cutter 11, the main cutter 11 can be driven by the active obstacle avoidance mechanism 13 to rotate by a preset angle and then avoid the obstacle, so as to ensure that the main cutter 11 is driven by sufficient driving force to rotate, and the main cutter 11 is driven to reset in time after the main cutter 11 passes over the obstacle 2, and in the process of avoiding the obstacle by the main cutter 11, the auxiliary cutter 12 can keep the state of being attached to the obstacle 2 by the above-mentioned passive obstacle avoidance manner to avoid the obstacle 2, thereby ensuring the trimming effect.
In summary, the split hedge pruning tool 1 splits the whole structure into the main cutter head 11 and the auxiliary cutter head 12, and the main cutter head 11 and the auxiliary cutter head 12 can flexibly bypass obstacles 2 at different positions and distances by using the active obstacle avoidance mechanism 13 and the passive obstacle avoidance mechanism 14 in a matching manner, so that the split hedge pruning tool can adapt to various working conditions, and the obstacle avoidance effect and the pruning effect are ensured.
As shown in fig. 2, the passive obstacle avoidance mechanism 14 includes a reset cylinder 141 and a pressure stabilizing assembly 142, the reset cylinder 141 includes a piston rod 1411 and a cylinder body 1412, one end of the piston rod 1411 is connected to the secondary cutter disc 12, the other end of the piston rod passes through the cylinder body 1412 and provides thrust for the secondary cutter disc 12 under the action of the air pressure in the cylinder body 1412, and the pressure stabilizing assembly 142 is connected to the cylinder body 1412 and is used for adjusting the gas content in the cylinder body 1412, so that the air pressure in the cylinder body 1412 is kept the same when the piston rod 1411 is located at any stroke.
Consequently, through steady voltage subassembly 142 is stable atmospheric pressure in the cylinder body 1412 can make when vice blade disc 12 rotates optional position the cylinder 141 that resets is right vice blade disc 12's thrust keeps the same, compares the big circumstances that elasticity is big when spring structure can not appear along with the compressive capacity is big more, avoids effort between vice blade disc 12 and the barrier 2 is too big, effectively realizes realize when vice blade disc 12 resets the buffering protection effect of realization preferred, protects blade disc and barrier better, avoids blade disc and barrier two to take place to damage when colliding each other.
Further, the pressure stabilizing assembly 142 includes a pressure reducing valve 1421 and a quick exhaust valve 1422, an air inlet of the pressure reducing valve 1421 is used for being connected with the air source 3, and an air outlet of the pressure reducing valve 1421 is connected with the quick exhaust valve 1422, so as to adjust the high-pressure air output by the air source 3 to a fixed pressure. The quick-release valve 1422 is connected to the cylinder 1412 and connects the cylinder 1412 to the pressure-reducing valve 1421 when the air pressure in the cylinder 1412 is lower than the output air pressure of the pressure-reducing valve 1421, so that the pressure-reducing valve 1421 raises the air pressure in the cylinder 1421 for the input air of the cylinder 1412, thereby ensuring sufficient reset acting force. Secondly, the quick exhaust valve 1422 can also communicate the cylinder body 1412 with the atmosphere when the air pressure in the cylinder body 1412 is higher than the output air pressure of the pressure reducing valve 1421, so as to quickly exhaust the air in the cylinder body 1412 to the atmosphere, timely reduce the air pressure in the cylinder body 1412, and avoid generating an excessive thrust on the secondary cutter disc 12.
Furthermore, the pressure stabilizing assembly 142 further includes a solenoid valve 1423 disposed between the pressure reducing valve 1421 and the air source 3, and when the auxiliary cutter head 12 does not need to be operated to avoid obstacles, the pressure reducing valve 1421 and the air source 3 can be disconnected by the solenoid valve 1423, so that the cylinder 1412 maintains a fixed air pressure, and the waste of the air source 3 is avoided.
In this embodiment, in order to reduce the weight of the split hedge trimmer 1 and improve the obstacle avoidance performance, the air source 3 is provided by the hedge trimmer, and may specifically include an air pump 31, an air tank 32, a valve 33, and other air path fittings that are connected in sequence, the air tank 32 is inflated by the air pump 31, and the valve 33 controls the connection or the disconnection between the air tank 32 and the pressure stabilizing assembly 142, so that the air with a certain air pressure may be provided to the pressure stabilizing assembly 142. In other embodiments, the air supply 3 can be disposed on the split type hedge trimmer 1, so that the overall performance is stronger, and the air supply does not need to be additionally disposed on the hedge trimmer, so that the split type hedge trimmer 1 can be adapted to more types of hedge trimmers.
As shown in fig. 1, the active obstacle avoidance mechanism 13 includes a detection device 131 and a driving device 132 electrically connected to the detection device 131, the detection device 131 is configured to detect an obstacle 2 and determine whether the obstacle 2 is located on a working path of the main cutter head 11, and the driving device 132 is connected to the main cutter head 11 and configured to drive the main cutter head 11 to rotationally avoid the obstacle 2 when the obstacle 2 is located on the working path of the main cutter head 11, and drive the main cutter head 11 to rotationally reset after avoiding the obstacle 2.
Preferably, the detecting device 131 includes a distance sensor 1311 and a calculating chip (not shown, the same applies below), the distance sensor 1311 is configured to detect a distance between the obstacle 2 and the main cutter 11 and feed back a detection result to the calculating chip, the calculating chip is configured to calculate an angle at which the main cutter 11 avoids the obstacle 2 and needs to rotate according to the detection result, and calculate a time point at which the main cutter 11 accurately avoids the obstacle 2 according to a real-time vehicle speed of the hedge trimmer, so that an instruction is sent according to the calculated rotation angle and time point to control the driving device 132 to drive the main cutter 11 to rotate according to the calculated time point and angle, thereby realizing accurate avoidance of the obstacle 2.
The detection device 131 can control the rotation angle of the main cutter head 11 according to the distance between the obstacle 2 and the main cutter head 11, so that the main cutter head 11 can rotate accurately to a position where the obstacle 2 is just avoided, the obstacle avoiding effect and the obstacle avoiding speed of the main cutter head 11 are improved, the main cutter head 11 is prevented from directly colliding with the obstacle 2, meanwhile, the gap between the main cutter head 11 and the obstacle 2 is reduced, the situation that a part of hedges cannot be pruned in the obstacle avoiding process is avoided, and the pruning effect is further ensured.
Further, detection device 131 still includes camera and/or laser radar, through camera and/or laser radar strengthen surveying barrier 2 and accurate judgement the shape, size or the kind of barrier 2 judge whether this barrier 2 belongs to the object that needs to dodge, and further detect barrier 2 with interval between the main blade disc 11, for the computing chip provides more meticulous reliable detection data, thereby further promotes and keeps away the barrier effect.
Further, the driving device 132 comprises a hydraulic oil cylinder 1321 connected with the main cutter disc 11, and since the main cutter disc 11 needs to drive the auxiliary cutter disc 12 to rotate synchronously while rotating to avoid the obstacle, at this time, the main cutter disc 11 can provide sufficient power by driving through the hydraulic oil cylinder 1321, so that the rotation is ensured to be in place, and the rotation angle of the main cutter disc 11 can be accurately controlled, so that the rotation effect is better. In other embodiments, the hydraulic ram 1321 may be replaced with a hydraulic motor, a servo motor, or other drive.
As shown in fig. 5, the split type hedge trimmer 1 further includes a first limit wheel 15 and a second limit wheel 16, the first limit wheel 15 is connected with the main cutterhead 11, the second limit wheel 16 is connected with the auxiliary cutterhead 12, the second limit wheel 16 is abutted against the edge of the first limit wheel 15 and the auxiliary cutterhead 12 is opposite to the main cutterhead 11 and moves along the periphery of the first limit wheel 15 when rotating, namely, the auxiliary cutterhead 12 is in the second limit wheel 16 is in cooperation with the first limit wheel 15 and moves along the main cutterhead 11 at high precision, the stability of the auxiliary cutterhead 12 is effectively improved, the auxiliary cutterhead 12 is prevented from shaking or even misplacing in the obstacle avoidance process, and the obstacle avoidance effect and the trimming effect of the auxiliary cutterhead 12 are ensured.
Preferably, the periphery of the first limit wheel 15 is provided with a limit sliding groove 151, the periphery of the second limit wheel 16 is provided with a limit flange 161 which is embedded in the limit sliding groove 151 and can be followed by the limit sliding groove 151, and the accuracy and the stability of the rotation of the auxiliary cutter head 12 are further improved by the match sliding of the limit flange 161 and the limit sliding groove 151.
In other embodiments, the limiting sliding groove 151 may also be disposed on the second limiting wheel 16, and accordingly, the limiting flange 161 is disposed on the first limiting wheel 15 at this time, so that the limiting function between the first limiting wheel 15 and the second limiting wheel 16 can also be achieved.
As shown in fig. 6, in another embodiment, both the first limit wheel 15 and the second limit wheel 16 may be provided as gears, and the first limit wheel 15 and the second limit wheel 16 are engaged with each other, at this time, the first limit wheel 15 may rotate along its axis with respect to the main cutter 11, the second limit wheel 16 may rotate along its axis with respect to the sub cutter 12, and when the sub cutter 12 rotates with respect to the main cutter 11, the second limit wheel 16 rotates along the first limit wheel 15, which may also improve the accuracy and stability of the rotation of the sub cutter 12 with respect to the main cutter 11.
According to another aspect of the present invention, a hedge trimmer (not shown) is further provided, which includes a body and the split hedge trimmer 1, wherein the split hedge trimmer 1 is mounted on the body, and the body drives the split hedge trimmer 1 to move to trim green vegetation on the roadside, so as to better avoid the obstacle 2 and provide a better trimming effect, and improve the product competitiveness of the hedge trimmer.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A split type hedge pruning cutter is characterized by comprising a main cutter head (11), an auxiliary cutter head (12) which is arranged on the outer side of the main cutter head (11) side by side with the main cutter head (11), an active obstacle avoidance mechanism (13) which is connected with the main cutter head (11) and a passive obstacle avoidance mechanism (14) which is connected with the auxiliary cutter head (12),
the active obstacle avoidance mechanism (13) is used for driving the main cutter head (11) to rotate to avoid the obstacle (2) when the obstacle (2) is positioned on the working path of the main cutter head (11) and driving the main cutter head (11) to rotate and reset after avoiding the obstacle (2),
the auxiliary cutter head (12) is hinged with the main cutter head (11) so as to bypass the obstacle (2) in a self-adaptive rotating manner relative to the main cutter head (11) when the auxiliary cutter head (12) contacts the obstacle (2),
the passive obstacle avoidance mechanism (14) is used for reversely pushing the auxiliary cutter head (12) to reset after the auxiliary cutter head (12) rotates to bypass the obstacle (2);
the split hedge pruning cutter further comprises a first limiting wheel (15) connected with the main cutter head (11) and a second limiting wheel (16) connected with the auxiliary cutter head (12), wherein the second limiting wheel (16) is abutted to the first limiting wheel (15) and moves along the circumferential direction of the first limiting wheel (15) when the auxiliary cutter head (12) rotates relative to the main cutter head (11);
the periphery of one of the first limiting wheel (15) and the second limiting wheel (16) is provided with a limiting sliding groove (151), and the periphery of the other limiting wheel is provided with a limiting flange (161) which is embedded in the limiting sliding groove (151) and used for sliding along the limiting sliding groove (151).
2. The split hedge trimmer cutter according to claim 1, wherein the passive obstacle avoidance mechanism (14) comprises a reset cylinder (141) and a pressure stabilizing assembly (142), a piston rod (1411) of the reset cylinder (141) is connected with the auxiliary cutter head (12), and the pressure stabilizing assembly (142) is connected with a cylinder body (1412) of the reset cylinder (141) and is used for adjusting the gas content in the cylinder body (1412), so that the gas pressure in the cylinder body (1412) is kept the same when the piston rod (1411) is located at any stroke.
3. The split hedge trimmer according to claim 2, characterized in that the pressure stabilizing assembly (142) comprises a pressure reducing valve (1421) and a quick exhaust valve (1422), the inlet of the pressure reducing valve (1421) is connected to the air source (3), the outlet of the pressure reducing valve (1421) is connected to the quick exhaust valve (1422),
the quick-release valve (1422) is connected with the cylinder body (1412) and conducts the cylinder body (1412) with the pressure reducing valve (1421) when the air pressure in the cylinder body (1412) is lower than the output air pressure of the pressure reducing valve (1421), and conducts the cylinder body (1412) with the atmosphere when the air pressure in the cylinder body (1412) is higher than the output air pressure of the pressure reducing valve (1421).
4. The split hedge trimmer according to claim 3, characterized in that the pressure stabilizing assembly (142) further comprises a solenoid valve (1423) for being disposed between the pressure reducing valve (1421) and the air supply (3).
5. The split type hedge trimming cutter according to claim 1, wherein the active obstacle avoidance mechanism (13) comprises a detection device (131) and a driving device (132) electrically connected to the detection device (131), the detection device (131) is configured to detect an obstacle (2) and determine whether the obstacle (2) is located on a working path of the main cutter head (11), the driving device (132) is connected to the main cutter head (11), and the driving device (132) is configured to drive the main cutter head (11) to rotationally avoid the obstacle (2) and drive the main cutter head (11) to rotationally reset after avoiding the obstacle (2) when the obstacle (2) is located on the working path of the main cutter head (11).
6. The split type hedge trimming cutter according to claim 5, wherein the detecting device (131) comprises a distance sensor (1311) and a calculating chip, the distance sensor (1311) is used for detecting the distance between the obstacle (2) and the main cutter head (11) and feeding back the detection result to the calculating chip, and the calculating chip is used for calculating the angle of the main cutter head (11) to the obstacle (2) to rotate according to the detection result and controlling the driving device (132) to drive the main cutter head (11) to rotate according to the calculated angle.
7. The split hedge trimmer according to claim 5 or 6, characterized in that the drive means (132) comprises a hydraulic ram (1321) or a hydraulic motor connected to the main cutterhead (11).
8. A hedge trimmer comprising a body, and further comprising a split hedge trimmer according to any one of claims 1 to 7, the split hedge trimmer being mounted to the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111108709.XA CN113994826B (en) | 2021-09-22 | 2021-09-22 | Hedge trimming vehicle and split hedge trimming cutter thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111108709.XA CN113994826B (en) | 2021-09-22 | 2021-09-22 | Hedge trimming vehicle and split hedge trimming cutter thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113994826A CN113994826A (en) | 2022-02-01 |
| CN113994826B true CN113994826B (en) | 2022-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202111108709.XA Active CN113994826B (en) | 2021-09-22 | 2021-09-22 | Hedge trimming vehicle and split hedge trimming cutter thereof |
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| US4697405A (en) * | 1985-12-24 | 1987-10-06 | Dewitt Carl | Mowing apparatus |
| CN105557337A (en) * | 2015-12-24 | 2016-05-11 | 广西大学 | Obstacle-avoiding mechanism of hedge clipping knife rest |
| CN110915457A (en) * | 2019-11-25 | 2020-03-27 | 长沙中联重科环境产业有限公司 | Hedgerow trimming device and control method |
| CN111201899A (en) * | 2020-01-10 | 2020-05-29 | 兰州理工大学 | Weeding obstacle avoidance mechanism and weeding obstacle avoidance robot |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4697405A (en) * | 1985-12-24 | 1987-10-06 | Dewitt Carl | Mowing apparatus |
| CN105557337A (en) * | 2015-12-24 | 2016-05-11 | 广西大学 | Obstacle-avoiding mechanism of hedge clipping knife rest |
| CN110915457A (en) * | 2019-11-25 | 2020-03-27 | 长沙中联重科环境产业有限公司 | Hedgerow trimming device and control method |
| CN111201899A (en) * | 2020-01-10 | 2020-05-29 | 兰州理工大学 | Weeding obstacle avoidance mechanism and weeding obstacle avoidance robot |
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