Green belt trimmer
Technical Field
The invention relates to equipment for pruning grass, trees, branches and the like, in particular to a green belt pruning machine.
Background
In order to beautify our living environment, green belts are generally planted on isolation belts at two sides and the middle of a road and other places, and in order to keep the green belts tidy and attractive, garden workers are required to regularly trim the green belts. The traditional green belt pruning tool is a tree pruner, which is operated by garden workers in a pure manual way, and has high labor intensity and low working efficiency. In order to improve the working efficiency and reduce the labor intensity, the automatic trimmer is produced at the beginning, but the upper surface and two side surfaces of the green belt are trimmed, when the side surfaces are trimmed, the current automatic trimmer needs a garden worker to turn the whole trimmer sideways, so that the wrist of the garden worker needs to be twisted, even the body needs to be inclined to a certain degree, great discomfort is caused to the garden worker, fatigue is easy to feel after a period of time, the automatic trimmer works in the posture for a long time, and even the injury of the lumbar muscle, the wrist and other parts can be caused.
Disclosure of Invention
The invention aims to provide the green belt trimmer which is comfortable to use, can reduce fatigue and has a simple and light structure.
The technical scheme adopted by the invention for solving the technical problems is as follows: a green belt trimmer comprises a main shell, an auxiliary shell, a blade and a blade rotation driving mechanism, wherein the main shell and the auxiliary shell are separated from each other, the blade rotation driving mechanism comprises a motor, a driving shaft and a blade shaft, the motor is fixedly arranged in the main shell, the driving shaft is respectively in shaft connection with the main shell and the auxiliary shell, the rear end of the driving shaft is coaxially and fixedly connected with an output shaft of the motor, a first bevel gear and a second bevel gear are arranged in the auxiliary shell, the first bevel gear is coaxially and fixedly connected with the front end of the driving shaft, the blade shaft is in shaft connection with the auxiliary shell, the second bevel gear is coaxially and fixedly connected with the blade shaft, the first bevel gear is meshed with the second bevel gear, and the blade is fixedly connected with the blade shaft, and a rotary clutch mechanism is arranged between the auxiliary shell and the driving shaft.
Furthermore, the rotary clutch mechanism comprises a clutch block, the clutch block is sleeved on the driving shaft, a first key block is fixedly arranged on the driving shaft, a key groove used for being matched with the first key block is arranged in the clutch block, a pin is integrally arranged on one surface of the clutch block facing the auxiliary shell, a jack used for being plugged with the pin is arranged on the side wall of the auxiliary shell, a stop ring is fixedly arranged on the side wall of the auxiliary shell, the stop ring is sleeved on the clutch block, a positioning mechanism is arranged between the auxiliary shell and the main shell, when the blade rotates to be used for trimming a green belt, the pin of the clutch block is inserted into the jack of the auxiliary shell, the driving shaft rotates, the auxiliary shell is not moved, when the angle of the blade needs to be adjusted, the pin of the clutch block is separated from the jack of the auxiliary shell, the key groove of the clutch block is matched with the first key block of the driving shaft, and the driving shaft drives the auxiliary shell to rotate together through the clutch block.
Further, positioning mechanism include the connecting rod, the connecting rod with the drive shaft parallel, the rear end of connecting rod with main casing body fixed connection, the lateral wall of vice casing on fixed be provided with the coaxial location bulge loop of drive shaft, the location bulge loop on be provided with coaxial positioning ring groove, the front end of connecting rod insert the positioning ring groove in, the location bulge loop on be provided with a plurality of radial locating holes along circumferencial direction evenly distributed, the locating pin insert one of them radial locating hole and with the connecting rod peg graft fixedly.
Furthermore, an axial telescopic mechanism is arranged on the driving shaft.
Further, the axial telescopic mechanism comprises a hollow shaft, the hollow shaft is coaxially and fixedly connected with an output shaft of the motor, the rear end of the driving shaft coaxially extends into the hollow shaft and is in axial sliding fit with the hollow shaft, a second key block is arranged in the hollow shaft, a sliding groove extending along the axial direction is arranged on the driving shaft, the second key block is positioned in the sliding groove and is in sliding fit with the sliding groove, a positioning screw is screwed on the hollow shaft in the radial direction, the end part of the positioning screw abuts against the circumferential surface of the driving shaft, and the connecting rod is a telescopic rod.
Furthermore, a centering ring is arranged between the driving shaft and the hollow shaft, and the centering ring is coaxially sleeved on the driving shaft; the coaxiality between the driving shaft and the hollow shaft is ensured through the centering ring, and the vibration generated when the trimmer works is reduced.
Further, the motor is a direct current motor, a battery is arranged in the main shell, and the direct current motor is electrically connected with the battery.
Furthermore, the upper end face of the main shell is fixedly provided with a lifting handle, and the rear end of the main shell is fixedly provided with a grabbing handle.
Furthermore, a baffle is fixedly arranged on the auxiliary shell and covers the blade.
Compared with the prior art, the invention has the advantages that because the rotary clutch mechanism is arranged between the auxiliary shell and the driving shaft, when the side surface or the inclined surface of the green belt needs to be trimmed, the auxiliary shell and the driving shaft are relatively fixed through the rotary clutch mechanism, the auxiliary shell can be driven to rotate by a certain angle through the motor, so that the blade is in a side turning state, and the main shell is in a normal state, so that a garden worker does not need to twist a wrist when trimming the side surface or the inclined surface of the green belt, the hand feeling is comfortable, and the fatigue is reduced; the axial telescopic mechanism is arranged on the driving shaft, so that the working length of the blade can be adjusted to adapt to the trimming at different distances, and the use is flexible and convenient; in addition, the whole device has simple and light structure.
Drawings
Fig. 1 is a schematic internal structure diagram according to a first embodiment of the present invention;
FIG. 2 is a top view of a first embodiment of the present invention;
FIG. 3 is an enlarged schematic view at A in FIG. 1;
FIG. 4 is a schematic structural diagram of a clutch block according to a first embodiment of the present invention;
fig. 5 is a schematic structural diagram of a second embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The first embodiment is as follows: as shown in the figure, the green belt pruning machine comprises a main shell 1, an auxiliary shell 2, a blade 3 and a blade rotation driving mechanism, wherein the main shell 1 and the auxiliary shell 2 are separated from each other, a lifting handle 11 is fixedly arranged on the upper end face of the main shell 1, a grabbing handle 12 is fixedly arranged at the rear end of the main shell 1, the blade rotation driving mechanism comprises a motor 4, a driving shaft 5 and a blade shaft 31, the motor 4 is fixedly arranged in the main shell 1, an axial telescopic mechanism is arranged on the driving shaft 5 and comprises a hollow shaft 6, the hollow shaft 6 is in shaft connection with the main shell 1, the hollow shaft 6 is in coaxial fixed connection with an output shaft of the motor 4, the rear end of the driving shaft 5 coaxially extends into the hollow shaft 6 and is in axial sliding fit with the hollow shaft 6, a centering ring 51 is arranged between the driving shaft 5 and the hollow shaft 6, the centering ring 51 is, the driving shaft 5 is provided with a sliding groove 52 extending along the axial direction, the second key block 61 is positioned in the sliding groove 52 and is in sliding fit with the sliding groove 52, the hollow shaft 6 is radially screwed with a positioning screw 62, the end part of the positioning screw 62 is abutted against the circumferential surface of the driving shaft 5, the front end of the driving shaft 5 is in shaft connection with the auxiliary shell 2, a rotary clutch mechanism is arranged between the auxiliary shell 2 and the driving shaft 5, the rotary clutch mechanism comprises a clutch block 7, the clutch block 7 is sleeved on the driving shaft 5, the driving shaft 5 is fixedly provided with a first key block 53, a key groove 71 matched with the first key block 53 is arranged in the clutch block 7, one surface of the clutch block 7 facing the auxiliary shell 2 is integrally provided with a plug pin 72, the side wall of the auxiliary shell 2 is provided with an insertion hole 21 inserted with the plug pin 72, the side wall of the auxiliary shell 2 is fixedly provided with a blocking ring 22, the blocking ring 22 is sleeved on the clutch block 7, the pin 72 of the clutch block 7 is inserted into the jack 21 of the auxiliary housing 2, the driving shaft 5 rotates, the auxiliary housing 2 is not moved, when the angle of the blade 3 needs to be adjusted, the pin 72 of the clutch block 7 is separated from the jack 21 of the auxiliary housing 2, the key groove 71 of the clutch block 7 is matched with the first key block 53 of the driving shaft 5, the driving shaft 5 drives the auxiliary housing 2 to rotate together through the clutch block 7, a positioning mechanism is arranged between the auxiliary housing 2 and the main housing 1, the positioning mechanism comprises a connecting rod 8, the connecting rod 8 is a telescopic rod, the connecting rod 8 is parallel to the driving shaft 5, the rear end of the connecting rod 8 is fixedly connected with the main housing 1, a positioning convex ring 23 coaxial with the driving shaft 5 is fixedly arranged on the side wall of the auxiliary housing 2, a coaxial positioning ring groove 24 is arranged on the positioning convex ring 23, the front end of the connecting rod 8 is inserted into the positioning ring groove 24, a plurality of, the positioning pin 26 is inserted into one of the radial positioning holes 25 and is fixedly inserted into the connecting rod 8, a first bevel gear 9 and a second bevel gear 10 are arranged in the auxiliary housing 2, the first bevel gear 9 is coaxially and fixedly connected with the front end of the driving shaft 5, the blade shaft 31 is in shaft connection with the auxiliary housing 2, the second bevel gear 10 is coaxially and fixedly connected with the blade shaft 31, the first bevel gear 9 is meshed with the second bevel gear 10, the blade 3 is fixedly connected with the blade shaft 31, a baffle plate 27 is fixedly arranged on the auxiliary housing 2, and the baffle plate 27 covers the blade 3.
Example two: as shown in the figure, the green belt pruning machine comprises a main shell 1, an auxiliary shell 2, a blade 3 and a blade rotation driving mechanism, wherein the main shell 1 and the auxiliary shell 2 are separated from each other, a lifting handle 11 is fixedly arranged on the upper end surface of the main shell 1, a grabbing handle 12 is fixedly arranged at the rear end of the main shell 1, the blade rotation driving mechanism comprises a motor 4, a driving shaft 5 and a blade shaft 31, the motor 4 is fixedly arranged in the main shell 1, the driving shaft 5 is respectively coupled with the main shell 1 and the auxiliary shell 2, the rear end of the driving shaft 5 is coaxially and fixedly connected with an output shaft of the motor 4, a rotation clutch mechanism is arranged between the auxiliary shell 2 and the driving shaft 5, the rotation clutch mechanism comprises a clutch block 7, the clutch block 7 is sleeved on the driving shaft 5, a first key block 53 is fixedly arranged on the driving shaft 5, a key groove 71 matched with the first key block 53 is arranged in the clutch block 7, a pin, the side wall of the auxiliary shell 2 is provided with an insertion hole 21 for being inserted with the pin 72, the side wall of the auxiliary shell 2 is fixedly provided with a retaining ring 22, the retaining ring 22 is sleeved on the clutch block 7, when the blade 3 rotates to be used for trimming a green belt, the pin 72 of the clutch block 7 is inserted into the insertion hole 21 of the auxiliary shell 2, the driving shaft 5 rotates, the auxiliary shell 2 is not moved, when the angle of the blade 3 needs to be adjusted, the pin 72 of the clutch block 7 is separated from the insertion hole 21 of the auxiliary shell 2, the key groove 71 of the clutch block 7 is matched with the first key block 53 of the driving shaft 5, the driving shaft 5 drives the auxiliary shell 2 to rotate together through the clutch block 7, a positioning mechanism is arranged between the auxiliary shell 2 and the main shell 1 and comprises a connecting rod 8, the connecting rod 8 is a telescopic rod, the connecting rod 8 is parallel to the driving shaft 5, the rear end of the connecting rod 8 is fixedly connected with the main shell 1, the side wall, the positioning convex ring 23 is provided with a coaxial positioning ring groove 24, the front end of the connecting rod 8 is inserted into the positioning ring groove 24, the positioning convex ring 23 is provided with a plurality of radial positioning holes 25 which are uniformly distributed along the circumferential direction, the positioning pin 26 is inserted into one of the radial positioning holes 25 and is fixedly inserted into the connecting rod 8, the auxiliary shell 2 is internally provided with a first bevel gear 9 and a second bevel gear 10, the first bevel gear 9 is fixedly connected with the front end of the driving shaft 5 coaxially, the blade shaft 31 is connected with the auxiliary shell 2 in a shaft-to-shaft manner, the second bevel gear 10 is fixedly connected with the blade shaft 31 coaxially, the first bevel gear 9 is meshed with the second bevel gear 10, the blade 3 is fixedly connected with the blade shaft 31, the auxiliary shell 2 is fixedly provided with a baffle plate 27.
In the first and second embodiments, the motor 4 is a dc motor, the battery 13 is disposed in the main housing 1, and the dc motor is electrically connected to the battery 13.
In the above embodiment, the process of adjusting the angle of the blade 3 is as follows: the clutch block 7 is pulled out from the auxiliary shell 2, the pin 72 of the clutch block 7 is separated from the jack 21 of the auxiliary shell 2, and the key slot 71 of the clutch block 7 is matched with the first key block 53 of the driving shaft 5, then the motor 4 is controlled to drive the driving shaft 5 to rotate for a certain angle, the driving shaft 5 drives the clutch block 7 to rotate, the clutch block 7 drives the auxiliary shell 2 to rotate together through the retaining ring 22, meanwhile, the positioning pin 26 on the positioning convex ring 23 is pulled out, the positioning convex ring 23 rotates synchronously with the auxiliary shell 2, the front end of the connecting rod 8 is in sliding fit with the positioning ring slot 24 in the positioning convex ring 23, when the auxiliary shell 2 rotates in place, namely the angle of the blade 3 is adjusted in place, the motor 4 stops working, the positioning pin 26 is inserted into the radial positioning hole 25 of the positioning convex ring 23 and is fixedly inserted with the connecting rod 8, then the clutch block 7 is pushed, the key slot 71 of the clutch block 7 slides away from the first, the pins 72 of the clutch block 7 are inserted into the insertion holes 21 of the auxiliary shell 2, at this time, the motor 4 drives the driving shaft 5 to rotate, the auxiliary shell 2 is not moved, the driving shaft 5 drives the blade 3 to rotate through the meshing of the first bevel gear 9 and the second bevel gear 10, and the green belt is trimmed.