CN111758411A

CN111758411A - Branch pruning device capable of switching cutters and preventing branches from falling

Info

Publication number: CN111758411A
Application number: CN202010787974.4A
Authority: CN
Inventors: 侯星宇
Original assignee: Taizhou Sethi Technology Co ltd
Current assignee: Taizhou Sethi Technology Co ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2020-10-13

Abstract

The invention discloses a branch pruning device capable of switching cutters and preventing branches from falling, which comprises a main body, wherein a telescopic rod cavity with a downward opening is arranged at the center of the lower end surface of the main body, support rod cavities with downward openings are symmetrically arranged on the left side and the right side of the telescopic rod cavity, telescopic mechanisms are arranged in the telescopic rod cavity and on the upper side of the telescopic rod cavity, a handle is arranged on the lower side of the main body, and the telescopic mechanisms are connected between the upper wall of the support rod cavity and the upper end surface of the handle. Retracting the tool prevents greater damage from occurring.

Description

Branch pruning device capable of switching cutters and preventing branches from falling

Technical Field

The invention relates to the field of branch pruning equipment, in particular to a branch pruning device capable of switching cutters and preventing branches from falling.

Background

In our work process of carrying out the branch pruning, can produce the condition that a large amount of branches dropped, the condition of injury to people or things around can appear when these branches drop moreover, and general branch pruning equipment has no way to prune it when being difficult to meet higher branch, can't switch or can't make it unable more extensive condition of coping in the in-process of work of switching the tool bit messenger when the tool bit of taking is single to make it meet the branch of different thicknesses, also can't deal with to some unexpected circumstances of appearing. The present invention sets forth a device that solves the above problems.

Disclosure of Invention

The technical problem is as follows:

ordinary branch pruning equipment can only deal with the branch of single thickness and can't be directed against the branch of higher department to can not do nothing to the branch that drops in the pruning process.

In order to solve the problems, the branch pruning device capable of switching the cutters and preventing branches from falling comprises a main body, wherein a telescopic rod cavity with a downward opening is arranged at the center of the lower end face of the main body, support rod cavities with downward openings are symmetrically arranged on the left side and the right side of the telescopic rod cavity, telescopic mechanisms are arranged in the telescopic rod cavity and on the upper side of the telescopic rod cavity, a handle is arranged on the lower side of the main body, the telescopic mechanisms are connected between the upper wall of the support rod cavity and the upper end face of the handle, the telescopic mechanisms are used for controlling the extension and the shortening of the distance between the main body and the handle, a clamping mechanism is arranged on the upper left side in the main body and comprises a clamping rod cavity arranged in the main body, clamping rods capable of sliding up and down are arranged in the clamping rod cavity, and clamping slide rods are symmetrically and fixedly arranged at the front end and the rear end of the upper end face of the clamping rods, the upper end of the clamping slide bar extends to the upper part of the main body and is hinged with an inward turning bar, the inward turning bars on the front side and the rear side are close to one end and are abutted against one end and can only turn downwards, the branches can be clamped between the main body by the inward turning bar, a cutter mechanism is arranged on the upper right side in the main body and comprises a rotating cavity which is arranged on the inner right side of the main body and is provided with an upward opening, a cutter base is connected to the left wall of the rotating cavity in a rotating manner, a lower scissors is fixedly arranged at the upper end of the cutter base, an upper scissors is hinged to the front side of the lower scissors and can cut the thin branches together with the lower scissors, a wheel saw cavity with a downward opening is arranged in the front and the rear side of the inner lower side of the cutter base in a penetrating manner, a wheel saw is connected to the left wall of the wheel saw cavity in a rotating manner, when the cutter base, the upper end of the left wall of the rotating cavity is rotationally connected with a power bevel gear, the power bevel gear can be switched to be in power connection with the upper scissors and the wheel saw by the rotation of the cutter base, a driving mechanism is arranged between the clamping mechanism and the cutter mechanism and above the telescopic mechanism, the driving mechanism can provide power for the telescopic mechanism, the clamping mechanism and the cutter mechanism, the left side of the driving mechanism is provided with an early warning mechanism, when the phenomenon that the machine is out of hand due to overweight branches occurs, the early warning mechanism can control and cut off the power connection between the driving mechanism and the cutter mechanism, the clamping mechanism is in power connection with the telescopic mechanism, the inward turning rod is loosened to clamp the branches and control the telescopic mechanism to contract, the driving mechanism provides power for all the devices, and the early warning mechanism is arranged on the left side of the driving mechanism and in the main body.

Preferably, the telescopic mechanism comprises a telescopic hinge arranged in the telescopic rod cavity, the left upper end of the telescopic hinge is rotatably connected between the front wall and the rear wall of the telescopic rod cavity, the upper wall of the telescopic rod cavity is communicated with a telescopic moving cavity, a moving block capable of sliding left and right is arranged in the telescopic moving cavity, the right upper end of the telescopic hinge is hinged on the lower end surface of the moving block, the left lower end of the telescopic hinge is hinged on the upper end surface of the handle, a chute seat positioned at the right lower part in the telescopic rod cavity is fixedly arranged on the upper end surface of the handle, a chute is arranged in the chute seat in a penetrating manner from front to back, the right lower end of the telescopic hinge is slidably connected in the chute from left to right, a telescopic bevel gear shaft threaded in the moving block is rotatably connected between the left wall and the right wall of the telescopic moving cavity, and, the telescopic mechanism is characterized in that a telescopic driving bevel gear meshed with the telescopic bevel gear is rotatably connected to the upper wall of the telescopic moving cavity, a telescopic switching cavity is arranged above the telescopic driving bevel gear and on the upper side of the telescopic moving cavity, a telescopic rod shaft is fixedly arranged at the axis, the upper end of the telescopic rod shaft extends into the telescopic switching cavity, a telescopic slider is arranged in the telescopic switching cavity in a vertically sliding manner, a telescopic sleeve sleeved at the upper end of the telescopic rod shaft is vertically and rotatably connected in the telescopic slider in a penetrating manner, and a spline connection is formed between the telescopic sleeve and the telescopic rod shaft.

Preferably, the left side of the telescopic switching cavity is communicated with a telescopic switching cavity, the left end of the telescopic sliding block extends into the inner cavity of the telescopic sliding block, the upper wall of the telescopic switching cavity is fixedly provided with a telescopic electromagnet, and a telescopic spring is fixedly connected between the lower end of the telescopic sliding block and the lower wall of the telescopic sliding block cavity.

Preferably, the telescopic rod cavity left and right sides symmetry is equipped with the bracing piece cavity under the opening countryside, gliding bracing piece that is equipped with about the bracing piece cavity internal energy, the bracing piece lower extreme with handle up end fixed connection, bracing piece cavity upper wall fixedly connected with damping spring, the damping spring lower extreme with bracing piece upper end offsets.

Preferably, the driving mechanism comprises a motor fixedly arranged on the upper side of the telescopic switching cavity, the upper end of the motor is in power connection with a motor shaft, the upper side of the motor is provided with a belt wheel cavity, the outer circular surface of the motor shaft is fixedly provided with a driving belt wheel positioned in the belt wheel cavity, the left side of the driving belt wheel is provided with a driven belt wheel which is opposite to the lower side of the clamping rod cavity and is rotatably connected to the upper wall of the belt wheel cavity, a belt wheel belt is wound between the driving belt wheel and the driven belt wheel, the upper side of the driving belt wheel is provided with a switching cavity, the upper end of the motor shaft extends into the switching cavity, the outer circular surface of the motor shaft is fixedly provided with a switching driving bevel gear, the right side of the switching driving bevel gear is engaged with a switching driven bevel gear which is rotatably connected to the right wall, the upper end of the motor shaft extends into the power cavity and is fixedly provided with a motion driving bevel gear, the right side of the motion driving bevel gear is meshed with a motion driven bevel gear which is rotatably connected to the right wall of the power cavity, and the axis of the motion driven bevel gear is fixedly connected with a motion gear shaft.

Preferably, the clamping mechanism comprises a clamping sleeve cavity which is arranged at the lower side of the clamping rod cavity and is positioned at the upper side of the driven belt pulley, the lower wall of the clamping sleeve cavity is rotatably connected with a clamping shaft, the lower end of the clamping shaft is fixedly connected with the axle center of the driven belt pulley, the upper wall of the clamping sleeve cavity is rotatably connected with a clamping screw, the lower end of the clamping screw and the upper end of the clamping shaft are jointly sleeved and are in splined connection with the clamping sleeve, the outer circular surface of the clamping sleeve is rotatably connected with a clamping slide block, the left side of the clamping sleeve cavity is communicated with a clamping slide block cavity, the left end of the clamping slide block and the left wall of the clamping slide block cavity are in up-down sliding connection, the upper wall of the clamping slide block cavity is fixedly provided with a clamping electromagnet positioned at the upper side of the clamping slide block, a clamping spring is fixedly arranged between the lower end of the clamping slide block and the lower wall of the clamping slide block cavity, the, the clamping screw rod penetrates through the clamping rod from top to bottom and is in threaded connection, the upper side of the end of the clamping screw rod is fixedly connected with the clamping slide rod according to the clamping rod principle, a reset spring cavity is arranged on the inner upper side of the clamping slide rod, and a reset spring is fixedly connected between the hinged end of the inward turning rod and the lower wall of the reset spring cavity.

Preferably, a rotating shaft is rotatably connected between the left wall and the right wall of the rotating cavity, the cutter base is fixedly connected with the excircle end face of the rotating shaft, the front end of the lower side of the upper scissors is fixedly connected with an upper scissors connecting rod, the upper end of the cutter base is provided with a connecting rod cavity with an upward opening, a sliding rod capable of sliding up and down is arranged in the connecting rod cavity, the upper end of the sliding rod is hinged with a middle connecting rod, the upper end of the middle connecting rod is hinged with the front end of the upper scissors connecting rod, the rear side of the connecting rod cavity is communicated with a cam cavity with a leftward opening, a cylindrical cam shaft is rotatably connected between the upper wall and the lower wall of the cam cavity, a scissors bevel gear is fixedly arranged on the excircle end face of the lower side of the cylindrical cam shaft and can be meshed with the power bevel gear, a cylindrical cam is fixedly arranged, the rear end of the sliding rod is fixedly provided with a cam connecting rod, the rear end of the cam connecting rod extends into the arc-shaped groove and is connected with the arc-shaped groove in a sliding manner, a circular saw shaft is connected between the left wall and the right wall of the circular saw cavity in a rotating manner, the circular saw is fixedly arranged on the outer circular surface of the circular saw shaft, a chain wheel cavity is arranged on the left side of the circular saw cavity, the left end of the circular saw shaft extends into the chain wheel cavity and is fixedly provided with a driven chain wheel, the upper side of the driven chain wheel is provided with a driving chain wheel which is connected with the right wall of the chain wheel cavity in a rotating manner, a chain wheel belt is wound between the driving chain wheel and the driven chain wheel, a chain wheel shaft is fixedly arranged on the axis of the driving chain wheel, the right side and the upper side of the chain wheel cavity are provided with a circular saw bevel gear cavity with a left opening, the, the circular saw drive bevel gear can be meshed with the power bevel gear.

Preferably, a switching cavity is arranged on the left side of the rotating cavity, a power bevel gear shaft is rotatably connected to the right wall of the upper side of the switching cavity, the right end of the power bevel gear shaft is fixedly connected with the axis of the power bevel gear, a motion gear shaft which is in the same axis as the power bevel gear shaft is rotatably connected to the left wall of the upper side of the switching cavity, the right end of the motion gear shaft and the left end of the power bevel gear shaft are jointly sleeved and splined with a power shaft sleeve, the left end of the motion gear shaft is fixedly connected with the axis of the motion driven bevel gear, the left end of the rotating shaft extends to the lower side in the switching cavity, the left wall of the lower side of the switching cavity is rotatably linked with a rotating power shaft which is in the same axis as the rotating shaft, the right end of the rotating power shaft and the left end of the rotating shaft are jointly sleeved and splined with a rotating, switch the intracavity and be equipped with ability horizontal slip's circular saw driven bevel gear, the power shaft sleeve with rotatory axle sleeve runs through about respectively both ends and rotation connection about the switching slider, switching slider left side wall is fixed and is equipped with the switching electro-magnet, switches fixedly connected with switching spring between the chamber right side jade and the switching slider right-hand member face, switch chamber right side jade lower extreme with the intercommunication is equipped with the translation piece chamber between the rotatory chamber left side wall, the intracavity ability horizontal slip of translation piece is equipped with the latch segment, latch segment left end fixed connection in circular saw driven bevel gear right-hand member face, be concerned with in the cutter base left end face the rotation axis longitudinal symmetry is equipped with the draw-in groove, the latch segment right-hand member can extend to the downside in the draw-in groove.

Preferably, the early warning mechanism comprises an early warning wheel cavity which is arranged at the lower side of the driven belt wheel and is positioned at the left side of the motor, an early warning wire wheel is rotatably arranged between the front wall and the rear wall of the early warning wheel cavity, a power motor is fixedly arranged in the rear wall of the early warning wheel cavity, the early warning wire wheel is in power connection with the front end of the power motor, three early warning wires are wound on the early warning wire wheel and are respectively and fixedly connected with the upper end surface of the telescopic slide block, the upper end surface of the clamping slide block and the left end surface of the switching slide block, when a tool is out of hand, the power motor is emergently started and drives the early warning wire wheel to rotate and strain the early warning wires, the telescopic slide block drives the telescopic rod shaft to be communicated with the motor shaft to shorten the machine, the clamping shaft is emergently communicated with the clamping screw rod to enable the clamping rod to move upwards to loosen the fixation of the tree branches, The rotary power shaft is disengaged from the rotary shaft.

Preferably, the safety switch is arranged on the right side of the handle, the safety switch is bound with the wrist when the tool is used, and when the tool is released from the hand due to overweight branches, the safety switch is taken out to start an emergency state.

The invention has the beneficial effects that: the device can prevent the branches from falling to damage surrounding objects in the pruning process in a branch clamping mode, can replace the used cutter to deal with the branches with different thicknesses, and is also provided with a danger early warning system.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

FIG. 1 is a schematic view of the whole structure of a branch pruning device capable of switching cutters and preventing branches from falling off;

FIG. 2 is a schematic view of the structure in the direction "A-A" of FIG. 1;

FIG. 3 is a schematic view of the structure in the direction "B-B" of FIG. 1;

FIG. 4 is a schematic view of the structure in the direction "C-C" of FIG. 1;

FIG. 5 is an enlarged view of the structure of "D" of FIG. 1;

fig. 6 is an enlarged view of the structure of "E" in fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-6, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to a branch pruning device capable of switching cutters and preventing branches from falling, which comprises a main body 18, wherein a telescopic rod cavity 75 with a downward opening is arranged at the center of the lower end face of the main body 18, support rod cavities 21 with downward openings are symmetrically arranged on the left side and the right side of the telescopic rod cavity 75, telescopic mechanisms 102 are arranged in the telescopic rod cavity 75 and on the upper side of the telescopic rod cavity, a handle 12 is arranged on the lower side of the main body 18, the telescopic mechanisms 102 are connected between the upper wall of the support rod cavity 21 and the upper end face of the handle 12, the telescopic mechanisms 102 are used for controlling the extension and the shortening of the distance between the main body 18 and the handle 12, a clamping mechanism 103 is arranged on the upper left side in the main body 18, the clamping mechanism 103 comprises a clamping rod cavity 27 arranged in the main body 18, a clamping rod 28 capable of sliding up and down is arranged in the clamping rod cavity 27, and clamping slide rods 14 are symmetrically arranged at the front, the upper end of the clamping slide bar 14 extends to the upper part of the main body 18 and is hinged with an inward turning bar 31, the inward turning bars 31 at the front and the rear sides are close to one end and are abutted against each other and can only turn downwards, the inward turning bar 31 can clamp branches between the main body 18, a cutter mechanism 104 is arranged at the upper right part in the main body 18, the cutter mechanism 104 comprises a rotating cavity 56 which is arranged at the inner right side of the main body 18 and is provided with an upward opening, the left wall of the rotating cavity 56 is rotatably connected with a cutter base 59, the upper end of the cutter base 59 is fixedly provided with a lower scissors 36, the front side of the lower scissors 36 is hinged with an upper scissors 37, the turning of the upper scissors 37 and the lower scissors 36 can cut the branches together, a wheel saw cavity 95 with a downward opening is arranged in the front and the rear of the inner lower side of the cutter base 59 in a penetrating manner, the left wall of the wheel saw cavity 95 is rotatably connected with a, the wheel saw 45 rotates to perform memorial cutting on thick branches, the upper end of the left wall of the rotating cavity 56 is rotatably connected with a power bevel gear 111, the cutter base 59 is rotatable to switch the power connection of the power bevel gear 111 to the upper scissors 37 and the wheel saw 45, a driving mechanism 101 is arranged between the clamping mechanism 103 and the cutter mechanism 104 and above the telescopic mechanism 102, the driving mechanism 101 can provide power for the telescopic mechanism 102, the clamping mechanism 103 and the cutter mechanism 104, the left side of the driving mechanism 101 is provided with an early warning mechanism 105, when the phenomenon that the machine is out of hand due to overweight branches occurs, the early warning mechanism 105 can control and cut off the power connection between the driving mechanism 101 and the cutter mechanism 104, the clamping mechanism 103 is in power connection with the telescopic mechanism 102, the inward turning rod 31 is released from clamping the branches, and the telescopic mechanism 102 is controlled to contract.

Advantageously, the telescopic mechanism 102 includes a telescopic hinge 15 disposed in the telescopic rod cavity 75, the upper left end of the telescopic hinge 15 is rotatably connected between the front and rear walls of the telescopic rod cavity 75, the upper wall of the telescopic rod cavity 75 is communicated with a telescopic moving cavity 19, a moving block 20 capable of sliding left and right is disposed in the telescopic moving cavity 19, the upper right end of the telescopic hinge 15 is hinged to the lower end face of the moving block 20, the lower left end of the telescopic hinge 15 is hinged to the upper end face of the handle 12, a chute seat 13 disposed at the lower right inside the telescopic rod cavity 75 is fixedly disposed on the upper end face of the handle 12, a chute 76 is disposed in the chute seat 13 in a penetrating manner, the lower right end of the telescopic hinge 15 is slidably connected in the chute 76 left and right, a telescopic bevel gear shaft 74 threaded in the moving block 20 is rotatably connected between the left and right walls of the telescopic moving cavity 19, a telescopic bevel gear 112 is fixedly disposed at the left end of the outer, the upper wall of the telescopic moving cavity 19 is rotatably connected with a telescopic drive bevel gear 73 meshed with the telescopic bevel gear 112, a telescopic switching cavity 68 is arranged on the upper side of the telescopic moving cavity 19 and above the telescopic drive bevel gear 73, a telescopic rod shaft 71 is fixedly arranged at the axis, the upper end of the telescopic rod shaft 71 extends into the telescopic switching cavity 68, a telescopic slider 70 is arranged in the telescopic switching cavity 68 and can slide up and down, a telescopic sleeve 69 sleeved on the upper end of the telescopic rod shaft 71 penetrates through the telescopic slider 70 up and down and is rotatably connected with the telescopic sleeve 69, and the telescopic sleeve 69 is in splined connection with the telescopic rod shaft 71.

Beneficially, the telescopic switching cavity 68 is communicated with the left side of the telescopic switching cavity 68, the left end of the telescopic slider 70 extends into the telescopic slider cavity 98, the upper wall of the telescopic switching cavity 68 is fixedly provided with the telescopic electromagnet 78, and a telescopic spring 99 is fixedly connected between the lower end of the telescopic slider 70 and the lower wall of the telescopic slider cavity 98.

Beneficially, the telescopic rod cavity 75 is symmetrically provided with support rod cavities 21 with openings at left and right sides, the support rod cavity 21 is internally provided with a support rod 16 capable of sliding up and down, the lower end of the support rod 16 is fixedly connected with the upper end face of the handle 12, the upper wall of the support rod cavity 21 is fixedly connected with a damping spring 17, and the lower end of the damping spring 17 is abutted against the upper end of the support rod 16.

Advantageously, the driving mechanism 101 includes a motor 72 fixedly disposed on the upper side of the telescopic switching chamber 68, the upper end of the motor 72 is in power connection with a motor shaft 63, the upper side of the motor 72 is provided with a pulley chamber 32, a driving pulley 67 is fixedly disposed on the outer circumferential surface of the motor shaft 63 and located in the pulley chamber 32, a driven pulley 33 rotatably connected to the upper wall of the pulley chamber 32 is disposed on the left side of the driving pulley 67 and opposite to the lower side of the clamping rod chamber 27, a pulley belt 97 is wound between the driving pulley 67 and the driven pulley 33, a switching chamber 64 is disposed on the upper side of the driving pulley 67, the upper end of the motor shaft 63 extends into the switching chamber 64, a switching driving bevel gear 65 is fixedly disposed on the outer circumferential surface, a switching driven bevel gear 66 rotatably connected to the right wall of the switching chamber 64 is engaged on the right side of the switching driving bevel gear 65, and a rotating power shaft 88 is fixedly connected to, the upper side of the conversion cavity 64 is provided with a power cavity 60, the upper end of the motor shaft 63 extends into the power cavity 60 and is fixedly provided with a moving driving bevel gear 62, the right side of the moving driving bevel gear 62 is engaged with a moving driven bevel gear 61 which is rotatably connected to the right wall of the power cavity 60, and the axis of the moving driven bevel gear 61 is fixedly connected with a moving gear shaft 91.

Beneficially, the clamping mechanism 103 includes a clamping sleeve cavity 25 disposed at the lower side of the clamping rod cavity 27 and located at the upper side of the driven pulley 33, the lower wall of the clamping sleeve cavity 25 is rotatably connected with a clamping shaft 22, the lower end of the clamping shaft 22 is fixedly connected with the axis of the driven pulley 33, the upper wall of the clamping sleeve cavity 25 is rotatably connected with a clamping screw 26, the lower end of the clamping screw 26 is jointly sleeved with the upper end of the clamping shaft 22 and is in splined connection with a clamping sleeve 23, the outer circular surface of the clamping sleeve 23 is rotatably connected with a clamping slider 24, the left side of the clamping sleeve cavity 25 is communicated with a clamping slider cavity 80, the left end of the clamping slider 24 is vertically slidably connected with the left wall of the clamping slider cavity 80, the upper wall of the clamping slider cavity 80 is fixedly provided with a clamping electromagnet 79 and located at the upper side of the clamping slider 24, a clamping spring 81 is fixedly disposed between the lower end of the clamping slider 24 and the lower wall of the, the upper end of the clamping screw 26 extends into the clamping rod cavity 27 and is rotatably connected to the upper wall of the clamping rod cavity 27, the clamping screw 26 vertically penetrates through the clamping rod 28 and is in threaded connection, the upper side of the end of the clamping screw 26 is fixedly connected with the clamping slide rod 14 according to the principle of the clamping rod 28, a return spring cavity 30 is arranged on the inner upper side of the clamping slide rod 14, and a return spring 29 is fixedly connected between the hinged end of the inward-turning rod 31 and the lower wall of the return spring cavity 30.

Beneficially, a rotating shaft 42 is rotatably connected between the left wall and the right wall of the rotating cavity 56, the cutter base 59 is fixedly connected with the end face of the outer circle of the rotating shaft 42, the front end of the lower side of the upper scissors 37 is fixedly connected with an upper scissors connecting rod 46, the upper end of the cutter base 59 is provided with a connecting rod cavity 51 with an upward opening, a sliding rod 49 capable of sliding up and down is arranged in the connecting rod cavity 51, the upper end of the sliding rod 49 is hinged with a middle connecting rod 47, the upper end of the middle connecting rod 47 is hinged with the front end of the upper scissors connecting rod 46, the rear side of the connecting rod cavity 51 is communicated with a cam cavity 52 with a leftward opening, a cylindrical cam shaft 39 is rotatably connected between the upper wall and the lower wall of the cam cavity 52, a scissors bevel gear 40 is fixedly arranged on the end face of the lower side of the cylindrical cam shaft 39, the scissors bevel gear 40 can be, be equipped with undulant arc wall 50 from top to bottom in the disc outside cylindrical cam 38, slide bar 49 rear end is fixed and is equipped with cam connecting rod 48, cam connecting rod 48 rear end extends to sliding connection in the arc wall 50, it is connected with circular saw axle 58 to rotate between the wall about circular saw cavity 95, wheel saw 45 fixed set up in the disc outside circular saw axle 58, wheel saw cavity 95 left side is equipped with sprocket chamber 44, circular saw axle 58 left end extends to the fixed driven sprocket 57 that is provided with in sprocket chamber 44, driven sprocket 57 upside is equipped with the drive sprocket 53 who rotates to connect in the right wall of sprocket chamber 44, around being equipped with sprocket belt 55 between drive sprocket 53 and the driven sprocket 57, drive sprocket 53 axle center department is fixed and is equipped with sprocket shaft 54, sprocket chamber 44 right side and upside are equipped with the circular saw bevel gear chamber 83 to the opening left, sprocket shaft 54 right-hand member extends to the circular saw bevel gear chamber 83 internal fixation is equipped with circular saw bevel gear 96, and a circular saw driving bevel gear 43 meshed with a gear on the upper side of the circular saw driven bevel gear 96 is rotatably connected between the upper wall and the lower wall of the circular saw bevel gear cavity 83, and the circular saw driving bevel gear 43 can be meshed with the power bevel gear 111.

Beneficially, a switching chamber 92 is provided on the left side of the rotating chamber 56, a power bevel gear shaft 94 is rotatably connected to the right wall of the upper side of the switching chamber 92, the right end of the power bevel gear shaft 94 is fixedly connected to the axis of the power bevel gear 111, a motion gear shaft 91 coaxially connected to the power bevel gear shaft 94 is rotatably connected to the left wall of the upper side of the switching chamber 92, the right end of the motion gear shaft 91 and the left end of the power bevel gear shaft 94 are jointly sleeved and splined with a power shaft sleeve 93, the left end of the motion gear shaft 91 is fixedly connected to the axis of the motion driven bevel gear 61, the left end of the rotating shaft 42 extends to the inner lower side of the switching chamber 92, the left wall of the lower side of the switching chamber 92 is rotatably linked with a rotating power shaft 88 coaxially connected to the rotating shaft 42, the right end of the rotating power shaft 88 and the left end of the rotating shaft 42, the left end of the rotating power shaft 88 is fixedly connected with the axis of the conversion driven bevel gear 66, a circular saw driven bevel gear 96 which can slide left and right is arranged in the switching cavity 92, the power shaft sleeve 93 and the rotating shaft sleeve 87 respectively penetrate through the upper end and the lower end of the switching slide block 86 at the left and the right and are connected in a rotating way, a switching electromagnet 90 is fixedly arranged on the left wall of the switching slide block 86, a switching spring 89 is fixedly connected between the right wall of the switching cavity 92 and the right end face of the switching slide block 86, a translation block cavity 82 is communicated between the lower end of the right wall of the switching cavity 92 and the left wall of the rotating cavity 56, a locking block 85 is arranged in the translation block cavity 82 and can slide left and right, the left end of the locking block 85 is fixedly connected with the right end surface of the circular saw driven bevel gear 96, clamping grooves 41 are symmetrically formed in the left end face of the cutter base 59 up and down relative to the rotating shaft 42, and the right end of the locking block 85 can extend to the lower side of the clamping groove 41.

Advantageously, the early warning mechanism 105 includes an early warning wheel cavity 34 disposed at the lower side of the driven pulley 33 and located at the left side of the motor 72, an early warning wheel 35 is rotatably disposed between the front wall and the rear wall of the early warning wheel cavity 34, a power motor 84 is fixedly disposed in the rear wall of the early warning wheel cavity 34, the early warning wheel 35 is dynamically connected to the front end of the power motor 84, three early warning wires 77 are respectively wound on the early warning wheel 35, the three early warning wires are respectively and fixedly connected to the upper end surface of the telescopic slider 70, the upper end surface of the clamping slider 24 and the left end surface of the switching slider 86, when the tool is out of hand, the power motor 84 is urgently started and drives the early warning wheel 35 to rotate and tighten the early warning wires 77, the telescopic slider 70 drives the telescopic rod shaft 71 to communicate with the motor shaft 63 to shorten the machine, the clamping shaft 22 and the clamping screw 26 are urgently communicated to enable the clamping rod, the switching slider 86 is moved to the intermediate position and the moving gear shaft 91 is disengaged from the power bevel gear shaft 94 and the rotary power shaft 88 is disengaged from the rotary shaft 42.

Beneficially, the safety switch 11 is arranged on the right side of the handle 12, when the tool is used, the safety switch 11 is bound with a wrist, and when the tool is released from the hand due to overweight of branches, the safety switch 11 is taken out to start an emergency state.

The following describes in detail the use of a pruning shears with cutter switching and branch drop prevention herein with reference to fig. 1 to 6:

in the initial state, the telescopic hinge 15 is located in the telescopic rod chamber 75, the clamp rod 28 is at the upper limit position, the clamp shaft 22 and the clamp screw 26 are in the non-meshed state, the telescopic rod shaft 71 and the motor shaft 63 are in the non-meshed state, the motion gear shaft 91 and the power bevel gear shaft 94 are in the non-meshed state, and the rotary power shaft 88 and the rotary shaft 42 are in the non-meshed state.

When the telescopic electric magnet 78 works, the telescopic electric magnet 78 generates magnetic attraction to the telescopic sliding block 70 to enable the telescopic rod shaft 71 to be connected with the motor shaft 63 through the telescopic sleeve 69, the motor 72 is started to drive the motor shaft 63 to rotate, the motor shaft 63 drives the telescopic rod shaft 71 to rotate through the telescopic sleeve 69, the telescopic rod shaft 71 drives the telescopic driving bevel gear 73 to rotate, the telescopic driving bevel gear 73 drives the telescopic bevel gear 112 to rotate through gear engagement, the telescopic bevel gear 112 rotates to drive the telescopic bevel gear shaft 74 to rotate and drive the moving block 20 to move leftwards, the moving block 20 moves leftwards to drive the telescopic hinge 15 to ascend to enable the main body 18 to extend, when the main body 18 extends to a branch, the telescopic electric magnet 78 is powered off, and the telescopic sliding block 70;

when the tool extends to a branch, the branch collides with the inward-turning rod 31 to enable the inward-turning rod 31 to be turned inwards, the branch enters a return spring cavity 30 between the inward-turning rod 31 and the main body 18 to drive the inward-turning rod 31 to return, the motor shaft 63 rotates to drive the driving pulley 67 to rotate, the driving pulley 67 drives the driven pulley 33 to rotate through the pulley belt 97, the driven pulley 33 rotates to drive the clamping shaft 22 to rotate, the clamping electromagnet 79 is electrified to generate suction to drive the clamping slider 24 to move upwards to enable the clamping shaft 22 to be connected with the clamping screw 26 through the clamping sleeve 23, the clamping shaft 22 rotates to drive the clamping screw 26 to rotate through the clamping sleeve 23, the clamping screw 26 rotates to enable the clamping rod 28 to retract inwards to clamp the branch, and when the inward-turning rod 31 fixes the branch, the clamping electromagnet 79 is powered off, the clamping slider 24 is reset under the action of the clamping spring 81;

when a tree branch is fixed, the switching electromagnet 90 is electrified in the positive direction to generate suction, the switching slide block 86 slides to the right limit position to enable the moving gear shaft 91 to be communicated with the power bevel gear shaft 94, the switching slide block 86 drives the power motor 84 to move rightwards so that the locking block 85 enters the clamping groove 41 to fix the cutter base 59 and does not rotate any more, the motor shaft 63 rotates to drive the moving driving bevel gear 62 to rotate, the moving driving bevel gear 62 drives the moving driven bevel gear 61 meshed with the moving driving bevel gear to rotate, the moving driven bevel gear 61 drives the moving gear shaft 91 to rotate, the moving gear shaft 91 drives the power bevel gear shaft 94 to rotate through the power shaft sleeve 93 and drives the power bevel gear 111, the power bevel gear 111 drives the scissors bevel gear 40 meshed with the scissors bevel gear 40 to rotate, the scissors bevel gear 40, the cam connecting rod 48 moves back and forth to drive the sliding rod 49 to slide back and forth and to drive the middle connecting rod 47 to move back and forth, the middle connecting rod 47 drives the upper scissors 37 to cut branches up and down, the power bevel gear 111 drives the circular saw driving bevel gear 43 meshed with the circular saw driving bevel gear 43 to rotate, the circular saw driving bevel gear 43 drives the chain wheel shaft 54 meshed with the circular saw driving bevel gear to rotate, the chain wheel shaft 54 drives the driving chain wheel 53 to rotate through the chain wheel shaft 54, the driving chain wheel 53 drives the driven chain wheel 57 to rotate through the chain wheel belt 55, the driven chain wheel 57 drives the wheel saw 45 to rotate through the circular saw shaft 58 to cut branches, and the switching electromagnet 90 power-off switching slide block 86 resets under;

when the tool needs to be switched, the switching electromagnet 90 is electrified reversely to enable the switching electromagnet 90 to generate repulsive force to enable the switching slide block 86 to be at the left limit position, when the switching slide block 86 is at the right limit position, the rotary power shaft 88 is communicated with the rotary shaft 42 and drives the power motor 84 to move leftwards, the translation block cavity 82 moves leftwards to drive the locking block 85 to move out of the clamping groove 41 to remove the fixation of the cutter base 59, the motor shaft 63 rotates to drive the conversion driving bevel gear 65 to rotate, the conversion driving bevel gear 65 rotates to drive the conversion driven bevel gear 66 engaged with the conversion driving bevel gear to rotate, the conversion driven bevel gear 66 rotates to drive the rotary power shaft 88 to rotate, the rotary power shaft 88 drives the rotary shaft 42 to rotate through the rotary shaft sleeve 87, the rotary shaft 42 rotates to drive the cutter base 59 to overturn the switching, when the cutter base 59 turns over the main body 1 to clamp the slide block cavity by 80 degrees, the switching electromagnet 90 is powered off, and the switching slide block 86 is reset under the action of the switching spring 89 to disconnect the rotating shaft 42 from the rotating power shaft 88.

In an emergency state, the switching electromagnet 90 is powered off, the early warning wire wheel 35 rapidly rotates under the action of the power motor 84 to drive the early warning wire 77 to retract, pull the telescopic slider 70, the clamping slider 24 and the switching slider 86, the clamping shaft 22 and the clamping screw 26, the telescopic shaft 71 and the motor shaft 63 are instantly communicated to enable the clamping rod 28 to move outwards to loosen branches, the moving block 20 moves downwards to enable the tool to be shortened, the switching slider 86 is pulled to the middle position to enable the upper part and the lower part to be disengaged, the phenomenon that the branches fall off the hand due to overweight and damage the hand cannot be caused by the movement of the cutting tool after the branches fall off the hand is prevented. The invention has the beneficial effects that: the device can prevent the branches from falling to damage surrounding objects in the pruning process in a branch clamping mode, can replace the used cutter to deal with the branches with different thicknesses, and is also provided with a danger early warning system.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.

Claims

1. The utility model provides a can switch over cutter and prevent branch pruning ware that branch dropped, includes the main part, its characterized in that: the telescopic rod cavity with a downward opening is arranged at the center of the lower end face of the main body, the support rod cavity with a downward opening is symmetrically arranged on the left side and the right side of the telescopic rod cavity, telescopic mechanisms are arranged in the telescopic rod cavity and on the upper side of the main body, a handle is arranged on the lower side of the main body, the telescopic mechanisms are connected between the upper wall of the support rod cavity and the upper end face of the handle, the telescopic mechanisms are used for controlling the extension and the shortening of the distance between the main body and the handle, a clamping mechanism is arranged on the upper left side in the main body and comprises a clamping rod cavity arranged in the main body, a clamping rod capable of sliding up and down is arranged in the clamping rod cavity, clamping slide rods are symmetrically and fixedly arranged at the front end and the rear end of the upper end face of the clamping slide rod, the upper end of the clamping slide rod extends to the upper side of, the inner turning rod can clamp branches between the main bodies, a cutter mechanism is arranged at the upper right part in the main body and comprises a rotating cavity which is arranged at the right side in the main body and provided with an upward opening, a cutter base is rotatably connected to the left wall of the rotating cavity, lower scissors are fixedly arranged at the upper end of the cutter base, upper scissors are hinged to the front side of the lower scissors, the upper scissors can cut thin branches together with the lower scissors through turning, a wheel saw cavity with a downward opening is arranged in the cutter base in a front-back penetrating manner at the lower side, the left wall of the wheel saw cavity is rotatably connected with a wheel saw, when the cutter base rotates and rotates the wheel saw to the upper side, thick branches are cut through rotation of the wheel saw, a power bevel gear is rotatably connected to the upper end of the left wall of the rotating cavity, the cutter base can switch the power bevel gear to be connected with the upper scissors and the wheel saw, clamping mechanism with just be located between the cutter mechanism telescopic machanism top is equipped with actuating mechanism, actuating mechanism can do telescopic machanism clamping mechanism and cutter mechanism provides power, the actuating mechanism left side is equipped with early warning mechanism, when the overweight phenomenon that leads to the machine to take off the hand of branch appears, early warning mechanism can control and cut off actuating mechanism with cutter mechanism's power is connected, and will clamping mechanism with telescopic machanism power is connected, will the enstrophe pole unclamp the clamp tight and control to the branch telescopic machanism shrink, actuating mechanism provides all devices with power, the actuating mechanism left side just is located and is equipped with early warning mechanism in the main part.

2. The branch pruner capable of switching cutters and preventing branches from falling as claimed in claim 1, wherein: the telescopic mechanism comprises a telescopic hinge arranged in the telescopic rod cavity, the upper left end of the telescopic hinge is rotatably connected between the front wall and the rear wall of the telescopic rod cavity, the upper wall of the telescopic rod cavity is communicated with a telescopic moving cavity, a moving block capable of sliding left and right is arranged in the telescopic moving cavity, the upper right end of the telescopic hinge is hinged on the lower end surface of the moving block, the lower left end of the telescopic hinge is hinged on the upper end surface of the handle, a chute seat positioned at the lower right in the telescopic rod cavity is fixedly arranged on the upper end surface of the handle, a chute penetrates through the chute seat front and back, the lower right end of the telescopic hinge is slidably connected in the chute left and right, a telescopic bevel gear shaft threaded in the moving block is rotatably connected between the left wall and the right wall of the telescopic moving cavity, a telescopic bevel gear is fixedly arranged at the left end of the outer circular surface of the telescopic bevel gear shaft, and, the telescopic active bevel gear is characterized in that a telescopic switching cavity is arranged above the telescopic moving cavity and above the telescopic active bevel gear, a telescopic rod shaft is fixedly arranged at the axis, the upper end of the telescopic rod shaft extends into the telescopic switching cavity, a telescopic slider is arranged in the telescopic switching cavity and can slide up and down, a telescopic sleeve sleeved at the upper end of the telescopic rod shaft is connected in the telescopic slider in a vertically penetrating and rotating mode, and a spline connection is formed between the telescopic sleeve and the telescopic rod shaft.

3. The branch pruner capable of switching cutters and preventing branches from falling as claimed in claim 1, wherein: the telescopic switching cavity is communicated with the left side of the telescopic switching cavity and is provided with a telescopic switching cavity, the left end of the telescopic sliding block extends into the inner cavity of the telescopic sliding block, the upper wall of the telescopic switching cavity is fixedly provided with a telescopic electromagnet, and the lower end of the telescopic sliding block is fixedly connected with a telescopic spring between the lower wall of the telescopic sliding block cavity.

4. The branch pruner capable of switching cutters and preventing branches from falling as claimed in claim 1, wherein: the utility model discloses a telescopic link, including telescopic link chamber, bracing piece chamber upper wall fixedly connected with damping spring, the telescopic link chamber left and right sides symmetry is equipped with the bracing piece chamber under the opening village, gliding bracing piece is equipped with from top to bottom in the bracing piece chamber, the bracing piece lower extreme with handle up end fixed connection, bracing piece chamber upper wall fixedly connected with damping spring, the damping spring lower extreme with bracing piece upper end offsets.

5. The branch pruner capable of switching cutters and preventing branches from falling as claimed in claim 1, wherein: the driving mechanism comprises a motor fixedly arranged on the upper side of the telescopic switching cavity, the upper end of the motor is in power connection with a motor shaft, the upper side of the motor is provided with a belt wheel cavity, the outer circular surface of the motor shaft is fixedly arranged in the belt wheel cavity, a driving belt wheel is fixedly arranged on the left side of the driving belt wheel and is opposite to the lower side of the clamping rod cavity, a driven belt wheel rotatably connected to the upper wall of the belt wheel cavity is arranged between the driving belt wheel and the driven belt wheel, a conversion cavity is arranged on the upper side of the driving belt wheel, the upper end of the motor shaft extends into the conversion cavity, a conversion driving bevel gear is fixedly arranged on the outer circular surface, a conversion driven bevel gear rotatably connected to the right wall of the conversion cavity is meshed on the right side of the conversion driving bevel gear, a rotary power shaft is fixedly connected to the axis of the conversion driven bevel gear, a power cavity is arranged, the right side of the motion driving bevel gear is engaged with a motion driven bevel gear which is rotatably connected to the right wall of the power cavity, and the axis of the motion driven bevel gear is fixedly connected with a motion gear shaft.

6. The branch pruner capable of switching cutters and preventing branches from falling as claimed in claim 1, wherein: the clamping mechanism comprises a clamping sleeve cavity which is arranged on the lower side of the clamping rod cavity and is positioned on the upper side of the driven belt pulley, the lower wall of the clamping sleeve cavity is rotationally connected with a clamping shaft, the lower end of the clamping shaft is fixedly connected with the axle center of the driven belt pulley, the upper wall of the clamping sleeve cavity is rotationally connected with a clamping screw, the lower end of the clamping screw and the upper end of the clamping shaft are jointly sleeved and are in splined connection with the clamping sleeve, the outer circular surface of the clamping sleeve is rotationally connected with a clamping slide block, the left side of the clamping sleeve cavity is communicated with a clamping slide block cavity, the left end of the clamping slide block is vertically and slidably connected with the left wall of the clamping slide block cavity, the upper wall of the clamping slide block cavity is fixedly arranged on the upper side of the clamping slide block, a clamping spring is fixedly arranged between the lower end of the clamping slide block and the lower wall of the clamping slide block cavity, and the upper end of the, the clamping screw rod penetrates through the clamping rod from top to bottom and is in threaded connection, the upper side of the end of the clamping screw rod is fixedly connected with the clamping slide rod according to the clamping rod principle, a reset spring cavity is arranged on the inner upper side of the clamping slide rod, and a reset spring is fixedly connected between the hinged end of the inward turning rod and the lower wall of the reset spring cavity.

7. The branch pruner capable of switching cutters and preventing branches from falling as claimed in claim 1, wherein: a rotating shaft is rotatably connected between the left wall and the right wall of the rotating cavity, the cutter base is fixedly connected with the end face of the excircle of the rotating shaft, the front end of the lower side of the upper scissors is fixedly connected with an upper scissors connecting rod, the upper end of the cutter base is provided with a connecting rod cavity with an upward opening, a slide rod capable of sliding up and down is arranged in the connecting rod cavity, the upper end of the slide rod is hinged with a middle connecting rod, the upper end of the middle connecting rod is hinged with the front end of the upper scissors connecting rod, the rear side of the connecting rod cavity is communicated with a cam cavity with a leftward opening, a cylindrical cam shaft is rotatably connected between the upper wall and the lower wall of the cam cavity, the end face of the excircle of the lower side of the cylindrical cam shaft is fixedly provided with a scissors bevel gear, the scissors bevel gear can be meshed with the, the rear end of the sliding rod is fixedly provided with a cam connecting rod, the rear end of the cam connecting rod extends into the arc-shaped groove and is connected with the arc-shaped groove in a sliding manner, a circular saw shaft is connected between the left wall and the right wall of the circular saw cavity in a rotating manner, the circular saw is fixedly arranged on the outer circular surface of the circular saw shaft, a chain wheel cavity is arranged on the left side of the circular saw cavity, the left end of the circular saw shaft extends into the chain wheel cavity and is fixedly provided with a driven chain wheel, the upper side of the driven chain wheel is provided with a driving chain wheel which is connected with the right wall of the chain wheel cavity in a rotating manner, a chain wheel belt is wound between the driving chain wheel and the driven chain wheel, a chain wheel shaft is fixedly arranged on the axis of the driving chain wheel, the right side and the upper side of the chain wheel cavity are provided with a circular saw bevel gear cavity with a left opening, the, the circular saw drive bevel gear can be meshed with the power bevel gear.

8. The branch pruner capable of switching cutters and preventing branches from falling as claimed in claim 1, wherein: the left side of the rotating cavity is provided with a switching cavity, the right wall of the upper side of the switching cavity is rotationally connected with a power bevel gear shaft, the right end of the power bevel gear shaft is fixedly connected with the axis of the power bevel gear, the left wall of the upper side of the switching cavity is rotationally connected with a motion gear shaft which is coaxially connected with the power bevel gear shaft, the right end of the motion gear shaft and the left end of the power bevel gear shaft are jointly sleeved and are in spline connection with a power shaft sleeve, the left end of the motion gear shaft is fixedly connected with the axis of the motion driven bevel gear, the left end of the rotating shaft extends to the lower side in the switching cavity, the left wall of the lower side of the switching cavity is rotationally linked with a rotating power shaft which is coaxially connected with the rotating shaft, the right end of the rotating power shaft and the left end of the rotating shaft are jointly sleeved and are in spline, switch the intracavity and be equipped with ability horizontal slip's circular saw driven bevel gear, the power shaft sleeve with rotatory axle sleeve runs through about respectively both ends and rotation connection about the switching slider, switching slider left side wall is fixed and is equipped with the switching electro-magnet, switches fixedly connected with switching spring between the chamber right side jade and the switching slider right-hand member face, switch chamber right side jade lower extreme with the intercommunication is equipped with the translation piece chamber between the rotatory chamber left side wall, the intracavity ability horizontal slip of translation piece is equipped with the latch segment, latch segment left end fixed connection in circular saw driven bevel gear right-hand member face, be concerned with in the cutter base left end face the rotation axis longitudinal symmetry is equipped with the draw-in groove, the latch segment right-hand member can extend to the downside in the draw-in groove.

9. The branch pruner capable of switching cutters and preventing branches from falling as claimed in claim 1, wherein: the early warning mechanism comprises an early warning wheel cavity which is arranged on the lower side of the driven belt wheel and is positioned on the left side of the motor, an early warning wire wheel is rotatably arranged between the front wall and the rear wall of the early warning wheel cavity, a power motor is fixedly arranged in the rear wall of the early warning wheel cavity, the early warning wire wheel is in power connection with the front end of the power motor, three early warning wires are wound on the early warning wire wheel and are respectively fixedly connected with the upper end surface of the telescopic slider, the upper end surface of the clamping slider and the left end surface of the switching slider, when a tool is out of hand, the power motor is in emergency starting and drives the early warning wire wheel to rotate and strain the early warning wires, the telescopic slider drives the telescopic rod shaft to be communicated with the motor shaft to shorten a machine, the clamping shaft is in emergency communication with the clamping screw to enable the clamping rod to move upwards to loosen the fixation of branches, the switching slider is moved, The rotary power shaft is disengaged from the rotary shaft.

10. The branch pruner capable of switching cutters and preventing branches from falling as claimed in claim 1, wherein: the safety switch is arranged on the right side of the handle, the safety switch is bound with the wrist when the tool is used, and when the tool is released from the hand due to overweight branches, the safety switch is taken out to start an emergency state.