CN106718652A - A kind of lumbering arm based on municipal Garden Engineering scroll saw - Google Patents
A kind of lumbering arm based on municipal Garden Engineering scroll saw Download PDFInfo
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- CN106718652A CN106718652A CN201710193438.XA CN201710193438A CN106718652A CN 106718652 A CN106718652 A CN 106718652A CN 201710193438 A CN201710193438 A CN 201710193438A CN 106718652 A CN106718652 A CN 106718652A
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- sawtooth
- sliding block
- bevel gear
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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
- A01G23/00—Forestry
- A01G23/02—Transplanting, uprooting, felling or delimbing trees
- A01G23/08—Felling trees
- A01G23/091—Sawing apparatus specially adapted for felling trees
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Abstract
The invention belongs to scroll saw lumbering arm technical field, more particularly to a kind of lumbering arm based on municipal Garden Engineering scroll saw, it includes support meanss, scroll saw, drive mechanism, and wherein drive mechanism is arranged in support meanss；Scroll saw is arranged in drive mechanism and support meanss；It has quickly saws wood, prevents from breaking sawtooth blade, the function of protection staff；Installing the effect of the second hydraulic motor is, during the reduction of the first hydraulic motor speed, the speed of the second hydraulic motor is constant, prevents scroll saw from blocking；When sensing chip is cut in timber from different directions; the 3rd rotating shaft on film can rotate; sensing chip is set smoothly to cut wood; sensing sliding block on second connecting rod arcuately guide rail can be moved; ensure that connecting rod is connected all the time with sensing chip; sensing chip can at any time sense the hardness of wood, reach the purpose for protecting sawtooth blade constantly.
Description
Art
The invention belongs to scroll saw lumbering arm technical field, more particularly to a kind of lumbering based on municipal Garden Engineering scroll saw
Arm.
Background technology
The scroll saw lumbering arm configuration for using at present is simple, and sawtooth can not quickly cut wood, while existing lumbering arm
The sawtooth blade structure for using is simple, does not there is the function of adapting to different hardness trees specifically, when arm is lumbered operationally, runs into hard
The larger wood of degree, sawtooth blade does not have automatic regulation function；Probably the sawtooth blade on scroll saw is broken, to country
And individual brings unnecessary economic loss.
A kind of lumbering arm based on municipal Garden Engineering scroll saw of present invention design solves as above problem.
The content of the invention
To solve drawbacks described above of the prior art, the present invention discloses a kind of lumbering based on municipal Garden Engineering scroll saw
Arm, it is realized using following technical scheme.
A kind of lumbering arm based on municipal Garden Engineering scroll saw, it is characterised in that：It includes support meanss, scroll saw, driving
Mechanism, wherein drive mechanism are arranged in support meanss；Scroll saw is arranged in drive mechanism and support meanss.
Above-mentioned scroll saw includes sawtooth unit, steel wire rope, and plurality of sawtooth unit is connected by steel wire rope.
Above-mentioned support meanss include casing, clamping plate, the first spring, bootstrap block, clamping plate sliding block, retainer, guide rail, ten
Cross chamber is provided with word chamber, the first directive wheel, the second directive wheel, pilot hole, the wherein end face of casing, and in the bottom surface in cross chamber
It is provided with pilot hole；Casing is opened and two symmetrical guide rails is provided with the end face in cross chamber, and two guide rails are close to the side of casing；
The structure and mounting structure of guide rail are identical, and for wherein any one group, clamping plate sliding block is arranged on two sides of clamping plate
On face；Bootstrap block is arranged on the another side of clamping plate；The clamping plate sliding block that clamping plate passes through to install thereon coordinates with guide rail
Install, bootstrap block is located in guide rail；First spring one end is arranged on one end of guide rail, and the other end is arranged on clamping plate；Two
First directive wheel is separately mounted to two one end of clamping plate by straight pin；Four retainers are symmetrically installed on for one group two-by-two
On the end face of casing；Two the second directive wheels are arranged on two groups of retainer one end, and the second directive wheel position by straight pin respectively
Between corresponding two retainers.
Above-mentioned drive mechanism include power transmission shaft, second bevel gear, third hand tap gear, the 4th bevel gear, bearing, first turn
Axle, the second rotating shaft, driving wheel centre bore, second bevel gear chamber, drive hole, third hand tap gear hole, gear cavity, annular groove, the first liquid
Pressure motor, the second hydraulic motor, the first motor support block, the second motor support block, support, base plate, guide post, sliver, the 3rd
Spring, two of which sliver is symmetrically installed on the periphery of guide post；Guide post passes through the sliver and casing installed thereon
On pilot hole guide groove coordinate be arranged on pilot hole in；3rd spring one end is arranged on the bottom surface of pilot hole, other end peace
Mounted in one end of guide post；Base plate is arranged on one end of guide post；Through hole, the symmetrical peace of two supports are provided with two supports
On the end face of base plate；It is circumferentially uniform on the end face of driving wheel to be provided with six drive holes；Driving is provided with driving wheel end face
Wheel centre bore；The inside of driving wheel is provided with gear cavity；Three second bevel gear chambers are circumferentially uniform to be opened in drive hole, and three
Second bevel gear chamber and gear cavity insertion；It is circumferentially uniform on the end face of gear cavity to be provided with three third hand tap gear holes, and the 3rd
Bevel gear hole coordinates with second bevel gear chamber；Driving wheel is rack-mount by power transmission shaft；Three the first power transmission shafts are pacified respectively
In three second bevel gear chambers；Three second bevel gears are separately mounted to three the first power transmission shafts by the hole opened thereon
On；On three circumferentially uniform end faces installed in gear cavity of bearing；Mounting structure is identical on three bearings, for wherein
Any one, the second rotating shaft is arranged on bearing by the hole opened on bearing；The end face center of third hand tap gear is provided with through hole,
Third hand tap gear is arranged in the second rotating shaft by through hole thereon, and is coordinated with second bevel gear；First motor support block is pacified
It is installed therein on a side for support, the second motor support block is arranged on the side of another support；First hydraulic motor
On the end face of the first motor support block；Axle on first hydraulic motor is matched somebody with somebody and is installed with power transmission shaft；Second hydraulic motor
On the end face of the second motor support block；4th bevel gear is arranged on the axle of the second hydraulic motor by the hole opened thereon
On, and coordinate simultaneously with three third hand tap gears.
Above-mentioned sawtooth unit includes driving shell, sawtooth fixed structure, first bevel gear, flexible axle, serrated slot, soft axle transmission knot
Structure, drive block, drive cavity, the 3rd shaft hole, the 3rd rotating shaft, film, sensing chip, arc-shaped guide rail, first connecting rod, second connecting rod,
Sawtooth blade, the first journal stirrup, support block, the first limited block, the second journal stirrup, spring, telescopic, expansion link, sliding block, the 3rd
Ear, chute, saw tooth base, flexible chute, flexible sliding block, sawtooth blade unit, the second limited block, the 3rd limited block, guide block, sensing
Sliding block, arc block, wherein driving shell are installed on a steel cord；Flexible axle is arranged on one end of sawtooth fixed structure, and positioned at steel wire
Rope is internal；The end face center of soft-axle transmission structure is provided with drive cavity, and two soft-axle transmission structures are symmetrically installed on sawtooth and fix
Structure two ends；Sawtooth fixed structure is coordinated installed in steel wire rope by the inwall of drive cavity with the drive block installed on a steel cord
On；It is circumferentially uniform on the periphery of sawtooth fixed structure to be provided with eight serrated slots；First bevel gear is arranged on sawtooth fixed knot
On the periphery of structure；First bevel gear on sawtooth fixed structure coordinates with second bevel gear；Structure in eight serrated slots and
Mounting structure is identical, for wherein any one group, accommodating chamber and the 3rd shaft hole, and the 3rd is provided with the bottom surface of serrated slot
Shaft hole is located at the center of serrated slot side；3rd rotating shaft is arranged on sawtooth fixed structure by the cooperation with the 3rd shaft hole
On；The end face of film is arranged on the end face of first rotating shaft；Sensing chip is shaped as knife edge shape, and sensing chip one end downside is arranged on
On film；Arc-shaped guide rail is provided with the periphery of arc block, arc block is installed by two support blocks with sensing chip side lower end
Together；Chute is provided with the end face center of saw tooth base；Two the first journal stirrups are symmetrically installed on the end face of saw tooth base；Two
Guide block is symmetrically installed on the two sides of sliding block；Two the 3rd journal stirrups are symmetrically installed on the end face of sliding block；Sliding block passes through
Guide block is arranged on saw tooth base with the cooperation of chute；Spring is arranged in chute, and one end of spring is arranged on chute one end, another
End is arranged on sliding block；Telescopic it is symmetrical be provided with two flexible chutes, flexible sliding block is symmetrically installed on one end of expansion link
On periphery；One end end face of telescopic is arranged on saw tooth base；Expansion link is installed by the sliding block that stretches with the cooperation of telescopic chute
In telescopic, and one end end face of expansion link coordinates with sliding block；Expansion link is located in spring with telescopic；The three of sawtooth blade
There is blade on face, two the 4th journal stirrups are symmetrically mounted on sawtooth blade front end downside；Sawtooth blade passes through the 4th journal stirrup and circle
The cooperation of pin is provided with first connecting rod, and sawtooth blade rear end is coordinated on saw tooth base by straight pin and the first journal stirrup；
Two the second journal stirrups are symmetrically mounted on the end face on sensing sliding block；Two the first limited blocks are symmetrically installed on sensing sliding block
On side；3rd limited block is arranged on sensing sliding block side one end, and sensing sliding block is arranged in arc-shaped guide rail；First limited block with
Second limited block is located at arc-shaped guide rail both sides respectively；Second connecting rod one end is coordinated installed in sawtooth by the 3rd journal stirrup with straight pin
On fixed structure, the other end is coordinated on sensing sliding block by the second journal stirrup and straight pin.
Used as the further improvement of this technology, above-mentioned second bevel gear is arranged in first rotating shaft by bearing.
Used as the further improvement of this technology, above-mentioned third hand tap gear is arranged in the second rotating shaft by bearing.
Used as the further improvement of this technology, above-mentioned clamping plate is semi-circular shape, and the design of semi-circular shape ensure that to be cut down
Trees can be smoothly wrapped up in the case of wooden arm overall volume is less to be cut in face of trees.
Relative to traditional scroll saw lumbering arm technology, the present invention devises a kind of lumbering based on municipal Garden Engineering scroll saw
Arm, it has quickly is sawed wood, prevents from breaking sawtooth blade, the function of protection staff, and drive hole its mesh is opened on driving wheel
Be accommodate drive sawtooth unit and drive driving shell drive scroll saw motion；When power transmission shaft rotates, can drive installed in transmission
Driving wheel rotation on axle；The 4th bevel gear driving first bevel gear installed on second hydraulic motor can revolve around own axes
Turn, rotate sawtooth fixed structure, sawtooth unit now can rotate around own axes；By sawtooth unit during the effect of flexible axle
Rotation be delivered on each the sawtooth unit on steel wire rope；Driving shell is transported the purpose is to be easy to drive wheel sawtooth unit
It is dynamic；The purpose of the 3rd rotating shaft is easy for impact force direction of the sensing chip identification trees to sawtooth unit, and sensing chip passes through the 3rd turn
Sensing chip direction can be adjusted to impact force direction of the trees to sawtooth unit by axle, prevent sensing chip from being destroyed by trees；Sensing
The purpose of piece is to sense the soft or hard degree of timber；It is to reduce trees to sensing chip that sensing chip makes knife edge shape
Impact；The soft or hard drag size determined in sensing chip incision trees of trees, the pressure that film is subject to i.e. amplitude of deformation also can be therewith
Change；Film bending promotes the sliding block on second connecting rod along runner movement, so that drive first connecting rod to move, in first connecting rod
Lower sawtooth blade is driven to be rotated around straight pin, so that the position that sawtooth blade swings up and down is adjusted, so film amplitude of deformation
Influence whether the position that sawtooth blade swings up and down；When trees are harder, sawtooth blade is adjusted to relatively low position, prevents saw
Teeth cutter blade is excessively abraded；When trees are softer, sawtooth blade is adjusted to position higher, enables sawtooth blade faster
Cutting wood；The effect of arc-shaped guide rail is when sensing chip is moved, it is ensured that sensing sliding block, second connecting rod match with sensing chip all the time
Close, it is ensured that transmission is smoothed out；It is active force when sawtooth blade provides return that the effect of spring is；By drive block and flexible axle
The cooperation of drive mechanism, it is ensured that sawtooth fixed structure rotates on a steel cord.
Support meanss have the function of support sawtooth unit and drive mechanism in the present invention, and the purpose in cross chamber is opened on casing
It is easy for drive mechanism motion；The effect of clamping plate is, when arm of lumbering works, can to make sawtooth unit on steel wire rope tightly
Laminating wood, has reached the quick function of sawing wood；The effect of the 3rd spring is after lumbering arm has worked, to guide post one
Active force, makes drive mechanism return to original position；When arm of lumbering works, trees press the line between two the first directive wheels
Saw, scroll saw draws drive mechanism, makes the guide post in installation pilot hole that drive device can be guided to be moved along pilot hole, makes on steel wire rope
The contact with wood maximum magnitude of sawtooth unit, reach compensation trees parcel scroll saw function；Third hand tap gear chamber be for
Receiving third hand tap gear；The effect of the first hydraulic motor is to drive driving wheel rotation, while there is the function of governing speed,
When just starting to saw wood, the first hydraulic motor rotary speed is very fast, and the reduction of the first hydraulic motor rotary speed, facilitates people when soon sawing wood
Observation trees toppling direction, has reached the function of protection staff；When arm of lumbering works, on the second hydraulic motor
The 4th bevel gear and third hand tap gear coordinate, third hand tap gear rotation is driven, while the second cone in first rotating shaft
Gear is engaged with third hand tap gear, second bevel gear is rotated around first rotating shaft；Under second bevel gear driving, installed in saw
First bevel gear on tooth fixed structure can also rotate around own axes, and sawtooth unit rotates around own axes；Install the
The effect of two hydraulic motors is that during the reduction of the first hydraulic motor speed, the speed of the second hydraulic motor is constant, prevents scroll saw card
Firmly；When lumbering arm does not work, the second directive wheel on retainer, all the time in existing under the supporting role of retainer
Position remain stationary as, but can be rotated around straight pin, play a part of to support scroll saw；When lumbering arm contact is to wood, wood
Meeting line ball saw, the guide post in drive mechanism is slided along pilot hole, and the grip slide on clamping plate is moved along the guide rail on casing,
The first directive wheel is set to guide scroll saw parcel wood；When lumbering arm starts to saw wood, scroll saw can round and round surround wood, reach scroll saw
Contacted with wood maximum magnitude, such scroll saw just reaches the function of quickly cutting wood.
In use, when arm of lumbering does not work, the 3rd spring is in free retracted position；Second spring is in certainly
By retracted position；The free retracted position of first spring；Two the first directive wheels on clamping plate contact；Install
The second directive wheel on retainer, only rotates without movement around straight pin；When lumbering arm works, the first hydraulic motor drives
Dynamic driving wheel rotation, scroll saw is contacted with wood, pushes scroll saw, and drive mechanism is moved along pilot hole, and the 3rd spring now is drawn
Stretch；The second directive wheel on retainer, remains stationary as in existing position all the time under the supporting role of retainer,
But can be rotated around straight pin, simultaneously clamp on plate and move along the rail, drive the first directive wheel also and then to move together, now first
Spring is in extended state, and the sawtooth unit on steel wire rope tightly can be fitted on wood, while the second fluid motor-driven is pacified
Mounted in thereon the 4th bevel gear rotation, successively drive third hand tap gear, second bevel gear, installed in sawtooth fixed structure first
Bevel gear rotates, and sawtooth unit is rotated around own axes；Under pressure effect of the wood to scroll saw, scroll saw can be complete by wood
Portion is wrapped, and now the first hydraulic motor rotary speed is improved, and the rotating speed of the second hydraulic motor remains constant；Sawed when soon
During wood, the reduction of the first hydraulic motor rotary speed；When harder wood is run into, sensing chip normally equally cuts wood without the image of Buddha
In, the power that sensing chip is subject to can be larger, bends the film being arranged on sensing chip, and the film of bending can promote second connecting rod to transport
Dynamic, under the promotion of second connecting rod, sliding block is compressed along runner movement, spring, and expansion link is transported along the flexible chute on telescopic
It is dynamic；First connecting rod is moved to the direction near sliding block under the drive of sliding block, and the sawtooth blade on first connecting rod is close to
Sliding block, makes the sawtooth blade depth minus of incision wood small, to reach the purpose of protection sawtooth blade；Sensing chip is from different directions
When in incision timber, the 3rd rotating shaft on film can rotate, and sensing chip is smoothly cut wood, installed in second
Sensing sliding block on connecting rod arcuately guide rail can be moved, it is ensured that connecting rod is connected all the time with sensing chip, and sensing chip can sense at any time
The hardness of wood, reaches the purpose for protecting sawtooth blade constantly.After wood is sawed, drive mechanism is in the 3rd spring for lumbering arm
Origin-location is returned under active force, the first active force of spring clamp plate one makes clamping plate return to initial position；Sliding block is in bullet
Can be moved to rightabout when working in the presence of spring, first connecting rod pushes up sawtooth blade under the drive of sliding block, together
When second connecting rod promote sensing chip motion, sensing chip and film is returned to original state.
Brief description of the drawings
Fig. 1 is global facility mounting structure schematic diagram.
Fig. 2 is global facility structural representation.
Fig. 3 is the first directive wheel, the first directive wheel schematic diagram.
Fig. 4 is drive mechanism mounting structure schematic diagram.
Fig. 5 is bearing mounting structure schematic diagram.
Fig. 6 is the second hydraulic motor mounting structure schematic diagram.
Fig. 7 is body structure schematic diagram.
Fig. 8 is to clamp plate structure schematic diagram.
Fig. 9 is sawtooth unit installing structure schematic diagram.
Figure 10 is sawtooth fixed structure schematic diagram.
Figure 11 is Telescopic rod structure schematic diagram.
Figure 12 is sliding block mounting structure schematic diagram.
Figure 13 is steel wire rope mounting structure schematic diagram.
Figure 14 is driving wheel structure schematic diagram.
Figure 15 is sawtooth blade installation structure schematic diagram.
Figure 16 is arc block mounting structure schematic diagram.
Figure 17 is expansion link mounting structure schematic diagram.
Figure 18 is sawtooth blade structure schematic diagram.
Figure 19 is lumbering arm operation principle schematic diagram.
Figure 20 is support block mounting structure schematic diagram.
Figure 21 is the first limited block, the 3rd limited block mounting structure schematic diagram.
Label title in figure：1st, clamping plate；2nd, power transmission shaft；3rd, sawtooth fixed structure；4th, first bevel gear；6th, driving shell；
8th, drive hole；9th, steel wire rope；10th, retainer；11st, the first directive wheel；12nd, the first spring；13rd, guide rail；14th, guide post；16th, saw
Teeth groove；17th, sawtooth blade；18th, sensing chip；19th, accommodating chamber；20th, flexible axle；21st, soft-axle transmission structure；22nd, drive block；23rd, pass
Dynamic chamber；24th, gear cavity；26th, second bevel gear chamber；27th, annular groove；28th, the first journal stirrup；29th, first connecting rod；30th, second connecting rod；
31st, arc track；32nd, film；33rd, the 3rd rotating shaft；34th, support block；35th, the first limited block；36th, the second journal stirrup；37th, the second bullet
Spring；38th, telescopic；39th, expansion link；41st, sliding block；42nd, the 3rd journal stirrup；43rd, chute；44th, saw tooth base；45th, stretch sliding block；46、
Flexible chute；47th, the 4th journal stirrup；48th, sawtooth blade unit；49th, sawtooth unit；50th, drive mechanism；51st, driving wheel centre bore；
52nd, the 3rd shaft hole；53rd, the second limited block；54th, guide block；55th, sliding block is sensed；56th, arc block；57th, the 3rd spring；58th, case
Body；59th, bootstrap block；60th, support；61st, clamping plate sliding block；63rd, the first hydraulic motor；64th, the first motor support block；65th, base plate；
66th, driving wheel；67th, bearing；68th, third hand tap gear；69th, first rotating shaft；70th, second bevel gear；71st, sliver；72nd, the second motor
Support block；73rd, the 4th bevel gear；74th, the second hydraulic motor；75th, cross chamber；76th, pilot hole；77th, third hand tap gear hole；78、
Second directive wheel；79th, scroll saw；80th, the 3rd limited block.
Specific embodiment
As shown in Figure 1, 2, 3, it includes support meanss, scroll saw 79, drive mechanism 50, and wherein drive mechanism 50 is arranged on branch
In support arrangement；Scroll saw 79 is arranged in drive mechanism 50 and support meanss.
Above-mentioned scroll saw 79 includes sawtooth unit 49, steel wire rope 9, plurality of sawtooth unit as shown in Fig. 1,2,3,4,5,6
49 are connected by steel wire rope 9；
As shown in Fig. 1,2,3,7, it includes casing 58, clamping plate 1, the first spring 12, bootstrap block 59, clamping plate sliding block 61, guarantor
Frame 10, guide rail 13, cross chamber 75, the first directive wheel 11, pilot hole 76 are held, wherein cross chamber 75 is provided with the end face of casing 58,
And it is provided with pilot hole 76 in the bottom surface in cross chamber 75；As shown in fig. 7, casing 58 is opened is provided with two symmetrically on the end face in cross chamber 75
Guide rail 13, and two guide rails 13 are close to the side of casing 58；As shown in fig. 7, the structure and mounting structure of guide rail 13 are complete
Identical, for wherein any one group, clamping plate sliding block 61 is arranged on two sides of clamping plate 1；As shown in figure 8, bootstrap block
59 are arranged on the another side of clamping plate 1；As shown in figure 3, clamping plate 1 passes through the clamping plate sliding block 61 and guide rail installed thereon
13 coordinate installation, and bootstrap block 59 is located in guide rail 13；As shown in Figure 1,3, the one end of the first spring 12 is arranged on one end of guide rail 13,
The other end is arranged on clamping plate 1；As shown in Figure 1,2,3, 4, two the first directive wheels 11 are separately mounted to two by straight pin
One end of individual clamping plate 1；As shown in Figure 1,2,3, 4, four retainers 10, one group of end face for being symmetrically installed on casing 58 two-by-two
On；As shown in Figure 1,2,3, 4, two the second directive wheels 78 pass through straight pin installed in two groups of one end of retainer 10 respectively, and the
Two directive wheels 78 are located between corresponding two retainers 10.
As shown in Figure 4,5, 6, above-mentioned drive mechanism 50 includes power transmission shaft 2, second bevel gear 70, third hand tap gear 68, the
Four bevel gears 73, bearing 67, first rotating shaft 69, the second rotating shaft, driving wheel centre bore 51, second bevel gear chamber 26, drive hole 8,
Third hand tap gear hole 77, gear cavity 24, annular groove 27, the first hydraulic motor 63, the second hydraulic motor 74, the first motor support block
64th, the second motor support block 72, support 60, base plate 65, guide post 14, sliver 71, the 3rd spring 57, as shown in fig. 6, wherein two
Individual sliver 71 is symmetrically installed on the periphery of guide post 14；As shown in figure 3, guide post 14 passes through the sliver 71 installed thereon
Coordinate with the guide groove of the pilot hole 76 on casing 58 and be arranged in pilot hole 76；As shown in Figure 3,4, the one end of the 3rd spring 57 is installed
On the bottom surface of pilot hole 76, the other end is arranged on one end of guide post 14；Base plate 65 is arranged on one end of guide post 14；As schemed
Shown in 6, through hole is provided with two supports 60, two supports 60 are symmetrically installed on the end face of base plate 65；As shown in figure 14,
It is circumferentially uniform on the end face of driving wheel 66 to be provided with six drive holes 8；As shown in figure 14, it is provided with driving wheel on the end face of driving wheel 66
Centre bore 51；As shown in figure 14, the inside of driving wheel 66 is provided with gear cavity 24；As shown in Fig. 5,14, three second bevel gear chambers
26 it is circumferentially uniform be opened in drive hole 8, and three second bevel gear chambers 26 and the insertion of gear cavity 24；As shown in Fig. 5,14, tooth
It is circumferentially uniform on the end face in wheel chamber 24 to be provided with three third hand tap gear holes 77, and third hand tap gear hole 77 and second bevel gear chamber
26 coordinate；Driving wheel 66 is arranged on support 60 by power transmission shaft 2；As shown in figure 5, three the first power transmission shafts 2 are separately mounted to
In three second bevel gear chambers 26；As shown in figure 5, three second bevel gears 70 are separately mounted to three by the hole opened thereon
On first power transmission shaft 2；As shown in figure 5, three bearings 67 are circumferentially uniform on the end face of gear cavity 24；As shown in figure 5,
Mounting structure is identical on three bearings 67, for wherein any one, the second rotating shaft is by the Kong An that is opened on bearing 67
On bearing 67；As shown in figure 5, the end face center of third hand tap gear 68 is provided with through hole, third hand tap gear 68 passes through thereon
Through hole is arranged in the second rotating shaft, and is coordinated with second bevel gear 70；As shown in figure 4, the first motor support block 64 is arranged on it
In on a side for support 60, as shown in fig. 6, the second motor support block 72 is arranged on the side of another support 60；Such as
Shown in Fig. 4, the first hydraulic motor 63 is arranged on the end face of the first motor support block 64；Axle and biography on first hydraulic motor 63
Moving axis 2 is matched somebody with somebody and is installed；As shown in fig. 6, the second hydraulic motor 74 is arranged on the end face of the second motor support block 72；Such as Fig. 6 institutes
Show, the 4th bevel gear 73 is arranged on the axle of the second hydraulic motor 74 by the hole opened thereon, and with three third hand tap gears
68 coordinate simultaneously.
As shown in figure 9, above-mentioned sawtooth unit 49 include driving shell 6, sawtooth fixed structure 3, first bevel gear 4, flexible axle 20,
Serrated slot 16, soft-axle transmission structure 21, drive block 22, drive cavity 23, the 3rd shaft hole, the 3rd rotating shaft 33, film 32, sensing chip
18th, arc-shaped guide rail 13, first connecting rod 29, second connecting rod 30, sawtooth blade 17, the first journal stirrup 28, support block 34, the first limited block
35th, the second journal stirrup 36, spring, telescopic 38, expansion link 39, sliding block 41, the 3rd journal stirrup 42, chute 43, saw tooth base 44, flexible cunning
Groove 46, flexible sliding block 45, sawtooth blade unit 48, the second limited block 53, the 3rd limited block 80, guide block 54, sensing sliding block 55, arc
Shape block 56, as shown in figure 9, wherein driving shell 6 is arranged on steel wire rope 9；As shown in figure 13, flexible axle 20 is arranged on sawtooth fixed knot
One end of structure 3, and inside steel wire rope 9；As shown in figure 13, the end face center of soft-axle transmission structure 21 is provided with drive cavity 23,
Two soft-axle transmission structures 21 are symmetrically installed on the two ends of sawtooth fixed structure 3；As shown in figure 13, sawtooth fixed structure 3 passes through
The inwall of drive cavity 23 coordinates on steel wire rope 9 with the drive block 22 being arranged on steel wire rope 9；As shown in Fig. 9,10, saw
It is circumferentially uniform on the periphery of tooth fixed structure 3 to be provided with eight serrated slots 16；As shown in Fig. 9,10, first bevel gear 4 is installed
On the periphery of sawtooth fixed structure；As shown in fig. 6, first bevel gear 4 and second bevel gear 70 on sawtooth fixed structure 3
Coordinate；As shown in Fig. 9,10, the structure and mounting structure in eight serrated slots 16 are identical, for wherein any one group, saw
The shaft hole of accommodating chamber 19 and the 3rd is provided with the bottom surface of teeth groove 16, and the 3rd shaft hole is located at the center of the side of serrated slot 16；Such as
Shown in Fig. 9, the 3rd rotating shaft 33 is arranged on sawtooth fixed structure 3 by the cooperation with the 3rd shaft hole；As shown in figure 15, film
32 end face is arranged on the end face of first rotating shaft 69；As shown in Figure 15,20, sensing chip 18 is shaped as knife edge shape, sensing chip
18 one end downside is arranged on film 32；As shown in Figure 15,16,20, arc-shaped guide rail 13, arc are provided with the periphery of arc block 56
Shape block 56 is installed together by two support blocks 34 with the side lower end of sensing chip 18；As shown in figure 17, the end face of saw tooth base 44
Chute 43 is provided with center；As shown in figure 17, two the first journal stirrups 28 are symmetrically installed on the end face of saw tooth base 44；Two are led
Block 54 is symmetrically installed on the two sides of sliding block 41；As shown in figure 17, two the 3rd journal stirrups 42 are symmetrically installed on sliding block 41
End face on；As shown in figure 12, sliding block 41 is arranged on saw tooth base 44 by guide block 54 with the cooperation of chute 43；Such as Figure 17 institutes
Show, spring is arranged in chute 43, one end of spring is arranged on the one end of chute 43, and the other end is arranged on sliding block 41；Such as Figure 11
It is shown, telescopic 38 it is symmetrical be provided with two flexible chutes 46, flexible sliding block 45 is symmetrically installed on outside one end of expansion link 39
On disc；As shown in figure 17, one end end face of telescopic 38 is arranged on saw tooth base 44；As shown in figure 17, expansion link 39 passes through
Flexible sliding block 45 is arranged in telescopic 38 with the cooperation of telescopic chute, and one end end face of expansion link 39 coordinates with sliding block 41；Stretch
Contracting bar 39 is located in spring with telescopic 38；As shown in figure 18, there are blade, two the 4th journal stirrups on three faces of sawtooth blade 17
47 are symmetrically mounted on the front end of sawtooth blade 17 downside；As shown in figure 15, sawtooth blade 17 is by the 4th journal stirrup 47 and straight pin
Cooperation is provided with first connecting rod 29, and the rear end of sawtooth blade 17 is coordinated installed in saw tooth base 44 by straight pin and the first journal stirrup 28
On；As shown in figure 16, two the second journal stirrups 36 are symmetrically mounted on the end face on sensing sliding block 55；As shown in figure 21, two
One limited block 35 is symmetrically installed on the side of sensing sliding block 55；As shown in figure 21, the 3rd limited block 80 is arranged on sensing and slides
The side one end of block 55, sensing sliding block 55 is arranged in arc-shaped guide rail 13；As shown in figure 16, the first limited block 35 and the second limited block
53 are located at the both sides of arc-shaped guide rail 13 respectively；As shown in figure 16, the one end of second connecting rod 30 is coordinated by the 3rd journal stirrup 42 and straight pin
On sawtooth fixed structure 3, the other end is coordinated on sensing sliding block 55 by the second journal stirrup 36 and straight pin.
As shown in figure 5, above-mentioned second bevel gear 70 is arranged in first rotating shaft 69 by bearing.
As shown in figure 5, above-mentioned third hand tap gear 68 is arranged in the second rotating shaft by bearing.
As shown in figure 8, above-mentioned clamping plate 1 is semi-circular shape.
In sum：
The present invention devises a kind of lumbering arm based on municipal Garden Engineering scroll saw 79, and it has quickly saws wood, prevents from breaking
Sawtooth blade 17, the function of protection staff, opened on driving wheel 66 drive hole 8 the purpose is to accommodate drive sawtooth unit 49 and
Driving shell 6 is driven to drive scroll saw 79 to move；When power transmission shaft 2 rotates, the driving wheel 66 on power transmission shaft 2 can be driven to rotate；
The 4th bevel gear 73 installed on second hydraulic motor 74 drives the meeting of first bevel gear 4 around own axes rotation, consolidates sawtooth
Fixed structure 3 rotates, and sawtooth unit 49 now can be around own axes rotation；During the effect of flexible axle 20 by sawtooth unit 49 from
Turn to be delivered on each the sawtooth unit 49 on steel wire rope 9；Driving shell 6 drives sawtooth unit the purpose is to be easy to driving wheel 66
49 motions；The purpose of the 3rd rotating shaft 33 is easy for impact force direction of the identification trees of sensing chip 18 to sawtooth unit 49, sensing chip
The direction of sensing chip 18 can be adjusted to impact force direction of the trees to sawtooth unit 49 by 18 by the 3rd rotating shaft 33, prevent sensing
Piece 18 is destroyed by trees；The purpose of sensing chip 18 is to sense the soft or hard degree of timber；Sensing chip 18 makes knife edge shape
It is the impact in order to reduce trees to sensing chip 18；The soft or hard drag size determined in the incision trees of sensing chip 18 of trees, film
32 pressure being subject to i.e. amplitude of deformation can also change therewith；The bending of film 32 promotes the sliding block 41 on second connecting rod 30 along chute 43
Motion, so as to drive first connecting rod 29 to move, sawtooth blade 17 rotates around straight pin under the drive of first connecting rod 29, so that
The position that regulation sawtooth blade 17 swings up and down, so the amplitude of deformation of film 32 influences whether the position that sawtooth blade 17 swings up and down
Put；When trees are harder, sawtooth blade 17 is adjusted to relatively low position, prevents sawtooth blade 17 to be excessively abraded；Work as trees
When softer, sawtooth blade 17 is adjusted to position higher, sawtooth blade 17 is cut wood faster；Arc-shaped guide rail 13
Effect be when sensing chip 18 is moved, it is ensured that sensing sliding block 55, second connecting rod 30 are engaged with sensing chip 18 all the time, it is ensured that pass
Dynamic is smoothed out；It is active force when sawtooth blade 17 provides return that the effect of spring is；By drive block 22 and soft axle transmission
The cooperation of structure 21, it is ensured that sawtooth fixed structure 3 rotates on steel wire rope 9.
Support meanss have the function of support sawtooth unit 49 and drive mechanism 50 in the present invention, and cross chamber is opened on casing 58
75 purpose is easy for drive mechanism 50 and moves；The effect of clamping plate 1 is, when arm of lumbering works, can to make on steel wire rope 9
Sawtooth unit 49 is tightly fitted wood, has reached the quick function of sawing wood；The effect of the 3rd spring 57 is in lumbering arm work
After complete, give guide post 14 1 active forces, drive mechanism 50 is returned to original position；When arm of lumbering works, trees pressure
Scroll saw 79 between two the first directive wheels 11, scroll saw 79 can pull drive mechanism 50 to move, and make to be arranged in pilot hole 76
Guide post 14 can guide drive device to be moved along pilot hole 76, make sawtooth unit 49 and wood maximum magnitude on steel wire rope 9
Contact, reaches the function of the scroll saw 79 of compensation trees parcel；The chamber 24 of third hand tap gear 68 is to accommodate third hand tap gear 68；The
The effect of one hydraulic motor 63 is to drive driving wheel 66 to rotate, while there is the function of governing speed, when just starting to saw wood,
The rotating speed of first hydraulic motor 63 is very fast, the rotating speed of the first hydraulic motor 63 reduction when soon sawing wood, facilitates people to observe trees and inclines
Direction, has reached the function of protection staff；When arm of lumbering works, the 4th cone on the second hydraulic motor 74
Gear 73 coordinates with third hand tap gear 68, drives third hand tap gear 68 to rotate, while the second cone in first rotating shaft 69
Gear 70 is engaged with third hand tap gear 68, second bevel gear 70 is rotated around first rotating shaft 69；Driven in second bevel gear 70
Under, the first bevel gear 4 on sawtooth fixed structure 3 can also rotate around own axes, and sawtooth unit 49 is around itself
Axis rotates；Installing the effect of the second hydraulic motor 74 is, during the reduction of the speed of the first hydraulic motor 63, the second hydraulic motor 74
Speed is constant, prevents scroll saw 79 from blocking；When lumbering arm does not work, as shown in figure 19a, the second guiding on retainer 10
Wheel 78, remains stationary as in existing position all the time under the supporting role of retainer 10, but can be rotated around straight pin, plays
Support the effect of scroll saw 79；When lumbering arm contact is to wood, as shown in fig. 19b, wood can be to line ball saw 79, in drive mechanism 50
Guide post 14 slided along pilot hole 76, the grip slide 41 on clamping plate 1 is moved along the guide rail 13 on casing 58, makes first to lead
The parcel wood of scroll saw 79 is guided to wheel 11；When lumbering arm starts to saw wood, as shown in Figure 19 c, scroll saw 79 can round and round surround wood
Firmly, reach scroll saw 79 to be contacted with wood maximum magnitude, such scroll saw 79 just reaches the function of quickly cutting wood.
Specific embodiment, when arm of lumbering does not work, the 3rd spring 57 is in free retracted position；At second spring 37
In free retracted position；The free retracted position of first spring 12；Two the first directive wheels 11 on clamping plate 1 are contacted
Together；The second directive wheel 78 on retainer 10, only rotates without movement around straight pin；When lumbering arm works,
First hydraulic motor 63 drives driving wheel 66 to rotate, and scroll saw 79 is contacted with wood, pushes scroll saw 79, and drive mechanism 50 is along pilot hole
76 motions, the 3rd spring 57 now is stretched；The second directive wheel 78 on retainer 10, in the support of retainer 10
Remained stationary as in existing position all the time under effect, but can be rotated around straight pin, simultaneously clamped on plate 1 and moved along guide rail 13,
The first directive wheel 11 is driven also and then to move together, now the first spring 12 is in extended state, the sawtooth unit on steel wire rope 9
49 tightly can be fitted on wood, while the drive installation of the second hydraulic motor 74 the 4th bevel gear 73 thereon rotates, successively
Drive third hand tap gear 68, second bevel gear 70, rotated installed in the first bevel gear 4 of sawtooth fixed structure 3, make sawtooth unit 49
Around own axes rotation；In the case where wood is to the effect of the pressure of scroll saw 79, scroll saw 79 can all wrap wood, and now first
The rotating speed of hydraulic motor 63 is improved, and the rotating speed of the second hydraulic motor 74 remains constant；When wood is soon sawed, the first liquid
The reduction of the rotating speed of pressure motor 63；When harder wood is run into, sensing chip 18 is normally equally cut in wood without the image of Buddha, sensing chip 18
The power being subject to can be larger, bends the film 32 being arranged on sensing chip 18, and the film 32 of bending can promote second connecting rod 30 to transport
Dynamic, under the promotion of second connecting rod 30, sliding block 41 is moved along chute 43, and spring is compressed, and expansion link 39 is along telescopic 38
Flexible chute 46 is moved；First connecting rod 29 is moved to the direction near sliding block 41 under the drive of sliding block 41, is connected installed in first
Sawtooth blade 17 on bar 29 reduces the depth of sawtooth blade 17 of incision wood, to reach protection serrated knife near sliding block 41
The purpose of piece 17；When sensing chip 18 is cut in timber from different directions, the 3rd rotating shaft 33 on film 32 can rotate,
Sensing chip 18 is set smoothly to cut wood, the sensing sliding block 55 on second connecting rod 30 arcuately guide rail 13 can be moved,
Ensure that connecting rod is connected all the time with sensing chip 18, sensing chip 18 can at any time sense the hardness of wood, reach and protect serrated knife constantly
The purpose of piece 17.After wood is sawed, drive mechanism 50 returns to origin-location to lumbering arm under the active force of the 3rd spring 57,
First spring, 12 clamping plate, 1 one active forces, make clamping plate 1 return to initial position；Sliding block 41 under the action of the spring can be to work
Rightabout motion when making, first connecting rod 29 pushes up sawtooth blade 17 under the drive of sliding block 41, while second connecting rod
30 promotion sensing chips 18 are moved, and sensing chip 18 and film 32 is returned to original state.
Claims (4)
1. a kind of lumbering arm based on municipal Garden Engineering scroll saw, it is characterised in that：It includes support meanss, scroll saw, driving machine
Structure, wherein drive mechanism are arranged in support meanss；Scroll saw is arranged in drive mechanism and support meanss；
Above-mentioned scroll saw includes sawtooth unit, steel wire rope, and plurality of sawtooth unit is connected by steel wire rope；
Above-mentioned support meanss include casing, clamping plate, the first spring, bootstrap block, clamping plate sliding block, retainer, guide rail, cross
Cross chamber is provided with chamber, the first directive wheel, the second directive wheel, pilot hole, the wherein end face of casing, and is opened in the bottom surface in cross chamber
There is pilot hole；Casing is opened and two symmetrical guide rails is provided with the end face in cross chamber, and two guide rails are close to the side of casing；Lead
The structure and mounting structure of rail are identical, and for wherein any one group, clamping plate sliding block is arranged on two sides of clamping plate
On；Bootstrap block is arranged on the another side of clamping plate；The clamping plate sliding block that clamping plate passes through to install thereon coordinates peace with guide rail
Dress, bootstrap block is located in guide rail；First spring one end is arranged on one end of guide rail, and the other end is arranged on clamping plate；Two
One directive wheel is separately mounted to two one end of clamping plate by straight pin；Four retainers are symmetrically installed on case for one group two-by-two
On the end face of body；Two the second directive wheels are arranged on two groups of retainer one end by straight pin respectively, and the second directive wheel is located at
Between corresponding two retainers；
Above-mentioned drive mechanism includes power transmission shaft, second bevel gear, third hand tap gear, the 4th bevel gear, bearing, first rotating shaft, the
Two rotating shafts, driving wheel centre bore, second bevel gear chamber, drive hole, third hand tap gear hole, gear cavity, annular groove, the first hydraulic pressure horse
Up to, the second hydraulic motor, the first motor support block, the second motor support block, support, base plate, guide post, sliver, the 3rd spring,
Two of which sliver is symmetrically installed on the periphery of guide post；Guide post passes through leading on the sliver installed thereon and casing
Coordinate to the guide groove in hole and be arranged in pilot hole；3rd spring one end is arranged on the bottom surface of pilot hole, and the other end is arranged on and leads
To one end of bar；Base plate is arranged on one end of guide post；Through hole is provided with two supports, two supports are symmetrically installed on bottom
On the end face of plate；It is circumferentially uniform on the end face of driving wheel to be provided with six drive holes；Driving wheel center is provided with driving wheel end face
Hole；The inside of driving wheel is provided with gear cavity；Three second bevel gear chambers are circumferentially uniform to be opened in drive hole, and three second cones
Gear cavity and gear cavity insertion；It is circumferentially uniform on the end face of gear cavity to be provided with three third hand tap gear holes, and third hand tap gear
Hole coordinates with second bevel gear chamber；Driving wheel is rack-mount by power transmission shaft；Three the first power transmission shafts are separately mounted to three
In individual second bevel gear chamber；Three second bevel gears are separately mounted on three the first power transmission shafts by the hole opened thereon；Three
On the individual circumferentially uniform end face installed in gear cavity of bearing；Mounting structure is identical on three bearings, for wherein any
One, the second rotating shaft is arranged on bearing by the hole opened on bearing；The end face center of third hand tap gear is provided with through hole, the 3rd
Bevel gear is arranged in the second rotating shaft by through hole thereon, and is coordinated with second bevel gear；First motor support block is arranged on
On the side of one of support, the second motor support block is arranged on the side of another support；First hydraulic motor is installed
On the end face of the first motor support block；Axle on first hydraulic motor is matched somebody with somebody and is installed with power transmission shaft；Second hydraulic motor is installed
On the end face of the second motor support block；The hole that 4th bevel gear passes through to be opened thereon is arranged on the axle of the second hydraulic motor,
And coordinate simultaneously with three third hand tap gears；
Above-mentioned sawtooth unit include driving shell, sawtooth fixed structure, first bevel gear, flexible axle, serrated slot, soft-axle transmission structure,
Drive block, drive cavity, the 3rd shaft hole, the 3rd rotating shaft, film, sensing chip, arc-shaped guide rail, first connecting rod, second connecting rod, sawtooth
Blade, the first journal stirrup, support block, the first limited block, the second journal stirrup, spring, telescopic, expansion link, sliding block, the 3rd journal stirrup, cunning
Groove, saw tooth base, flexible chute, flexible sliding block, sawtooth blade unit, the second limited block, the 3rd limited block, guide block, sensing sliding block,
Arc block, wherein driving shell are installed on a steel cord；Flexible axle is arranged on one end of sawtooth fixed structure, and in steel wire rope
Portion；The end face center of soft-axle transmission structure is provided with drive cavity, and two soft-axle transmission structures are symmetrically installed on sawtooth fixed structure
Two ends；Sawtooth fixed structure is coordinated by the inwall of drive cavity with the drive block installed on a steel cord to be installed on a steel cord；
It is circumferentially uniform on the periphery of sawtooth fixed structure to be provided with eight serrated slots；First bevel gear is arranged on sawtooth fixed structure
On periphery；First bevel gear on sawtooth fixed structure coordinates with second bevel gear；Structure and installation in eight serrated slots
Structure is identical, for wherein any one group, accommodating chamber and the 3rd shaft hole, and the 3rd rotating shaft is provided with the bottom surface of serrated slot
Hole position is in the center of serrated slot side；3rd rotating shaft is arranged on sawtooth fixed structure by the cooperation with the 3rd shaft hole；It is soft
The end face of piece is arranged on the end face of first rotating shaft；Sensing chip is shaped as knife edge shape, and sensing chip one end downside is arranged on film
On；Arc-shaped guide rail is provided with the periphery of arc block, arc block is arranged on one by two support blocks with sensing chip side lower end
Rise；Chute is provided with the end face center of saw tooth base；Two the first journal stirrups are symmetrically installed on the end face of saw tooth base；Two guide blocks
It is symmetrically installed on the two sides of sliding block；Two the 3rd journal stirrups are symmetrically installed on the end face of sliding block；Sliding block passes through guide block
Cooperation with chute is arranged on saw tooth base；Spring is arranged in chute, and one end of spring is arranged on chute one end, other end peace
On sliding block；Telescopic it is symmetrical be provided with two flexible chutes, one end that flexible sliding block is symmetrically installed on expansion link is cylindrical
On face；One end end face of telescopic is arranged on saw tooth base；Expansion link is arranged on by the sliding block that stretches with the cooperation of telescopic chute to be stretched
In contracting set, and one end end face of expansion link coordinates with sliding block；Expansion link is located in spring with telescopic；On three faces of sawtooth blade
There is blade, two the 4th journal stirrups are symmetrically mounted on sawtooth blade front end downside；Sawtooth blade passes through the 4th journal stirrup and straight pin
Cooperation first connecting rod is installed, sawtooth blade rear end is coordinated on saw tooth base by straight pin with the first journal stirrup；Two
Second journal stirrup is symmetrically mounted on the end face on sensing sliding block；Two the first limited blocks are symmetrically installed on the side of sensing sliding block
On；3rd limited block is arranged on sensing sliding block side one end, and sensing sliding block is arranged in arc-shaped guide rail；First limited block and second
Limited block is located at arc-shaped guide rail both sides respectively；Second connecting rod one end is coordinated by the 3rd journal stirrup with straight pin to be fixed installed in sawtooth
In structure, the other end is coordinated on sensing sliding block by the second journal stirrup and straight pin.
2. a kind of lumbering arm based on municipal Garden Engineering scroll saw according to claim 1, it is characterised in that：Above-mentioned second
Bevel gear is arranged in first rotating shaft by bearing.
3. a kind of lumbering arm based on municipal Garden Engineering scroll saw according to claim 1, it is characterised in that：Above-mentioned 3rd
Bevel gear is arranged in the second rotating shaft by bearing.
4. a kind of lumbering arm based on municipal Garden Engineering scroll saw according to claim 1, it is characterised in that：Above-mentioned clamping
Plate is semi-circular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710193438.XA CN106718652A (en) | 2017-03-28 | 2017-03-28 | A kind of lumbering arm based on municipal Garden Engineering scroll saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710193438.XA CN106718652A (en) | 2017-03-28 | 2017-03-28 | A kind of lumbering arm based on municipal Garden Engineering scroll saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106718652A true CN106718652A (en) | 2017-05-31 |
Family
ID=58966736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710193438.XA Withdrawn CN106718652A (en) | 2017-03-28 | 2017-03-28 | A kind of lumbering arm based on municipal Garden Engineering scroll saw |
Country Status (1)
| Country | Link |
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| CN (1) | CN106718652A (en) |
Cited By (4)
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| CN111512816A (en) * | 2020-04-29 | 2020-08-11 | 江苏赛欧智能科技有限公司 | Safety protection mechanism and method for circular saw machine of greening comprehensive maintenance vehicle |
| CN111512926A (en) * | 2020-05-07 | 2020-08-11 | 南通科技职业学院 | Felling device for forestry |
| CN112136641A (en) * | 2020-09-17 | 2020-12-29 | 梅家亮 | Municipal garden felling device |
| CN112470860A (en) * | 2020-12-02 | 2021-03-12 | 广东电网有限责任公司湛江供电局 | Tree felling auxiliary device |
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| CN112470860A (en) * | 2020-12-02 | 2021-03-12 | 广东电网有限责任公司湛江供电局 | Tree felling auxiliary device |
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Application publication date: 20170531 |