A kind of full-automatic fabric dividing device
Technical field
It the utility model is related to cloth processing equipment field, in particular to a kind of full-automatic fabric dividing device.
Background technology
With the development of society and the progress of science and technology, cloth field processed has been done step-by-step what mechanization production substitution manually produced
Transformation, the semi-automatic processing that fabric cutter also generally uses till now from initial pure craft, such as Chinese patent
CN204551108U discloses a kind of semi-automatic cloth expansion Scissoring device, including operating platform, it is characterized in that in described behaviour
Make platform one end and be provided with stock reel, stock reel front end is provided with cropping tool, and the opposite side of cropping tool is provided with the operational platform
Locomotive is clamped, clamping locomotive is provided with height-adjustable folder cloth knife, drives cloth to move by clamping locomotive, cuts
Device is cut, and ensure that Cloth Cutting size is accurate to a certain extent, time saving and energy saving, but needs operator constantly to stare at,
Checking, whether cloth is crooked, whether place neat, manually cloth is shifted after being cut to the cloth of certain number of plies, and use is not square
Just;Thus full-automatic fabric cutter arises at the historic moment, and Chinese patent CN106758113A discloses a kind of full-automatic fabric cutter, and it includes
Frame and distribution control box, are provided with mane conveyer belt in described frame, and the both sides of described mane conveyer belt are connected with defeated
Chain is sent, described carrier chain is connected to feeder motor, and described frame, which is located above mane conveyer belt, is provided with apparatus for feeding,
Cutting mechanism is provided with described apparatus for feeding, described cutting mechanism includes the fabric dividing frame for being arranged on apparatus for feeding, described
Fabric dividing frame on be provided with cutting means, described cutting means include the cutter sleeve on fabric dividing frame, described cutter sleeve bottom
Cutting knife groove is provided with, and cutting knife groove connects with cutter sleeve, is provided with what is coordinated with the cutting knife in cutting knife groove in described cutter sleeve
Cutting knife lifter drawing bar, it is hinged on above described cutting knife lifter drawing bar and cuts on rotation seat, the described rotation seat that cuts also is cut with scissors
It is connected to and cuts rotating bar, and cuts on another socked shaft cut on installing plate being set on fabric dividing frame of rotation seat, it is described
The other end for cutting rotating bar be connected to and cut on turning set, described cutting turning set and cut cuts liter on installing plate
Drop motor to coordinate, described feeder motor, apparatus for feeding and cut lifting motor and be connected to distribution control box, the present invention passes through hair on the neck
Hair conveyer belt realizes the conveying of cloth, can play good conveying effect using its friction, is drawn by the be hinged lifting that cuts
Bar, cut rotating bar and cut rotation seat and realize the lifting of cutting knife, and then define the range of maximum, while regulation can
Slow down the speed of lifting, largely avoid the situation that cutting knife destroys conveyer belt, but cutting means are complex, mane conveying
Band conveys cloth by frictional force needs to ensure the frictional force of mane conveyer belt everywhere unanimously and to a direction, and cloth is unavoidable
There is flaw, it is impossible to ensure that the frictional force of cloth to mane conveyer belt everywhere is consistent, thus, cloth might have in course of conveying
Deflection, so as to cause that waste product or defect ware are formed after cutting, and the cloth after cutting stills need manually to carry, the cloth after cutting
Whether material has flaw to be also required to manually be sorted, without full automation, with expanding economy, the progress of science and technology, machine
People is widely used among production and life, improves automation and the production efficiency of manufacture, so, in automatic fabric cutter
On the basis of using handling equipment of the robot with vacuum cup carry out receive cloth be a kind of ideal scheme.
The content of the invention
The purpose of this utility model is to solve prior art deficiency, there is provided a kind of full-automatic fabric dividing device, can be certainly
It is dynamic to detect and calibrate the crooked situation of cloth, it can also detect whether cloth has flaw, automatic receipts cloth work(is realized by robot
Can, substantially increase fabric dividing efficiency.
To achieve the above object, technical scheme is used by the utility model:A kind of full-automatic fabric dividing device, including machine
Frame and Distribution consoles, cloth-feeding device, fabric dividing device and cloth collector are respectively equipped with frame, and the front end of cloth-feeding device is provided with original
Feed roller, it is characterised in that:The cloth-feeding device is sequentially provided with the first Tobe roller, the second mop roller, presser and drive
Motivation structure, the first Tobe roller both ends are connected through fulcrum, bearing with frame, and the both ends of the second Tobe roller are through fulcrum, bearing
It is connected respectively with support plate, support plate is connected through sliding block, slide rail with frame, and support plate is connected with one end of correction push rod, correction
The other end of push rod is connect with the motor or cylinders being fixed in frame, and the frame below the second mop roller is provided with
Photoelectric sensor, the presser include top board and lower platen, and the top board both ends are respectively through pad, bolt with pushing
Plate is connected, and cloth passage is provided between top board and lower platen, and the both ends of lower platen are connected through connecting plate with frame respectively,
Drive mechanism includes the first roller and second tin roller to lean, and the axis of first roller is equal with the axis of second tin roller
OK, the second tin roller both ends are connected through fulcrum, bearing with frame or fixed plate, the fulcrum difference at the first roller both ends
It is connected through bearing with sliding shoe, the fulcrum of first roller one end is connected through sliding shoe with the motor being fixed in frame
Connect, the sliding shoe at the first roller both ends is connected with the vertical rails that frame or fixed plate are provided with, and the fixed plate is fixed on
In frame, sliding shoe is connected with the expansion link of hydraulic jack or cylinder, and hydraulic jack or cylinder are fixed on frame or fixed plate
On, in the presence of hydraulic jack or cylinder, sliding shoe drives the first roller, and vertically slide rail moves, and adjusts the first roller and the
The radial distance of two rollers, the fabric dividing device are located at the rear end of cloth-feeding device, and fabric dividing device includes cutting platform and positioned at sanction
Cut flat with platform upper end cuts lifting platform, and the both ends for cutting platform are fixedly connected with frame, and the both ends for cutting platform are respectively equipped with sanction
Hydraulic cylinder is cut, hydraulic cylinder one end is cut and is connected with cutting lifting platform, the hydraulic cylinder other end is cut and is connected with frame, cut liter
The both ends of drop platform are respectively equipped with the synchronizing wheel of center in the same horizontal line, and one of synchronizing wheel is through fulcrum, bearing and fixation
Synchronous motor on lifting platform is cut is connected, and another synchronizing wheel is connected through fulcrum, bearing with cutting lifting platform, described
Timing belt is cased with two synchronizing wheels, compartment of terrain on lifting platform is cut and is fixed with the line slideway being parallel to each other, the straight line is led
Rail is parallel with timing belt, provided with line slideway it is perpendicular cut knife rest, cut on knife rest compartment of terrain and be provided with and led with straight line
The neck and the buckle of fixed timing belt that rail is engaged, cut knife rest and be connected to through neck on line slideway and by buckle and together
Step band is connected, and cuts knife rest lower end and is provided with cutting knife through bolt, and under synchronous motor effect, timing belt drives and cuts knife rest
Moved back and forth on line slideway, cut hydraulic cylinder adjustment and cut knife rest is cut on lifting platform and cuts the radial distance between platform
Fabric dividing operation is carried out, the both ends for cutting lifting platform are separately installed with to cut the limit switch of knife rest positioning, described to cut lifting
The both ends of platform are respectively equipped with compress push rod, and compress push rod upper end is with being fixed on the hydraulic jack or cylinders cut on lifting platform
Connect, compress push rod lower end is connected with U-type groove, and the both ends of connecting rod are fixedly connected with the both ends of U-type groove respectively, fixed in connecting rod
There is compress roller, the cloth collector is located at the rear end of fabric dividing device, and cloth collector is provided with belt delivery platform, and belt transmission is flat
Platform is provided with driving wheel and follower, and the both ends of driving wheel and follower are connected through fulcrum, bearing with frame respectively, driving wheel one
The fulcrum at end is connected through frame through bearing with transmission motor, conveyer belt is cased with driving wheel and follower, the belt passes
Platform one end is sent to be leant with cutting platform, the belt delivery platform other end is provided with automatic inspection cloth platform, automatic to examine cloth platform position
In in inspection cloth frame, robot fabric winding machine structure, robot fabric winding machine structure are provided between belt delivery platform and automatic inspection cloth platform
Including manipulator, sucking disc mechanism and control system, the cloth transfer on mechanical hand-motion sucking disc mechanism crawl belt delivery platform
Complete to receive cloth operation on to automatic inspection cloth platform, the belt delivery platform both sides that the sucking disc mechanism captures immediately below cloth are provided with
The collection bar being distributed in diagonal formula, is gathered and is provided with image acquisition device on bar, and cloth diagonal is captured by image acquisition device
On coordinate instruction robot fabric winding machine structure carry out grabbing cloth and put cloth, the belt transmission immediately below the sucking disc mechanism crawl cloth
Supporting plate is provided with platform, the supporting plate is on the inside of the conveyer belt between driving wheel and follower, the both ends point of supporting plate
It is not fixedly connected with frame, the motor or cylinder of the correction push rod connection, photoelectric sensor, motor, the rolling of control first
The hydraulic jack or cylinder of cylinder, cut hydraulic cylinder, synchronous motor, limit switch, transmission motor, the hydraulic oil of compress push rod connection
The control system of cylinder or cylinder, image acquisition device and robot fabric winding machine structure is connected with Distribution consoles respectively.
Manipulator described in the utility model includes mechanical block, large-arm joint, large arm, elbow joint, forearm and small shoulder joint, institute
State large arm one end through large-arm joint with mechanical block to be connected, the large arm other end is connected through elbow joint with forearm, and forearm closes through forearm
Section is connected with sucking disc mechanism, and the large-arm joint, elbow joint, small shoulder joint are connected with servomotor respectively, the large arm
Hydraulic cylinder or cylinder are connected between mechanical block, large arm and forearm, the sucking disc mechanism includes sucker stand, sucker branch
Frame is in " king " font, and sucker stand is provided with distance measuring sensor, and the lower end of sucker stand is equably, compartment of terrain inhales provided with vacuum
Disk, the vacuum cup transtracheal are connected with aspiration pump, the servomotor, hydraulic cylinder or cylinder, distance measuring sensor, pumping
Pump is connected with the control system of manipulator respectively, thus, the signal that Distribution consoles are transmitted by analyzing image acquisition device, leads to
The control system driving manipulator for crossing robot fabric winding machine structure drives sucking disc mechanism accurately to capture what is cut on belt delivery platform
Cloth, shifted, be then placed within automatic inspection cloth platform, complete automatic receipts cloth operation.
Automatic inspection cloth platform side described in the utility model is provided with detection bar, and industrial camera and honeybee are provided with detection bar
Ring device, and the industrial camera and buzzer be connected with Distribution consoles respectively, by the image that industrial camera is shot with
The image for not having flaw cloth is compared, and is not inconsistent if having, and Distribution consoles can start buzzer and be alarmed, and notifies operation
Personnel's timely processing.
Intermeshing first tooth is respectively equipped with first roller described in the utility model and the fulcrum at second tin roller both ends
Wheel and second gear, when cloth is clamped between the first roller and second tin roller, the first roller turns in the presence of motor
When dynamic, by the engagement of first gear and second gear, the driving force of the first roller and second tin roller to cloth is added, and can
It is quick to drive second tin roller to rotate, fast response time.
Raw material roller both ends described in the utility model are connected through fulcrum, bearing with frame, the fulcrum at raw material roller both ends
Upper to be cased with magnetic powder brake respectively, the magnetic powder brake is connected with Distribution consoles, and magnetic powder brake can effectively prevent original
Feed roller skids, cloth packing phenomenon.
Cloth-feeding device described in the utility model is additionally provided with belt tensioning drum, and the both ends of belt tensioning drum are through fulcrum, bearing and frame
Be connected, be the first mop roller and the second mop roller above the both sides of belt tensioning drum, thus, cloth by raw material roller, according to
It is secondary to pass through the first mop roller, belt tensioning drum and the second mop roller, effective tensioning of cloth can be achieved, avoid cloth uneven
Whole, crimp.
The beneficial effects of the utility model are:First, cloth out sequentially passes through the first mop roller from raw material roller, opened
These three rollers for being in the shape of the letter V of tight roller and the second mop roller, cloth have obtained effective tensioning and stretched, and then cloth is worn
Cross presser, the top board and lower platen of presser are limited the width of cloth, flatness, are avoided when cutting
Cloth curling, crooked phenomenon, improve the yield of cloth cutting;Second, by photoelectric sensor, carry out detection cloth and transporting
Whether have during defeated it is crooked, cloth have it is crooked in the case of, signal is communicated to Distribution consoles, distribution by photoelectric sensor
After microprocessor processes in console, drive correction push rod to move the second mop roller by motor or cylinder, adjust cloth
Position on the second mop roller, improve the yield of cloth cutting;Third, use robot fabric winding machine structure, automaticity
Height, manpower consumption is few, efficiency high;Fourth, being detected using industrial camera to the cloth on automatic inspection cloth platform, pass through work
The image of industry video camera shooting is compared with the image of no flaw cloth, is not inconsistent if having, Distribution consoles can start honeybee
Ring device is alarmed, and notifies operating personnel's timely processing;The utility model due to using said structure, realize automatic calibration,
Fabric dividing, cloth and inspection cloth function are received, not only substantially increase and cut yield and operating efficiency, be greatly reduced the strong of manual work
Degree, is easy to promote the use of.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the top view of cloth-feeding device and fabric dividing device in the utility model Fig. 1.
Fig. 3 is a kind of mplifying structure schematic diagram that knife rest is cut in the utility model.
Fig. 4 is the left view that platform is cut in the utility model Fig. 1.
Fig. 5 is the right view of the first roller and second tin roller in the utility model Fig. 1.
Fig. 6 is the top view of belt delivery platform in the utility model Fig. 1.
Fig. 7 is a kind of mplifying structure schematic diagram of sucking disc mechanism in the utility model.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
A kind of full-automatic fabric dividing device, including frame 1 and Distribution consoles 2, frame 1 is provided with cloth-feeding device 3, fabric dividing fills
4 and cloth collector 5 are put, the front end of cloth-feeding device 3 is provided with raw material roller 6, it is characterised in that:The both ends of raw material roller 6 are through fulcrum, axle
Hold and be connected with frame 1, be cased with magnetic powder brake 7 on the fulcrum at the both ends of raw material roller 6 respectively, the magnetic powder brake 7 is with matching somebody with somebody
Electric control platform 2 is connected, magnetic powder brake, such as YSB series magnetic powder brakes, have fast response time, it is simple in construction, without dirt
The advantages that contaminating, be noiseless, saving the energy without impact shock, can effectively prevent raw material roller from skidding, cloth packing phenomenon, work feed dress
Put 3 and be provided with belt tensioning drum 8, the first mop roller 9 and the second mop roller 10 are respectively equipped with above the both sides of belt tensioning drum 8, it is described
Belt tensioning drum 8, the first mop roller 9 and the second mop roller 10 are connected through fulcrum, bearing with the support plate in frame 1 respectively,
First mop roller, belt tensioning drum and the second mop roller are arranged in order into V-shaped, when cloth is by raw material roller, sequentially pass through
When the first mop roller, belt tensioning drum and the second mop roller, effective tensioning of cloth can be achieved, avoid cloth out-of-flatness, volume
Qu Xianxiang, the support plate 11 at the both ends of the second mop roller 10 are connected through sliding block 12, slide rail 13 with frame 1 respectively, support plate 11
It is connected with one end of correction push rod 14, the other end of correction push rod 14 is connected with the correction motor 15 being fixed on support 1,
The frame 1 of the lower section of second mop roller 9 is provided with photoelectric sensor 16, photoelectric sensor such as E18-D80NK models
Photoelectric sensor has the advantages that precision is high, reaction is fast, non-contact, can detect that the spacing between cloth and photoelectric sensor,
When photoelectric sensor is connected with the microprocessor in Distribution consoles, this signal can be transformed into electric signal and be transmitted to microprocessor
Whether device is handled, and then understand cloth and have in transmitting procedure crooked, passes through motor driven correction push rod movement the of rectifying a deviation
The support plate at two mop roller both ends, and then change position of the cloth on the second mop roller, cloth, the work feed are calibrated automatically
Device 3 is additionally provided with presser 17 and drive mechanism 18, and the presser 17 includes top board 19 and lower platen 20, it is described on
The both ends of pressing plate 19 are connected through pad, bolt with lower platen 20 respectively, and cloth passage is provided between top board 19 and lower platen 20,
The both ends of lower platen 20 are connected through connecting plate 21 with frame 1 respectively, and cloth passes through cloth passage, further ensures that cloth is smooth
Not warpage, the drive mechanism 18 include the first roller 22 and second tin roller 23 to lean, the axis of first roller 22
Parallel with the axis of second tin roller 23, the both ends of second tin roller 23 are connected through fulcrum, bearing with fixed plate 24, described solid
Fixed board 24 is fixed in frame 1, and the fulcrum at the both ends of the first roller 22 is connected through bearing with sliding shoe 25 respectively, the first rolling
The fulcrum of 22 one end of cylinder is connected through sliding shoe 25 with the motor 26 being fixed in frame 1, the both ends of the first roller 22
Sliding shoe 25 is connected with the vertical rails 27 that fixed plate 24 is provided with, and sliding shoe 25 is connected with the expansion link of hydraulic jack 28
Connect, hydraulic jack is fixed in frame 1, and in the presence of hydraulic jack 28, sliding shoe 25 drives the first roller 22 vertically to slide
Rail 27 moves, the radial distance of the first roller of regulation 22 and second tin roller 23, the first roller 22 and second tin roller 23 both ends
Fulcrum on be respectively equipped with intermeshing first gear 29 and second gear 30, when cloth be clamped in the first roller and second rolling
Between cylinder, the first roller in the presence of motor when rotating, and by the engagement of first gear and second gear, adds the
One roller and second tin roller quickly can drive second tin roller to rotate the driving force of cloth, fast response time, the fabric dividing dress
Put 4 rear ends for being located at cloth-feeding device 3, fabric dividing device 4 includes cutting platform 31 and cuts lifting positioned at cut the upper end of platform 31
Platform 32, the both ends for cutting platform 31 are fixedly connected with frame 1, and the both ends for cutting platform 31 are respectively equipped with and cut hydraulic cylinder 33, are cut out
Cut the one end of hydraulic cylinder 33 and be connected with cutting lifting platform 32, cut the other end of hydraulic cylinder 33 and be connected with frame 1, cut lifting platform
32 both ends are respectively equipped with the synchronizing wheel 34 of center in the same horizontal line, and one of synchronizing wheel 34 is through fulcrum, bearing with consolidating
It is scheduled on the synchronous motor 35 cut on lifting platform 32 to be connected, another synchronizing wheel 34 is through fulcrum, bearing and cuts lifting platform 32
Be connected, timing belt 36 be cased with described two synchronizing wheels 34, cut compartment of terrain on lifting platform 32 be fixed be parallel to each other it is straight
Line guide rail 37, the line slideway 37 is parallel with timing belt 36, provided with line slideway 37 it is perpendicular cut knife rest 38, cut out
Compartment of terrain is provided with the buckle 40 of the neck 39 being engaged with line slideway 37 and fixed timing belt 36 on cutoff knife rack 38, cuts knife rest
38 are connected on line slideway 37 through neck 39 and are connected by buckle 40 with timing belt 36, cut the lower end of knife rest 38 through bolt
Cutting knife 41 is installed, under the effect of synchronous motor 35, the drive of timing belt 36 cuts knife rest 38 and back and forth transported on line slideway 37
It is dynamic, cut hydraulic cylinder 33 and adjust and cut the radial distance that knife rest 38 is cut on lifting platform 32 and is cut between platform 31 and carry out fabric dividing work
Industry, the both ends for cutting lifting platform 32 are separately installed with to cut the limit switch 42 of the positioning of knife rest 38, described to cut lifting platform 32
Both ends be respectively equipped with compress push rod 43, the upper end of compress push rod 43 and be fixed on the compress hydraulic jack 44 cut on lifting platform 32
It is connected, the lower end of compress push rod 43 is connected with U-type groove 45, and the both ends of the both ends of connecting rod 46 respectively with U-type groove 45 are fixedly connected,
Compress roller 47 is fixed with connecting rod 46, the cloth collector 5 is located at the rear end of fabric dividing device 4, and cloth collector 5 is provided with belt
Delivery platform 48, belt delivery platform 48 are provided with the both ends difference of driving wheel 49 and follower 50, driving wheel 49 and follower 50
It is connected through fulcrum, bearing with frame 1, the fulcrum of the one end of driving wheel 49 is connected through frame 1 through bearing with transmission motor 51,
Conveyer belt 52 is cased with driving wheel 49 and follower 50, described one end of belt delivery platform 48 leans with cutting platform 31, skin
Band delivery platform 48 other end is provided with automatic inspection cloth platform 53, and automatic cloth platform 53 of examining examines cloth automatically in inspection cloth frame 54
The side of platform 53 is provided with detection bar 55, and industrial camera 56 and buzzer 57, the industrial camera are provided with detection bar 55
56 and buzzer 57 be connected respectively with Distribution consoles 2, by image that industrial camera is shot with without flaw cloth
Image is compared, and is not inconsistent if having, and Distribution consoles can start buzzer and be alarmed, and notify operating personnel's timely processing;
Robot fabric winding machine structure is provided between belt delivery platform 48 and automatic inspection cloth platform 53, robot fabric winding machine structure includes manipulator
58th, sucking disc mechanism 59 and control system, the manipulator 58 include mechanical block 60, large-arm joint 61, large arm 62, elbow joint 63,
Forearm 64 and small shoulder joint 65, described one end of large arm 62 are connected through large-arm joint 61 with mechanical block 60, the other end of large arm 62 warp
Elbow joint 63 is connected with forearm 64, and forearm 64 is connected through small shoulder joint 65 with sucking disc mechanism 59, and the large-arm joint 61, elbow close
Section 63, small shoulder joint 65 are connected with servomotor respectively, divide between the large arm 62 and mechanical block 60, large arm 62 and forearm 64
Hydraulic cylinder or cylinder are not connected with, manipulator is hydraulically operated or air pressure driving, and this manipulator is prior art, is not being repeated,
The sucking disc mechanism 59 includes sucker stand 66, and sucker stand 66 is in " king " font, and sucker stand 66 is provided with distance measuring sensor
67, such as LDM301 laser range sensors, have that frequency is high, wavelength is short, diffraction phenomenon is small, particularly good directionality, can
As ray the features such as direction propagation, the lower end of sucker stand 66 equably, compartment of terrain be provided with vacuum cup 68, the vacuum
The transtracheal of sucker 68 is connected with aspiration pump, the servomotor, hydraulic cylinder or cylinder, distance measuring sensor, aspiration pump respectively with
The control system of manipulator is connected, and thus, the signal that Distribution consoles transmit by analyzing image acquisition device, passes through robot
The control system driving manipulator of fabric winding machine structure drives sucking disc mechanism accurately to capture the cloth cut on belt delivery platform, carries out
Transfer, it is then placed within automatic inspection cloth platform, completes to receive cloth operation, vacuum cup strong adsorption force, convenient use, no dirt automatically
Dye, do not hinder workpiece, the cloth that the manipulator 58 drives sucking disc mechanism 59 to capture on belt delivery platform 48 is transferred to automatic inspection
Complete to receive cloth operation on cloth platform 53, the both sides of belt delivery platform 48 that the sucking disc mechanism 59 is captured immediately below cloth, which are provided with, is in
The collection bar 69 of diagonal formula distribution, is gathered and is provided with image acquisition device 70 on bar 69, and cloth is captured by image acquisition device 70
Coordinate instruction robot fabric winding machine structure on diagonal is carried out grabbing cloth and puts cloth, and the sucking disc mechanism 59 is captured immediately below cloth
Supporting plate 71, conveyer belt 52 of the supporting plate 71 between driving wheel 49 and follower 50 are provided with belt delivery platform 48
Inner side, the both ends of supporting plate 71 are fixedly connected with frame 1 respectively, the correction motor 15, photoelectric sensor 16, motor
26th, control the hydraulic jack 28 of the first roller, cut hydraulic cylinder 33, synchronous motor 35, limit switch 42, compress hydraulic jack
44th, the control system for transmitting motor 51, image acquisition device 70 and robot fabric winding machine structure is connected with Distribution consoles respectively, by
This, by the microprocessor reception processing signal in Distribution consoles, starts all parts, complete automatic fabric dividing is received with automatic
Cloth, inspection cloth operation, the utility model due to using said structure, realize automatic calibration cloth, automatic fabric dividing and receive automatically cloth,
The function of cloth is examined, not only substantially increases and cuts yield and operating efficiency, be greatly reduced the intensity of manual work, be easy to push away
It is wide to use.