CN106167035A - Hand-held power transmission dual wheels, narrow wheelspan, trail, the rural area transport vehicle of two gear speed changes - Google Patents
Hand-held power transmission dual wheels, narrow wheelspan, trail, the rural area transport vehicle of two gear speed changes Download PDFInfo
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- CN106167035A CN106167035A CN201610543311.1A CN201610543311A CN106167035A CN 106167035 A CN106167035 A CN 106167035A CN 201610543311 A CN201610543311 A CN 201610543311A CN 106167035 A CN106167035 A CN 106167035A
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- brake
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B1/00—Hand carts having only one axis carrying one or more transport wheels; Equipment therefor
- B62B1/10—Hand carts having only one axis carrying one or more transport wheels; Equipment therefor in which the load is intended to be transferred totally to the wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B1/00—Hand carts having only one axis carrying one or more transport wheels; Equipment therefor
- B62B1/10—Hand carts having only one axis carrying one or more transport wheels; Equipment therefor in which the load is intended to be transferred totally to the wheels
- B62B1/16—Hand carts having only one axis carrying one or more transport wheels; Equipment therefor in which the load is intended to be transferred totally to the wheels involving tiltably-mounted containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/0026—Propulsion aids
- B62B5/003—Combustion engines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D51/00—Motor vehicles characterised by the driver not being seated
- B62D51/004—Motor vehicles characterised by the driver not being seated characterised by the transmission
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D51/00—Motor vehicles characterised by the driver not being seated
- B62D51/04—Motor vehicles characterised by the driver not being seated the driver walking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/20—Off-Road Vehicles
- B60Y2200/22—Agricultural vehicles
- B60Y2200/225—Walk behind vehicles, e.g. motorized wheel barrows
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
A kind of hand-held power transmission dual wheels, narrow wheelspan, trail, the rural area transport vehicle of two gear speed changes, be made up of loading hopper 1, vehicle frame 4, gear drive clutch change speed gear box 5, V belt wheel 6, V-belt 7, tipping bucket handle 8, wheel 9, electromotor 10, right handlebar throttle control handle 13, brake lever 16, left handlebar gear change hand lever 14, flameout switch 15.It is characterized in that: vehicle frame loading installed above hopper, below dress change speed gear box, casing is the thinnest.Both sides dress left and right wheels, forms narrow wheelspan, uses differential drive dual wheels, makes car keep the feature of wheelbarrow, energy pivot turn and traveling on path.Being difficult to skid, grade climbing performance is good.It is difficult to rollover, good stability.Loading capacity doubles, and conevying efficiency is high.With a gear change hand lever, manipulation clutch and speed change, easy to learn simultaneously.It is also adaptable for the place that every bulk transport cars such as urban construction, road construction work, rescue and relief work can not arrive, all to carry various goods and materials, to alleviate the physical work of people with this trail two-wheel car.
Description
Art
The present invention relates to a kind of hand-held power transmission dual wheels, narrow wheelspan, have speed two to keep off speed change trail, rural area fortune
Defeated car, belongs to minitype carrier vehicle.
Background technology
The wheelbarrow (being commonly called as cock car) that rural area uses, can travel on country road, deeply be liked by peasant, but work is strong
Degree is big, and cargo dead-weight is little, tackles it and improves.The motor-driven wheelbarrow of infinitely variable speeds having drive in recent years on market is sold, warp
Retrieval documents (11) Authorization Notice No. CN2704520Y patent specification, also ZL201120021143.2 description and weight
The infinitely variable speeds wheelbarrow that celebrating Jiangbei District produces, is all use speed reduction of motorcycle case, then adds that V carries, chain and sprocket wheel slap together, OK
When sailing, utilizing throttle size to carry out infinitely variable speeds, throttle is little, and power is little, and speed is slow, climbs unable, it is impossible to plays fully and sends out
The performance of motivation.These automotive monocycles also have one common disadvantage is that a wheel contacts to earth, center of gravity is the most unstable, especially
It is the horizontal balance of left and right, does not the most note overturning.So, wheelbarrow installs after power that the raising of cargo dead-weight will be by trammer additional
Muscle power restriction, it is difficult to improve conevying efficiency, it is difficult to large scale application.
Rural area has realized village to village road, and peasant housing progressively carries out urbanization transformation, and residence is from the distance ratio ploughed
Ploughing when living scattered much farther away at Around the house, the road ploughed transported to by various material used for agriculture automobiles, then uses small-sized fortune
Defeated car is transported in ground, field, orchard, vineyard or green house of vegetables.During harvesting, again grain, melon fruits and vegetables are transported to public affairs
Roadside refill automobile transport to city go sell, therefore, trail transport vehicle remains rising product.Urban construction, road
Road maintenance, rescue and relief work etc., every labor operation having material handling all can use small transporting vehicle.
The present invention is to design one on the basis of wheelbarrow to exactly like wheelbarrow, but wheelbarrow can be overcome to exist
Shortcoming, the small transporting vehicle that performance is more excellent.Design problem is to increase a wheel, becomes two-wheel transport vehicle, and two wheels are same
Time by power drive；Necessarily increase the area that contacts to earth, improve the operational efficiency of car, particularly prevent the skidding of muddy path, more
Adapt to travel in rural area.Two wheel design become narrow wheelspan, remain to travel on path, remain to the little turning in original place.Though wheelspan
Narrow, but two tires to contact to earth be two points, better than the lateral stability that wheelbarrow a little contacts to earth, car is difficult to rollover, necessarily subtracts
The support power of light trammer, improves the loading capacity of car.How to realize the effort target that these research topics are the present invention.
Summary of the invention
The hand-held power transmission dual wheels of the present invention, narrow wheelspan, two gear speed changes the transport vehicle of trail, rural area, by vehicle frame,
Loading hopper, gear drive clutch change speed gear box, clutch speed-changing operating mechanism, wheel, brake gear and brake control mechanism, start
Machine and manipulating mechanism of oil throttle composition.The internal combustion engine or the motor that use 1.4 to 2KW power are power.Design speed per hour has speed two
Gear, fast gear speed per hour 7km/h, be equivalent to people's power-walking, slow gear speed per hour 4km/h is close with people's slowly speed of travel.Design maximum
Loading capacity 300kg.
The outward appearance total arrangement feature of the trail transport vehicle of the present invention is: loading hopper is installed in the front upper end of vehicle frame, before vehicle frame
Gear drive clutch change speed gear box and wheel and braking mechanism are installed in lower end, have the machine of adjustable v-shaped belt degree of tightness after vehicle frame below
Installing electromotor and fuel tank on seat, be connected with the V belt wheel of change speed gear box with v-shaped belt, two handlebars stretch to vehicle frame back upper place, left
Switch, equipped with brake lever and engine oil door handle on right handlebar equipped with gear change hand lever and engine misses on handlebar.
The trail transport vehicle of the present invention loads the loading hopper of goods, it is necessary to be designed to detachable dustpan-shaped, flat
Plate shape and turnover loading hopper, could meet all kinds of goods and materials such as much thing of loading, block or liquid.To this end, before vehicle frame
Top is designed with the threaded connection hole installing dustpan-shaped loading hopper, and there are dismountable hinge and flip type loading in the front end of vehicle frame
The chain connection of hopper.Flip type hopper, is made up of tipping bucket handle, leverage, loading hopper, the inner chamber of two frame beams
The lever operating-controlling mechanism being embedded with Turnover bunker is connected with tipping bucket handle, moves tipping bucket handle with hands, and loading hopper can be made to overturn,
Realize unloading automatically.Pull down the bearing pin of hinge axis and lever, be i.e. changed to plate shaped or dustpan-shaped hopper.No matter which kind of being changed carry
Goods hopper all can not affect the center of gravity trim of car.Therefore, the position of centre of gravity of car should design on the axis of wheel, so,
Gear drive clutch change speed gear box is arranged on before wheel axis, and electromotor is arranged on after wheel axis, and loading hopper fills
On change speed gear box wheel, make before and after's weight trim.When empty wagons travels, the negative G of trammer's walking vehicle handle is moderate, just can subtract
The burden of light trammer.During loading, the trim of center of gravity is then carried out the center of gravity of trim car by position before and after contained goods, makes car
Can safety traffic.
The gear drive clutch change speed gear box of the present invention, by gearbox body, V belt wheel, power transmission shaft, travelling gear, bearing, wet type
Steel disc friction clutch and differential mechanism composition.Its design feature is: gearbox dynamic inputs V belt wheel on the first axle, pass with V-arrangement
Dynamic band is connected with electromotor V belt wheel, outer first retarding stage of composition case.The interior power transmission shaft of change speed gear box and travelling gear composition gear ratio
Different speeds two keeps off gear transmission chain, and is unified into two decelerations, speed change levels.Gear shift mode does not use handsetting gear to convert the number of teeth
The traditional mode of ratio, but keep off the deceleration of gear transmission chain front end at speed two, change-speed gearing pays each self installation a set of wet type
Steel disc friction clutch, respectively manipulation two gears of speed from conjunction, just can convert speed two and keep off the transmission of gear transmission chain
Ratio, passes to the differential mechanism in end power output retarding stage by power through the 3rd retarding stage, then connects with wheel with left and right semiaxis
Connect.Two set wet type steel disc friction clutches, two groups of clutch transmission gears of speed pay, flat key, splined shaft, back-up ring, bearing, clutch
Gear hub, axial load sheet, actively clutch-plate, driven clutch plates, clutch base, positioning disk, feather key, clutch axial thrust
Bearing, return spring, CONTACT WITH FRICTION dish and transmission steel ball composition.Its design feature is: the component part of two set clutches is phase
With, the only number of teeth of two groups of change-speed gearings of speed is different, the number of teeth of composition gear pair and equal, and centre-to-centre spacing is identical, but the number of teeth
Ratio varies in size, and forming two gears of speed has respective gear ratio.Multi-disc actively clutch-plate is connected with splined shaft, and multi-disc is driven
Clutch-plate is connected with clutch transmission gear, leaves gap between sheet and sheet, can be freely rotatable, it is impossible to transmission power.Clutch base
Being arranged on change speed gear box, promote positioning disk to move axially with transmission steel ball, clutch-plate is compressed by CONTACT WITH FRICTION dish, and frictional force makes change
Speed gear pair engages, and imparts power to wheel.The compression axial force of clutch is undertaken by clutch shaft axial thrust bearing.To soon
Gear clutch is interconnection interlocking with the manipulation of slow gear clutch, when fast gear gear transmission chain engages, keeps off gear transmission chain soon
Accepting power transmission, speed accelerates；Slow gear gear transmission chain is then in and leaves position, and gear dallies.Otherwise, keep off gear drive slowly
When chain engages, separately, gear dallies fast gear clutch.Such design changes traditional clutch and is divided into conversion gear
Liang Ge mechanism, foot stepping on clutch, hands dials the pattern of gear change hand lever, and the present invention is that a gear change hand lever controlled clutch just energy is real
Now convert speed.So, change speed gear box is named and is gear drive clutch change speed gear box.
The clutch speed-changing operating mechanism of the present invention, by gear change hand lever, rod head, pull bar, driving rocker, bearing pin, keeps off soon
The double rocking arm of linkage, soon keep off cam disc, synchronize link rod, slowly keep off cam disc, the slow single rocking arm of gear linkage, transmission steel ball, Adjusting bolt Adjusting screw dish,
Axial thrust bearing, spring holder, round nut, cam disc mounting seat and clutch base composition.Gear change hand lever is contained in left handlebar
On, it is connected with one end of rod head, pull bar, bearing pin and driving rocker with the double rocking arm of linkage on fast gear cam disc, double rocking arms
The other end be connected with the linkage list rocking arm kept off on cam disc slowly with synchronizing link rod.The steering force energy transmission speed two of gear change hand lever
Cam disc synchronous interaction, it is achieved one control lever two gear transmission chains of manipulation from conjunction.Two speed gear cam discs, point
Not being arranged on the axial thrust bearing of Adjusting bolt Adjusting screw dish, the shape of Adjusting bolt Adjusting screw dish is as a dish type spiral shell axle, on its disk
There are many teeth groove, with crescent moon spanner, swivel nut dish are screwed into cam disc mounting seat, then insert Adjusting bolt Adjusting screw dish with spring holder
Limit it in teeth groove to rotate, and fasten with round nut.Unclamp round nut to press spring holder and separate with teeth groove, turn regulation spiral shell
Cover plate, the contact gap of adjustable clutch-plate, two speed gear cam discs are connected with the transmission steel ball of clutch respectively.Two fast
Have, on the end face circumference of slow gear cam disc, the boss and four grooves that four degree of depth, angle are equal, from groove-bottom plane side to
Boss top plane makes the inclined-plane that four one sides rise, and the inclined-plane angle of climb of two cam discs is the same, oblique on the contrary.When speed change hands
Handle is placed on middle neutral gear position, and the driven by clutches steel ball being connected with two cam discs is exactly in cam groove plane starting point
Neutral position on wait, two clutches leave, and wheel will not rotate.When gear change hand lever slowly pulls back, speed change
Two cam discs of mechanism driving synchronize to anticlockwise, and the transmission steel ball of slow gear clutch rises in face of cam ramp, makees axially to move
Dynamic, promote clutch-plate to engage, it is achieved slow dammed up walking is sailed, and steel ball is crossed summit, inclined-plane and stopped to boss top plane, and steel ball exists
Not having External Force Acting to move in plane, gear change hand lever is locked in slow gear and puts.Meanwhile, clutch is kept off soon
Transmission steel ball rolls in groove-bottom plane, does not move axially, and fast gear clutch remains and leaves, fast gear gear idle running.
When centre position put back to by gear change hand lever, and the transmission steel ball of speed two gear also returns to wait in the starting point of cam groove plane, two
Clutch all leaves, and car is in dead ship condition.Putting when gear change hand lever is pushed forward to fast gear, two cam discs synchronize to the right
Rotating, the transmission steel ball of fast gear clutch rises along inclined-plane, makes to keep off clutch-plate soon and engages, car fast running.The transmission of slow gear
Steel ball rolls in groove plane, and clutch is separate, slow gear gear idle running.As can be seen here, above-mentioned design can realize one
Gear change hand lever just can indiscriminately ad. as one wishes manipulate car at safe on-road travel.
The final drive axle of the gear drive clutch change speed gear box of the present invention, is power transmission shaft, is again the shell of differential assembly
Body, differential mechanism is adjusted by right half-shell, left shell half, copper sheathing, large bevel gear, planet cone pinion, transverse axis, transverse axis pin, back cone seat, back cone
Whole copper packing, flat key and outside framework oil seal composition.The right half-shell of differential mechanism and each self installation copper sheathing and large bevel gear in left shell half.Two halves
Clamping a planet cone pinion transverse axis on the end face of shell, use transverse axis finger setting, transverse axis axis is vertical with axletree.Two planets
Cone pinion, back cone seat and back cone adjust copper packing and are just contained on transverse axis, and adjust copper packing regulation umbrella tooth with the back cone that thickness is different
The back lash of wheel, then, closes up left and right half-shell, then fastens with screw, makes differential assembly.The flat key of left shell half
Upper installation gear h and four shaft gear g engagement.Differential mechanism shell just becomes change speed gear box the 5th (final stage) power output shaft, is contained in change
The rotation on bearings of speed case five axis hole.Make structure the compactest.
The wheel assembly of trail, the rural area transport vehicle of the present invention is identical by two groups of shapes, about installation site relative to car
Wheel is constituted, and is made up of rubber tyre, wheel tyre bead, wheel hub, round nut, tire mounting seat, left half axle and right axle shaft.Tire mounting seat
It is contained on change speed gear box final stage dead eye, fastens with screw, it is impossible to rotate, bear the total weight of car.The axle of tire mounting seat
Extending the short wheel spacing determining two wheels, axle is stretched the longest, and wheel spacing is the widest, and car lateral stability is the best, otherwise, take turns spacing
The narrowest, can double swerve when car travels.The tire mounting seat of the present invention is installed in change speed gear box two sides, makes two tires possess
Certain narrow wheelspan, adds that car depth-width ratio is reasonable in design, and speed and radius of turn manipulation are proper, and car adapts to surely in rural area
Travel on trail.The axle of tire mounting seat is stretched bearing, and wheel hub is just contained on bearing and fastens with round nut, makes wheel hub energy freely
Rotate.Rubber tyre tire bolt is fastened on wheel hub, inflation, dismounts the most very convenient.Tire mounting seat is hollow, built-in
Outside framework oil seal, the splined shaft of left and right semiaxis is had to stretch in the splined hole being each passed through the large bevel gear that outside framework oil seal inserts differential mechanism,
The joint dish of semiaxis is connected with wheel hub with half axle bolt, imparts power to wheel, makes car powered travel.When car linear rows
When sailing, gear drive differential casing (final stage axle) rotates, transverse axis, planet cone pinion, large bevel gear and the revolution of left and right semiaxis,
Planetary bevel gear is paid does not has rotation displacement, car straight-line travelling.When trammer needs to change, walking vehicle is turned handling, is made
The wheel of turning medial obtains turning moment, forces inboard wheel on the one hand to revolve round the sun with final stage axle, on the one hand will be turned by semiaxis
Curved moment passes to differential mechanism large bevel gear and planet cone pinion is produced from indexing shifting, and inboard gear slows down therewith, and does not has
By the outboard wheels of turning moment, still rotating with travelling gear, rotating speed does not becomes, and two wheels produce differential, and car is with turning
The size of moment enters turn condition, and turning moment is the biggest, and radius of turn is the least, it might even be possible to realize with turning medial wheel
Touchdown point is the center of circle, and outboard wheels is around touchdown point pivot turn.After car installs differential mechanism additional, power transmission dual wheels can be realized,
Meet the transport operation of goods and materials.Vehicle frame posterior end is provided with a support, forms at 3 with two wheels of front end and contacts to earth, makes car energy
Road is parked.Rear heel brace is the shortest, and when parking, height rear end, car front end is low, reduces loading height, saves labour.Car
There is rear heel brace, a universal wheel could have been installed on rear heel brace additional, make rear bikini trail transport vehicle？Through sample car pair
Than test, the performance advantage that Handheld two-wheel car is had nothing in common with each other with hand-held tricycle.Hand-held dual wheels is two-wheel when advancing
Contacting to earth, it is the highest that rear heel brace is liftoff, and car travels on ramp, and the height of walking vehicle handle can regulate the pitching balance of car, makes
Car can smoothly travel on ramp, but the hand steered labor intensity of trammer is larger.Hand-held tricycle is that three-wheel touches
Ground, during traveling, hand steered effect simply manipulates turning, it is impossible to the center of gravity of regulation car, laborsaving, but car is in the process of moving, because of
Uneven road, universal wheel ceaselessly swings, and car rocks the most therewith, during descending, wheel 3 contact to earth can not center-of-gravity regulating, the gradient
The biggest center of gravity also strengthens to forward pitch, adds that car rocks and inertia force, and wheel meets with obstacle and easy tip forwards.The knot of test
Opinion is: hand-held tricycle, can only travel, should not use on ramp, mountain region on level road.Therefore, the present invention only supports at caudal leg
One piece of universal wheel installing plate of upper welding, different according to road conditions for trammer, oneself decide whether universal wheel is installed.
The brake gear of trail, the rural area transport vehicle of the present invention, by brake shoes mounting disc, brake shoes, locating dowel, returns
Position spring, eccentric shaft composition.Being welded with brake block mounting disc in the tire mounting seat of left and right, brake shoes is installed in brake block peace
The locating dowel of sabot and eccentric shaft both sides, strain with returning pull-spring.Mounting tyre on the cylindrical of wheel hub, inner circle then with brake shoes
Become gap to connect, become brake hubs, so, wheel hub is the center of wheel, is again the center of brake gear.One part is taken into account
Two kinds of functions.
The brake control mechanism of trail, the rural area transport vehicle of the present invention, is drawn by brake driving rocker, rod head, regulation
Bar, adjusting yoke joint, rocker arm shaft, rocker arm bracket, bearing pin, linkage rocking arm, king pin, long draw, brake lever mounting seat and stop
Cart handle forms.Droop brake lever is lifted on below the brake lever mounting seat of right handlebar, except brake lever, handle are installed
Seat and long draw are that outside single part, other part shape is identical, are all the most respectively with the brake shoes of left and right wheels the most even
Connect.During assembling, adjust pull bar length, the braking gap of two wheels can be adjusted in certain scope, it is achieved a brake
Handle manipulates the brake of two wheels simultaneously, makes brake not run limit, and car will not be turned voluntarily because brake is inconsistent.Stop
Che Shi, holds brake lever, and drag link mechanism transmission eccentric shaft rotates, and opens brake shoes and rubs with wheel hub inner circle, plays brake system
Action is used.Hold size and the order of importance and emergency that brake lever is exerted oneself, determine gently to stop, put and stop or emergency brake.Releasing of brake handle, returns
Brake shoes is retracted original place by position spring, and brake is i.e. released from.
The manipulating mechanism of oil throttle of trail, the rural area transport vehicle of the present invention, by throttle control handle, steel wire rope bracing wire, regulation bolt,
Return spring, flameout switch and electric wire composition.Throttle control handle is arranged on the top of right handlebar, with steel wire rope bracing wire and engine oil
Door connects.Engine misses switch is contained on left handlebar, with electric wire and engine ignition connection.Electromotor uses the right side after starting
Finger stirs throttle control handle, and steel wire rope bracing wire Transmission Engine throttle is opened greatly, and rotating speed rises, under reversible control then engine speed
Fall, handiness is flexible.When needing to stop, left finger down flameout switch, firing circuit disconnects, engine dies.
The engine of the present invention also can use electric-motor drive dual wheels, therefore, is provided with dress on internal combustion engine installing plate side
Instrument and the reserve tank of oil drum, Electric Drive technology is the most perfect in the future, after charging service is universal, internal combustion engine can be changed to electricity
Motivation, accumulator can be placed in reserve tank, and engine conversion is very convenient.
Foregoing invention content, through sample car, checking on probation, is entirely capable of reaching to design requirement.Below in conjunction with the accompanying drawings and tool
Body embodiment, is described in further detail the present invention.
Accompanying drawing explanation
Accompanying drawing 1 is the hand-held power transmission dual wheels of the present invention, narrow wheelspan, trail, the rural area transport vehicle of two gear speed changes
The left schematic side view of total arrangement.
Accompanying drawing 2 is the hand-held power transmission dual wheels of the present invention, narrow wheelspan, trail, the rural area transport vehicle of two gear speed changes
Total arrangement front-view schematic diagram.
The A figure of accompanying drawing 3 is that attitude figure is parked in trail, the rural area transport vehicle of the present invention, and B figure is transport condition figure, and C figure is to unload
Goods state diagram.
Accompanying drawing 4 is the floor map of the gear transmission chain of the gear drive clutch change speed gear box of the present invention.
Accompanying drawing 5 is the elevational schematic view of the gear transmission chain of the gear drive clutch change speed gear box of the present invention.
Accompanying drawing 6 is the structure signal of the fast gear wet type steel disc friction clutch of the gear drive clutch change speed gear box of the present invention
Figure.
Accompanying drawing 7 is the clutch speed-changing operating mechanism schematic diagram of the present invention.
Accompanying drawing 8 is that the speed two of the present invention keeps off cam disc expansion schematic diagram.
Accompanying drawing 9 is the differential design schematic diagram of the present invention.
Accompanying drawing 10 is the wheel assembly schematic diagram of the present invention.
Accompanying drawing 11 is the brake gear schematic diagram of the present invention.
Accompanying drawing 12 is brake control mechanism and the manipulating mechanism of oil throttle schematic diagram of the present invention.
Tool present embodiment
Hand-held power transmission dual wheels shown in accompanying drawing 1, accompanying drawing 2, narrow wheelspan, trail, the rural area transport vehicle of two gear speed changes
The left schematic side view of total arrangement and front-view schematic diagram, be by loading hopper 1, hopper hinge 2, bumper 3, vehicle frame 4, gear
Transmission clutch gearbox 5, V belt wheel 6, v-shaped belt 7, tipping bucket handle 8, wheel assembly 9, electromotor 10, engine bearer 11, after
Heel brace 12, throttle control handle 13, gear change hand lever 14, flameout switch 15, brake lever 16, left handlebar 17, right handlebar 18, composition.Respectively
Parts mounting arrangement on vehicle frame to be tried one's best with respect to the depth-width ratio of car, center of gravity；Handling goods and easy to use etc. many
Aspect, the focus point of this two-wheel car is placed on wheel axis, to this end, loading hopper 1 and gear drive clutch change speed gear box 5, installs
Before car, electromotor 10 and left and right handlebar 17,18 are contained in after car, after making center of gravity before and after car the most flat, stop
When putting, rear heel brace 12 contacts to earth, and loading hopper 1 rear end reduces, and freights laborsaving, lifts left and right handlebar 17,18, and front bumper 3 contacts to earth,
Convenient for unloading.Two handlebars divide left and right to separate backward, and rope starter electromotor does not hinders, and left handlebar 17 fills gear change hand lever 14 and puts out
Fire switch 15, charge of oil door handle 13 and brake lever 16 on right handlebar 18, it is handy to operate.
In accompanying drawing 3 A figure be trail, the rural area transport vehicle of the present invention park attitude schematic diagram, with the horizontal attitude of accompanying drawing 1
Whether the loading height of contrast verification car and rope starter electromotor facilitate.B figure is the travel condition of trail, rural area transport vehicle
Schematic diagram, checking car rake height is if appropriate for the arm length of trammer, and handlebar is provided with regulating sleeve 19, can be adjusted by handle
To suitable position.C figure is the tipping bucket unladen state schematic diagram of trail, rural area transport vehicle, during unloading, is lifted by handlebar, makes insurance
Thick stick 3 contacts to earth, and loading hopper 1 leans forward, then draws tipping bucket handle 8, lift arm 20 and transmission levers 21 by loading hopper 1 along hopper hinge
2 upsets, it is achieved automatically unloading, reverse operating then returns to parked state.
Accompanying drawing 4, accompanying drawing 5 be the speed two of the gear drive clutch change speed gear box 5 of the present invention keep off gear transmission chain plane and
Vertical section schematic diagram, is by gearbox body 22, V belt wheel 6, bearing 23, slow gear wet type steel disc friction clutch 24, keeps off wet type soon
On steel disc friction clutch 25, differential mechanism 26, two, two times, three, four, five totally 6 power transmission shafts and a/b, k/c, m/d, e/f,
G/h totally 5 groups of gear pair compositions.There is V belt wheel 6 on change speed gear box one axle, be connected with electromotor V belt wheel with v-shaped belt 7, form case
Outer retarding stage.Not using first manipulation clutch to separate with power in change speed gear box, then, then handsetting gear carries out the tradition of speed change and does
Method, but in case, set the gear transmission chain that two gear ratios are different, respectively by keeping off wet type steel disc friction clutch 24 He slowly
Fast gear wet type steel disc friction clutch 25, not handsetting gear, only with a gear change hand lever 14, linkage two clutches of manipulation, real
Existing clutch speed-changing.Accompanying drawing 4 and accompanying drawing 5 are the schematic diagrams of gear transmission chain:
Keep off gear transmission chain soon:
a/b x k/c x e/f x g/h
Slowly gear transmission chain is kept off:
a/b x m/d x e/f x g/h
Drive differential mechanism and dual wheels to rotate again through the power of gear transmission chain speed change, make car move forward.
Accompanying drawing 6 is the structure signal of the fast gear wet type steel disc friction clutch of the gear drive clutch change speed gear box 5 of the present invention
Figure, by upper two axles 27, gear b, back-up ring 28, bearing 29, fast gear clutch gear k, flat key 30, clutch tooth hub 31, axial load
Sheet 32, driven clutch plates 33, actively clutch-plate 34, CONTACT WITH FRICTION dish 35, spring-leaf retainer 36, clutch shaft axial thrust bearing 37,
Feather key 38, positioning disk 39, clutch base 40, return spring 41, spring holder 42, round nut 43, Adjusting bolt Adjusting screw dish 44, convex
Wheel disc mounting seat 45, fast gear cam disc 46, transmission steel ball 47, axial thrust bearing 48, the double Rocker arm 49 of linkage, composition.Upper two
Equipped with gear b on axle 27, drive upper two axles 27 to rotate, on the cylindrical of fast gear clutch tooth hub 31 with flat key 30 with keep off clutch tooth soon
Wheel k connects, and the endoporus of clutch tooth hub 31 installs bearing 29, back-up ring 28 is connected with upper two axles 27.Upper two axles 27 rotate, gear k
Bearing dallies.Equipped with axial load sheet 32 and multi-disc actively clutch-plate 34 on the splined shaft of upper two axles 27, with upper two axles 27
Rotate.Teeth groove, the external tooth of driven clutch plates 33 is had to rotate with gear k in being contained in teeth groove on the housing of clutch tooth hub 31.Actively
Clutch-plate 34 and driven clutch plates 33 possess certain gap, fast gear clutch gear k idle running.When operating-controlling mechanism will active clutch-plate
34 and driven clutch plates 33 be pressed to engagement state, driving torque is passed to driven gear c (see accompanying drawing by fast gear clutch gear k
5), make to keep off gear transmission chain soon and be in joint operating condition, and keep off gear transmission chain idle running slowly.Back to seeing accompanying drawing 6, clutch
Device seat 40 screw is fastened on change speed gear box, and seat is worked as cam disc 46 built with positioning disk 39 and feather key 38 and promoted transmission steel ball 47
Making positioning disk 39 can only move axially in clutch base 40 under the guiding of feather key 38, positioning disk 39 is built with clutch shaft
When axial thrust bearing 37 and CONTACT WITH FRICTION dish 35 engage with clutch-plate, CONTACT WITH FRICTION dish 35 rotates and by axial thrust with clutch-plate
Pass to clutch shaft axial thrust bearing 37 undertake, make clutch run well in the engaged condition.Cam disc 46 releases biography
The thrust of dynamic steel ball 47, the six roots of sensation return spring 41 of spring-leaf retainer 36 promotes CONTACT WITH FRICTION dish 35, clutch shaft to thrust axis
Hold 37 and positioning disk 39 return in situ, separately, gear is in idling conditions to clutch-plate.
Accompanying drawing 7 is the clutch speed-changing operating mechanism schematic diagram of the present invention, by gear change hand lever 13, rod head 50, pull bar 51,
Driving rocker 52, bearing pin 53, the fast double Rocker arm 49 of gear linkage, fast gear cam disc 46, transmission steel ball 47, synchronize link rod 54, keep off connection slowly
Dynamic single Rocker arm 55, slow gear cam disc 56, transmission steel ball 47, Adjusting bolt Adjusting screw dish 44 (see accompanying drawing 6), axial thrust bearing 48, spring
Alignment pin 42, round nut 43, cam disc mounting seat 45 and clutch base 40 form.
Accompanying drawing 8 is that the cam face of gear cam disc 46 and slow gear cam disc 56 soon launches the operating principle with transmission steel ball 47
Figure.
Gear change hand lever 13 is contained on left handlebar 16, pushes away forward gear change hand lever 13, by steering force through rod head 50, pull bar
51, driving rocker 52, bearing pin 53, pass to keep off soon the double Rocker arm 49 of linkage, synchronize link rod 54, the slow single Rocker arm 55 of gear linkage, drive
Speed two keeps off the counter-clockwise synchronous rotary of cam disc 46,56.Speed two keep off cam disc 46,56 be attached separately to Adjusting bolt Adjusting screw dish 44 (see
Accompanying drawing 6) axial thrust bearing 48 on, the disk of Adjusting bolt Adjusting screw dish 44 has many teeth groove, with crescent moon spanner by swivel nut dish 44
It is screwed in cam disc mounting seat 45, makes cam disc contact with transmission steel ball, and adjust the gap of clutch-plate, then position with spring
Pin 42 inserts in the teeth groove of Adjusting bolt Adjusting screw dish 44, limits it and rotates, and fastens with round nut 43.The end face circumference of two cam discs
On have the boss and four grooves that four length is equal, what four one sides rose made in the side, baseplane of groove to boss top plane
Inclined-plane, the inclined-plane angle of climb of two cam discs is the same, oblique on the contrary, (see accompanying drawing 8) expanded view.Speed two keeps off clutch base 40
(see accompanying drawing 6,7) has four halving holes, respectively puts a transmission steel ball 47 in hole, and steel ball is limited in hole and contacts work with cam disc
Elevating movement, transmission gear change hand lever 13 operating torque, it is achieved the joint of clutch-plate with separate.Visible go-cart from accompanying drawing 7,8
People pushes away forward gear change hand lever 13, two cam disc linkage rotating Vortexes of speed, with the transmission steel ball 47 in starting point, keeps off soon
Steel ball rises on boss end face terminal along inclined-plane, promotes clutch-plate to engage, and meanwhile, the transmission steel ball 47 of slow gear is then slowly
Being rolled on boss vertical by limit dead in the groove plane of gear cam disc 56, transmission steel ball 47 is locked by the thrust of clutch
In the plane of two cam discs, gear change hand lever 13 does not have External Force Acting clutch will not off-gear automatically.When gear change hand lever 13
Retracting centre position, transmission steel ball 47 returns to starting point, and change speed gear box is in middle idling conditions.Gear change hand lever 13 pulls back, on
State action to carry out the most on the contrary, repeat no more.
Accompanying drawing 9 is the differential design schematic diagram of the present invention, and differential assembly is by right half-shell 56, copper sheathing 57, large bevel gear
58, planet cone pinion 59, transverse axis 60, transverse axis pin 61, back cone seat 62, back cone adjust copper packing 63, flat key 64, outside framework oil seal 65,
Form with left shell half 66.Each in differential mechanism left and right half-shell 56,66 equipped with copper sheathing 57, large bevel gear 58 is contained in copper sheathing 57, can be certainly
By rotating.Clamp a planet cone pinion transverse axis 60 on the end face of left and right half-shell, position with transverse axis pin 61.The axis of transverse axis with
Wheel axis is vertical, and two planet cone pinions 59, back cone seat 62 and back cone adjust copper packing 63 and be just contained on transverse axis 60, and by thickness
Thin different back cone adjusts copper packing 63 and adjusts the back lash that bevel gear is paid, then left and right half-shell is closed up, and fastens with screw, makes
Become differential assembly 24..Installing gear h and four shaft gear g engagement on the flat key 64 of left shell half 66, differential mechanism shell just becomes
For the 5th power transmission shaft of change speed gear box, it is contained in the rotation on bearings of change speed gear box five axis hole.
Accompanying drawing 10 is the left wheel structural representation of wheel assembly of the present invention, and two-wheel car is identical by two groups of shapes, installation position
Put the relative wheel in left and right to constitute, the left wheel shown in this figure by left and right semiaxis 67, half axle bolt 68, tire 69, wheel tyre bead 70,
Wheel hub 71, round nut 72, bearing 73, tire bolt 74 and tire mounting seat 75 form.Tire mounting seat 75 is arranged on change speed gear box
In 5th axis hole both ends of the surface, fasten with bolt, it is impossible to rotate, bear whole loads of car.The bearing 73 of tire mounting seat 75
Upper installation wheel hub 71, fastens with round nut 72, and tire 69 is contained on wheel tyre bead 70, is fastened on wheel hub with tire bolt 74 after inflation
On 71.Left and right semiaxis 67 inserts the gamp tooth of differential mechanism respectively in the axis hole of left and right tire mounting seat 75 through outside framework oil seal 65
In the splined hole of wheel 58, the joint dish of semiaxis 67 fastens with wheel hub 71 with half axle bolt 68, imparts power to wheel, drives car
Sub-line is sailed.
Accompanying drawing 11 is the braking mechanism schematic diagram of the brake gear left wheel of the present invention, and the brake gear of two-wheel car is with two
The expanding brake type braking part composition that group shape is identical, left wheel braking mechanism shown in this figure, by brake shoes 76, brake block peace
Sabot 77, locating dowel 78, return spring 79, eccentric shaft 80 and brake driving rocker 81 form.Tire mounting seat 75 is provided with stops
Car sheet mounting disc 77, one end of two half block brake shoes 76 is stuck in locating dowel 78, and the other end contacts with eccentric shaft 80, uses return
The pulling force clamping of spring 79, keeps certain braking gap with the inner circle of wheel hub 71, and eccentric shaft 80 is with brake driving rocker 81 even
Connecing, rotate brake driving rocker 81, expanding brake type brake shoes 76 is opened and is contacted generation friction with wheel hub 71 inner circle by eccentric shaft 80,
Play skidding effect.
Accompanying drawing 12 is brake control mechanism and the manipulating mechanism of oil throttle schematic diagram of the present invention, and braking mechanism is shaken by transmission of braking
Arm 81, rod head 82, adjusting yoke 83, adjusting yoke joint 84, rocker arm shaft 85, rocker arm bracket 86, bearing pin 87, linkage rocking arm
88, king pin 89, long draw 90, brake lever mounting seat 91 and brake lever 16 form.During assembling, first stopping left and right tire
Car driving rocker 81, rod head 82, adjusting yoke 83 and adjusting yoke joint 84 and rocker arm shaft 85, rocker arm bracket 86, bearing pin 87
Connect with linkage rocking arm 88.Adjusting yoke 83 and adjusting yoke joint 84 is utilized to be adjusted to identical by the brake block of left and right wheels
Braking gap, moves linkage rocking arm 88, and two tires can brake simultaneously.In the brake lever mounting seat 91 of right handlebar 18 equipped with
Brake lever 16, is connected with linkage rocking arm 88 with long draw 90, king pin 89.Hold brake lever 16, long draw 90, king pin
Brake torque is passed to the rocking arm 88 that links by 89, makes the eccentric shaft 80 of two wheels brake shoes be opened, it is achieved to manipulate one
Brake lever, brakes the braking action of two wheels simultaneously.
Manipulating mechanism of oil throttle is by throttle control handle 13 and steel wire rope bracing wire, flameout switch 15 (seeing accompanying drawing 1, accompanying drawing 2) and electricity
Line forms.Right handlebar 18 is installed throttle control handle 13, is connected with engine oil door trip with steel wire rope bracing wire, engine misses
Switch 15 is contained on left handlebar 17, is connected with engine igniting circuit with electric wire, after electromotor starts, stirs oil by hand thumb
Door handle 13 can the lifting of maneuvering engine rotating speed, with left finger down flameout switch 15, engine dies, handle very
Convenient, flexible.
Claims (11)
1. hand-held power transmission dual wheels, narrow wheelspan, trail, a rural area transport vehicle for two gear speed changes, by vehicle frame, loading material
Bucket, gear drive clutch change speed gear box, clutch speed-changing operating mechanism, wheel, brake gear and brake control mechanism, electromotor and oil
Gate operator form, it is characterized in that: the front upper end of vehicle frame install flip type loading hopper, the front lower end of vehicle frame install gear drive from
Close change speed gear box and wheel and braking mechanism, have below after vehicle frame on the support of adjustable v-shaped belt degree of tightness and electromotor and oil are installed
Case, is connected with change speed gear box V belt wheel with v-shaped belt, and two handlebars stretch to vehicle frame back upper place, on left handlebar equipped with gear change hand lever and
Engine misses switch, equipped with brake lever and engine oil door handle on right handlebar.
The most according to claim 1, the flip type loading hopper of trail, rural area transport vehicle, by tipping bucket handle, leverage, load
Goods hopper forms, and it is characterized in that: the chain connection of the hinge of vehicle frame front end and flip type loading hopper, two frame beams interior
Chamber is embedded with the leverage of Turnover bunker and is connected with tipping bucket handle.
The most according to claim 1, the gear drive clutch change speed gear box of trail, rural area transport vehicle, by gearbox body, V belt wheel, biography
Moving axis, travelling gear, bearing, wet type steel disc friction clutch and differential mechanism composition, is characterized in that: change speed gear box V belt wheel V-arrangement passes
Dynamic band is connected with electromotor V belt wheel, change speed gear box is interior be made up of with travelling gear power transmission shaft gear ratio different keep off gear drive soon
Chain and keep off gear transmission chain slowly, and it is unified into two decelerations, speed change levels, pay at the change-speed gearing of gear transmission chain front end and each pacify
Fill a set of wet type steel disc friction clutch, manipulation gear transmission chain from conjunction, impart power to the differential of final drive
Device, then be connected with wheel through wheel semiaxis.
The most according to claim 3, two set wet type steel disc friction clutches of gear drive clutch change speed gear box, by speed two groups
Clutch transmission gear is paid, splined shaft, back-up ring, bearing, clutch tooth hub, axial load sheet, actively clutch-plate, driven clutch plates,
Clutch base, positioning disk, feather key, clutch shaft axial thrust bearing, return spring, CONTACT WITH FRICTION dish and transmission steel ball composition,
It is characterized in that: the component part of two set clutches is identical, the only number of teeth of two groups of change-speed gearings of speed is different, forms gear
The number of teeth and equal paid, centre-to-centre spacing is identical, but gear ratio varies in size, and gear ratio speed is different；Multi-disc actively clutch-plate and flower
Key axle connects, and multi-disc driven clutch plates is connected with clutch gear, and the manipulation of two set clutches is interconnection interlocking, with a handle
Handling and keep off joint soon, slow gear then leaves, otherwise, keeping off joint slowly, fast gear then leaves.
The clutch speed-changing operating mechanism of trail, rural area transport vehicle the most according to claim 1, by gear change hand lever, rod head,
Pull bar, driving rocker, bearing pin, the fast double rocking arm of gear linkage, soon keep off cam disc, synchronize link rod, keep off cam disc slowly, slow gear linkage is singly shaken
Arm, transmission steel ball, Adjusting bolt Adjusting screw dish, axial thrust bearing, spring holder, round nut, cam disc mounting seat and clutch base
Composition, is characterized in that: gear change hand lever is contained on left handlebar, with rod head, pull bar, bearing pin and driving rocker with keep off cam disc soon
On one end of the double rocking arm of linkage connect, the other end of double rocking arms synchronizes link rod and connects with the linkage list rocking arm on slow gear cam disc
Connect.
Fast gear cam disc the most according to claim 5 and keep off cam disc slowly, is characterized in that: the end of two speeds gear cam discs
Boss and four grooves that four degree of depth, angle are equal is had, from groove-bottom plane one on the circumference of face. side is made to boss top plane
The inclined-plane that four one sides rise, the inclined-plane angle of climb of two cam discs is the same, oblique on the contrary.
The most according to claim 3, the differential mechanism of gear-driving speed-variable case end, by right half-shell, left shell half, copper sheathing, gamp tooth
Wheel, planet cone pinion, transverse axis, transverse axis pin, back cone seat, back cone adjust copper packing, flat key and outside framework oil seal composition, it is characterized in that:
Each self installation copper sheathing and large bevel gear in the half-shell of differential mechanism left and right, the end face of two half-shell clamps a planet pinion transverse axis,
Positioning with cotter axle, transverse axis axis is vertical with wheel axis, two planet cone pinions, and back cone seat and back cone adjust copper packing just dress
On transverse axis, then, left and right half-shell is closed up, make big cone pinion engage, then become differential assembly with screw fastening, then
Final drive gear is installed on left shell half cylindrical, is allowed to and becomes change speed gear box final stage power output shaft.
The most according to claim 1, the wheel assembly of trail, rural area transport vehicle is identical, about installation site by two groups of shapes
Relative wheel is constituted, by rubber tyre, wheel tyre bead, wheel hub, bearing, round nut, tire mounting seat, left half axle and right axle shaft group
Becoming, it is characterized in that: tire mounting seat is contained in change speed gear box final stage Y-axis bearing bore, fasten with screw, the axle of tire mounting seat is stretched
Upper dress bearing and wheel hub, fix with round nut, and rubber tyre and wheel tyre bead tire bolt are fastened on wheel hub, tire mounting seat
Being hollow, built with outside framework oil seal, the splined shaft of left and right semiaxis is stretched, and is each passed through outside framework oil seal and inserts differential mechanism large bevel gear
Splined hole in, the joint dish of semiaxis is connected with wheel hub with half axle bolt.
The most according to claim 1, the brake gear of trail, rural area transport vehicle, by brake block mounting disc, brake shoes, location
Post, returning pull-spring, eccentric shaft form, it is characterized in that: brake shoes is installed in locating dowel and the eccentric shaft two of brake block mounting disc
Side, strains with returning pull-spring.
Brake control mechanism the most according to claim 1, by brake driving rocker, rod head, adjusting yoke, regulation
Rod head, rocker arm shaft, rocker arm bracket, bearing pin, linkage rocking arm, king pin, long draw, brake lever mounting seat and brake lever group
Become, it is characterized in that: in component part, except brake lever mounting seat, brake lever and long draw are in addition to one-piece part, other part
Shape is identical, is all to be connected with the brake shoes of left and right wheels the most respectively；Adjust pull bar length, can stopping two wheels
Workshop gap is adjusted in certain scope, it is achieved a brake lever manipulates the brake of two wheels simultaneously.
The engine oil-valve operation mechanism of 11. trail, rural area transport vehicle according to claim 1, by throttle control handle, steel wire rope
Bracing wire, regulation bolt, return spring, flameout switch and electric wire composition, is characterized in that: throttle control handle is contained on right handlebar, uses steel
Cord bracing wire is connected with engine throttle, and flameout switch is contained on left handlebar, is connected with engine igniting circuit with electric wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610543311.1A CN106167035A (en) | 2016-07-01 | 2016-07-01 | Hand-held power transmission dual wheels, narrow wheelspan, trail, the rural area transport vehicle of two gear speed changes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610543311.1A CN106167035A (en) | 2016-07-01 | 2016-07-01 | Hand-held power transmission dual wheels, narrow wheelspan, trail, the rural area transport vehicle of two gear speed changes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106167035A true CN106167035A (en) | 2016-11-30 |
Family
ID=58065209
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610543311.1A Pending CN106167035A (en) | 2016-07-01 | 2016-07-01 | Hand-held power transmission dual wheels, narrow wheelspan, trail, the rural area transport vehicle of two gear speed changes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106167035A (en) |
Cited By (6)
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| CN107600120A (en) * | 2017-10-24 | 2018-01-19 | 北京交通大学 | A kind of electric stair climbing mechanism based on slider-crank mechanism |
| CN109987125A (en) * | 2019-05-08 | 2019-07-09 | 西南石油大学 | A kind of strawberry transport vehicle |
| CN110240019A (en) * | 2019-01-30 | 2019-09-17 | 龙再根 | A kind of Multi-function tool cart |
| CN110356445A (en) * | 2019-08-13 | 2019-10-22 | 张楼锋 | A kind of cart that medical field uses |
| CN112722020A (en) * | 2018-12-27 | 2021-04-30 | 潘燕瑜 | A handling device for road bridge building material |
| US20220258782A1 (en) * | 2021-02-18 | 2022-08-18 | High Life Systems LLC | Modular cart |
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| CN110356445A (en) * | 2019-08-13 | 2019-10-22 | 张楼锋 | A kind of cart that medical field uses |
| CN110356445B (en) * | 2019-08-13 | 2020-08-18 | 张楼锋 | Shallow that medical field used |
| US20220258782A1 (en) * | 2021-02-18 | 2022-08-18 | High Life Systems LLC | Modular cart |
| US11745776B2 (en) * | 2021-02-18 | 2023-09-05 | High Life Systems LLC | Modular cart |
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