CN201980307U

CN201980307U - Novel powered hand-held wheelbarrow

Info

Publication number: CN201980307U
Application number: CN2011200211432U
Authority: CN
Inventors: 陈万才
Original assignee: 陈晓春
Priority date: 2011-01-06
Filing date: 2011-01-06
Publication date: 2011-09-21
Anticipated expiration: 2021-01-06

Abstract

The utility model relates to a novel powered hand-held wheelbarrow, which comprises a wheelbarrow frame 1, a hydraulic clutch gear box 2, a large V-shaped belt wheel 3, a V-shaped belt 4, a wheel 5, an engine 6, an engine V-shaped belt wheel 7, an accelerator handle 8, a brake handle 9, an extinguishing switch 10 and a variable-speed handling ring 11. The novel powered hand-held wheelbarrow is characterized in that the gear box is mounted in front of the left side of the wheel, and the engine is mounted behind the right side of the wheel, so that the gravity center balancing is good. The novel powered hand-held wheelbarrow is designed by improving a conventional infinitely variable-speed powered wheelbarrow which has the defect that in a running process, when the conventional infinitely variable-speed powered wheelbarrow runs slowly, an engine operates slowly too, so that the maximum function of the engine can not be played. While the hydraulic clutch gear box with variable gears and high gearing efficiency is adopted in the utility model, so that when the novel powered hand-held wheelbarrow runs, a user only needs to pull the variable-speed handling ring 11 with a left index finger and operate a hydraulic clutch so as to achieve the shifting between a quick gear and a slow gear; when an accelerator is opened widely, the novel powered hand-held wheelbarrow has a strong hill climbing capability in the course of gear-shift driving; and the novel powered hand-held wheelbarrow has a big load-carrying capacity and is favorable for popularization and application.

Description

Novel drive hand-held type wheelbarrow

Affiliated field

The utility model relates to a kind of drive, uses the hydraulic actuated gears to engage and disengage, and the hand-held type wheelbarrow of calamity, slow two retaining change speed gear boxs is arranged, and belongs to small transporting vehicle.

Background technology

Wheelbarrow can travel on country lane, is rural area transport trolley commonly used, because load carrying ability is little, labour intensity is big, reasons such as inefficiency make a lot of people all want to install power additional on wheelbarrow, makes it to become staff and helps the new vehicle of powered travel.Several years ago, there is the single-wheel barrow of drive to sell on the market, because of having many defectives not too to be suitable for to fail large scale application on the technical design.The equipment of small motor wheelbarrow that produces of documents [11] Granted publication CN2704520Y patent specification and Jiangbei District, Chongqing City by retrieval, they all adopt V belt wheel or odontoid belt drive stepless speed variator to realize that stepless change travels.So-called stepless change is meant not retaining of variable speed operation, but the speed change magnitude range is arranged, and engine revolution also has the height restriction, realizes that in conjunction with the rotating speed of plus-minus driving engine the stepless change of wheelbarrow travels again in this range of infinitely variable speeds.And that the moving velocity of wheelbarrow must be designed to is close with people's the speed of travel, crosses inefficently slowly, and too fast manpower does not again prop up.The speed of a motor vehicle is placed on retaining slowly during various goods carrying vehicle up-hill journey, and engine speed strengthens, and makes wheel obtain big moment of torsion, and the car climbing just effectively.And there is defective in existing stepless change wheelbarrow in the coupling design of the best speed of a motor vehicle and driving engine best power, the speed of a motor vehicle is slack-off during upward slope, engine speed also will reduce, can not bring into play the maximum function of driving engine, add that the stepless change driving efficiency that skids is low, seeming, climbing is unable, also will add the manpower hand push, becomes the hand barrow of genuine drive.The utility model must improve this stepless change wheelbarrow, makes it to become the wheelbarrow that the staff of drive is helped, and really reaches the purpose that reduces labour intensity, improves transport capacity

The design wheelbarrow must be noted that the car center of gravity the pitching balance, about balance in roll, center of gravity is low.And the single-wheel barrow of existing drive all is placed on left back of car to toric transmission, driving engine, the front portion of hull is designed to hollowly again, and the inside packing material reaches gravity balance.This counterweight measure equals to have carried on the back a burden, is white work done, and the trim problem is just noted in the installation site that should be improved to each parts and member when design.

Wheel is contained on the vehicle frame, one section terrain clearance of guaranteeing driving safety overhead will be arranged at the vehicle frame bottom, and existing wheelbarrow is contained in driving engine and guarantees that again terrain clearance just only installs bearing support additional at the wheel shaft two ends below hull (cargo loading plate) back, raising hull increases vehicle frame, center of gravity has also improved, it is unstable that balance in roll more becomes, and not only loading effort is also overturned about easily.Also have, the axletree two ends are contained on the bearing support, and changing of tire will be torn parts such as toric transmission, brake gear open, keeps in repair very inconvenient.

Sell the wheelbarrow shoulder belt of not rationing, but the design wheelbarrow to consider to join the factor of shoulder belt.Because, push away the bound shoulder belt of wheelbarrow, have an high regard for when carrying, the two hand-tight handlebars of holding, two arms are guaranteed lateral stability to the stretching formation gusseted of shoulder belt stretching.If engine throttle adopts the rotary throttle on the motorcycle handlebar, to have an high regard for when carrying, the shoulder belt bolt is on throttle, and the plus-minus throttle is necessarily very difficult.Push away the easiest rollover of wheelbarrow, so the handlebar hand-holding segment is smooth.If rotary throttle is contained on the handlebar, shoulder belt can not in time come off when roll-over accident took place, and will connect the people and be with car to be dragged together to turn over, and such design is inadvisable.Also have, it is long that (car pin) supported in the back, and the pin spacing is big, and when travelling on narrow winding trail or on the springboard in building site, the car pin can not contact to earth, and can't park wheelbarrow.

Summary of the invention

The purpose of this utility model provides a kind of with spark ignition engine drive gear speed change case, the hand-held type wheelbarrow that travels with hydraulic handle steerage gear clutch variable block.Form by vehicle frame, driving engine and accelerator operating device, hydraulic efficiency gear, hydraulic clutch speed-changing gear box and gear controller, wheel and brake gear.The goods carriage lower-left face of vehicle frame is installed the hydraulic clutch speed-changing gear box, wheel-mounted on the power take-off shaft that stretches out below behind the right side of case, and the power input shaft above case preceding stretches to right front of vehicle frame and is connected with V belt wheel greatly from the wheel front; (determine all around with the trammer position, down together), driving engine is contained on the frame of right back adjustable V-belt degree of tightness of goods carriage, the driving engine first half exposes plane on the goods carriage, the V belt wheel of lower part then below goods carriage, is connected with big V belt wheel with V-belt, gives speed-changing gear box with the transmission of power of driving engine, behind gear reduction, drive wheel, make it to become novel drive hand-held type wheelbarrow.

Vehicle frame is welded with rectangular steel tube and round steel pipe by left frame, correct frame, middle stull, goods carriage, retaining shelf, bumper/spoiler, left and right sides handlebar and the car pin of connecting.Be welded with the speed-changing gear box erecting stage on the left frame, be welded with the erecting stage of big V belt wheel seat on the correct frame, left and right sides framework is welded into a cavity with middle stull, wheel just is installed in the cavity, weldering cargo loading plate and bundle cargo hook on the goods carriage, slide backward for goods is unlikely, the endways welding retaining shelf in the cargo loading plate back, the frame that the adjustable V-belt degree of tightness of driving engine is installed just is welded in the right abaft of cargo loading plate and retaining shelf, left and right sides handlebar is welded in the vehicle frame back, on the handlebar of a left side gear controller and flameout switch are installed, on the right handlebar brake handle and throttle control handle are installed, the car pin is welded in below the handlebar of the left and right sides, improvements about weldering one cross bar between the two car pin, its effect is to get on the bus at very narrow path can stop with cross bar when pin can not contact to earth.Be welded with bumper/spoiler below before the vehicle frame, its length with about two car pin spacings quite and be welded on the same terrain clearance plane, when unloading fast, raise handlebar, bumper/spoiler contacts to earth goods to front dump, and a side of handlebar is left and right when tilting bumper/spoiler and car pin is contacted to earth, and dump on a goods left side (right side).

The utility model design speed is fast, slow two retainings, when driving engine during at maximum speed express keep off a car speed be 6 kms/hour about (closing 12 li), slow train keep off a car speed (agro-farming speed) be 4 kms/hour about (closing 8 li), in this two retainings scope, also can add and subtract throttle and carry out stepless change.The design of speed-changing gear box is a mature technology, need only get final product by the speed ratio that above-mentioned speed of a motor vehicle requirement calculates between driving engine and the wheel, repeats no more.Improvements are: speed-changing gear box of the present utility model will satisfy the center of gravity trim requirement of wheelbarrow, for this reason, the installation site of speed-changing gear box is placed under the left fwd cargo loading plate of vehicle frame, driving engine then is placed on the retaining shelf right abaft of cargo loading plate, after this is last, the arrangement on one the first from left right side makes center of gravity as far as possible near wheel, therefore, the final stage power take-off shaft of change speed gear box is located at the posterior angle of case, wheel is installed on the axle, make the terrain clearance maximum of vehicle frame, other gear wheel shaft widens to the wheelbase between the elementary input shaft () as far as possible wittingly, make elementary input shaft () walk around before the wheel radius and stretch to wheel the right and is connected with big V belt wheel, the weight that makes change speed gear box is almost entirely in the left front of wheel, and the V belt wheel is in the right front greatly.Engine installation is on the frame of the adjustable V-belt degree of tightness of cargo loading plate bottom right relief angle, right back of shelf of retaining, and the driving engine first half exposes cargo loading plate and also can not contacted with goods by the protection of retaining shelf; The V belt wheel of driving engine lower part then below cargo loading plate, is connected with the big V belt wheel of change speed gear box with V-belt again, makes the power of driving engine pass to wheel by speed-changing gear box, realizes powered travel.Such design and installation layout has solved the center of gravity trim problem of power transmission and car simultaneously, has reduced height of gravitational center, has improved stability, also reached driving engine maintenance, pull the more convenient effect of starting.

The hull (chassis) of existing wheelbarrow is to be erected on the axletree by fixed bearing, and the output shaft of toric transmission connects axletree again, such design, and tire is quick-fried just will change and must tear parts such as toric transmission, brake gear open, keeps in repair very inconvenient.The utility model improvements are that the final stage output shaft head with the hydraulic clutch speed-changing gear box stretches out that case is outer to become the single-cantilever installation with wheel, dress brake shoes mount pad on the end face of the bearing hole of case, brake shoes and actuation means are installed on the seat, it can not be with wheel, and wheel hub mounting on the middle output shaft head, in brake shoes was included in, wheel hub was rotating, opened shoe plate between the two and friction takes place promptly played braking action.With tire screw wheel is fixed on the wheel hub on the wheel hub outer face, the installation method that resembles motor tire is a single swing arm type, and the dismounting tire is very convenient.Detaching tyre will be pulled outwardly a segment distance could break away from wheel shaft, and change speed gear box is to be contained on the vehicle frame left frame, it and correct frame weld with middle stull, cavity of middle formation, tire just is installed in the cavity, and this cavity just must be widened could extract tire out, change speed gear box input shaft (one) is walked around the big V belt wheel that the preceding radius of wheel stretches to the wheel right side again, therefore, input shaft (one) also will extend, and the intensity of axle is obviously not enough.The way that solves is to adorn a V belt wheel mount pad can not rotate on the V of vehicle frame correct frame belt wheel erecting stage, dress bearing on the seat, adorn big V belt wheel on the outside race, the transmission cover of band keyway is housed on the end face of wheel, change speed gear box input shaft () inserts transmission cover, hang up V-belt, after move driving engine, the tensioning V-belt is behind the engine starting, change speed gear box input shaft (one) only bears torsion, and V-strapped tensile force is then born by V belt wheel mount pad.

Speed-changing gear box must install that power-transfer clutch removes behind the power could handsetting gear, speed-changing gear box of the present utility model will satisfy the operating feature of wheelbarrow, therefore, do not adopt handsetting gear to change the control method of ratio of number of teeth, but wet friction clutch steel disc is installed separately on the driving gear end face with two in the change speed gear box two groups of gear pairs that width between centers is identical, ratio of number of teeth is different, the clutch gear that forms the different ratios of number of teeth of speed two retainings is paid, and is connected with fast, slow train hydraulic clutch respectively.Pay when the express clutch gear and to be in binding site, change speed gear box output express rotating speed, the idle running of slow train gear pair; Pay when the slow train clutch gear and to be in binding site, change speed gear box output slow train rotating speed, the idle running of express gear pair.As long as control hydraulic clutch from close, just can realize fast and slow speed of a motor vehicle conversion.

Controlling of power-transfer clutch also is mature technology, select which kind of power-transfer clutch control mode? the operation requirements that also must meet wheelbarrow.Push away the wheelbarrow two hand-tight handlebars of holding, bipod becomes splayed walking, can not vacate that trick comes pedal or go to be pulled away from hand and close handle.Anatomize two hand-tightly when holding handlebar again, forefinger and thumb can be movable, and the power that thumb and forefinger are held with a firm grip is very big, that is to say that it is very big that forefinger is scratched the pressing force of power and thumb.Therefore, the thrust of clutch-lining of the present utility model does not adopt spring or lever, and adopt the pressure of the hydraulic oil that finger just can control directly to promote hydraulic cylinder piston clutch-plate is pressed on the gear face, the realization gear from close.For this reason, in the hydraulic clutch speed-changing gear box, be provided with fast, slow two groups of hydraulic clutches, be connected with the active clutch gear of fast, slow two groups of gear pairs respectively.Hydraulic efficiency gear also is the mature technology of using always, difference is not establish the dedicated hydraulic fuel tank, but in the hydraulic clutch speed-changing gear box, establish hydraulic efficiency gear, form with Hydraulic Elements such as being connected oil pipe by oil filter, oil pump, pressure adjustment relief valve, manual rotary valve, hydraulic ram, gear controller, hydraulic oil.Improvements are that above-mentioned Hydraulic Elements are all designed on a hydraulic pressure circuit board, press hydraulic schematic diagram boring, connect each element with pore area for oil pipe.Hydraulic pressure circuit board, oil filter and two are fast, the slow train hydraulic ram is contained in the change speed gear box, two fast, slow train gear wheel shafts pass from the oil cylinder piston center respectively, on the oil cylinder piston end face piston return spring is housed, inner chamber be equipped with the special-purpose thrust baring of power-transfer clutch and contact disc respectively with fast, slow train initiatively the friction lining on the clutch gear wait for and contacting; Oil pump, manually rotary valve, pressure regulating screw and fast, slow train oil pipe then are contained in the change speed gear box outside, are convenient to the pressure regulation maintenance and are connected with gear controller.Behind the engine starting, filter enters and is divided into three the tunnel: the one road after the oil pump pressurization and flows to pressure adjustment relief valve hydraulic oil (double as lubricating oil) in the change speed gear box through oil, opening valve when pressure reaches the pressure regulation value makes hydraulic pressure keep certain pressure, surplus oil flows back to fuel tank again, makes hydraulic efficiency pressure system safe and reliable to operation; The second the road flows to the compression indicator indicated pressure; Third Road flows to manual rotary valve, when rotary valve during at midway location hydraulic oil wait for that at this car is in neutral gear position; When manual rotary valve turns to slow gear to put, hydraulic oil enters the slow train oil cylinder and acts on the oil cylinder piston end face, pressure is gradually greater than piston return spring and promote piston and move, piston can not rotate under the guiding of feather key and can only move axially, and friction lining is to rotatablely move, and is connected with contact disc by the special-purpose thrust baring of power-transfer clutch between the two, guarantees the normal operation of power-transfer clutch, realize keeping off slowly combining of gear and hydraulic clutch, car becomes at a slow speed and travels; Neutral gear position in the middle of manual rotary valve is put back to, pressure relief, piston is got back to original position under the effect of pull back spring, and clutch-plate separates with gear, the running of gear neutral; When manual rotary valve turned to fast gear to put, same, hydraulic oil promoted hydraulic clutch and combines with the express driving gear, and car becomes fast running.

Left side handlebar is provided with gear controller, is made up of shifter bar, erection joint, manipulation finger ring, gear controller, double-action plate, commutation rocking arm, pull bar, rod head and hydraulic reversing valve rocking arm etc.One end of shifter bar links to each other with left handlebar with erection joint, and the ear shape slotted hole that the other end passes gear controller is connected with the hydraulic reversing valve rocking arm with rod head with connecting strap, commutation rocking arm, pull bar again.Gear controller is made up of housing, gear locating dowel pin, spring, cover plate and lock screw, one ear shape slotted hole is arranged on the housing, two circular holes are arranged on the vertical direction of slotted hole madial wall, adorn two gear locating dowel pins and spring in the hole, cover the cover plate rear spring and will form three spaces, upper, middle and lower to the side with what the gear locating dowel pin of cup head was pushed ear shape slotted hole to.Gear controller is fixed on the left handlebar with lock screw, shifter bar passes from the space, and before the car unstart, shifter bar is in intermediate gaps, the gear locating dowel pin of two band cup heads is under the effect of spring force, contact with the slotted hole wall, form three contacts, gear lever lock is fixed on the gear steady arm neutral gear position, it is the middle neutral gear position of car, then, adjust pull bar length, make the hydraulic manual rotary valve neutral gear position that also mediates.After the car starting, both hands are mentioned handlebar and are upwards scratched moving speed change manipulation finger ring with left forefinger, gear locating dowel pin and spring that shifter bar is upwards oppressed cup head arrive ear shape slotted hole upper end by shifter bar, the gear locating dowel pin of cup head ejects and again gear lever lock is fixed on the express gear of gear steady arm, simultaneously, by double-action plate, rocking arm, pull bar etc. operating effort is passed to the hydraulic manual rotary valve, hydraulic oil enters the express power-transfer clutch and combines with the express driving gear, realizes fast running.When needing variable block, handle finger ring with the downward pressure and speed of left thumb, shifter bar is pushed the gear locating dowel pin downwards open and is entered neutral, fast car bumper is removed, continue downward pressure and speed bar again, push following cup head gear locating dowel pin open, enter the lower end of ear shape slotted hole, be locked in slow gear and put, car realizes that retaining travels slowly.The ear shape slotted hole of gear steady arm has limited the anglec of rotation of manual rotary valve, the gear locating dowel pin of cup head guaranteed gear accurately and can be in the driving process because of the automatic variable block of shake.

Brake gear of the present utility model adopts part such as the ready-made brake shoes of motor bike, extension spring, eccentric shaft and does not adopt steel rope backguy and brake handle.Improvements are to design the droop brake handle that is fit to the wheelbarrow operation.The droop brake handle is installed in below the right handlebar, is connected with eccentric shaft with pull bar, rocking arm, rod head, brake rocker.Hold the droop brake handle with RIF when braking and upwards scratch movingly, pull bar pulling brake rocker rotates eccentric shaft, opens brake shoes and brake hub friction braking, and RIF is scratched the weight that the size decision of power is braked.The releasing of brake handle, the sagging gravity of armrest handle and the returning place force of shoe plate extension spring reset eccentric shaft and remove brake.

The throttle control handle of engine oil-valve operation device does not adopt motorcyclist wushu rotary handle and the throttle control handle and the steel rope backguy of selecting walking tractor for use.The power control handle is vertically mounted on the brake handle top of right handlebar, links to each other with driving engine with the steel rope backguy; The flameout switch of driving engine is installed in the top of left handlebar shifter bar, is connected with the engine ignition circuit with electric wire.Behind the engine starting, right thumb is pressed throttle control handle downwards, and backguy is opened engine throttle greatly, and rotating speed rises; To returning stingy handle, the steel rope backguy is under the retracing spring pulling with RIF, and engine throttle turns down, and rotating speed descends.When cut-offfing, left thumb is pressed flameout switch, the driving engine parking of will cutting off the power supply.

Driving engine of the present utility model adopts piston type internal combustion engine, also available motor.The electrical motor height of center is low than combustion engine, still is contained on the frame of the adjustable V-belt degree of tightness of driving engine, and electric control box and battery stores case are welded on the back of retaining shelf, can not influence loading.Motor V belt wheel is connected with the big V belt wheel of change speed gear box with V-belt, gives wheel with transmission of power.Contrast the electrical motor of making of aluminium, aluminium electric wire, add that the storage battery and the driving engine of band fuel tank compare, it is too big that its weight can not differ, and also can not influence the center of gravity trim of car.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Description of drawings

Fig. 1 is the left surface view of the utility model drive hand-held type wheelbarrow.

Fig. 2 is the front elevation of the utility model drive hand-held type wheelbarrow.

Fig. 3 is the birds-eye view of the utility model drive hand-held type wheelbarrow.

Fig. 4 is the utility model drive hand-held type wheelbarrow attitude figure that advances.

Fig. 5 is that the utility model drive hand-held type wheelbarrow is parked attitude figure.

Fig. 6 is the utility model drive hand-held type wheelbarrow attitude figure that leans forward.

Fig. 7, Fig. 8 are the utility model drive hand-held type wheelbarrow attitude figure that tilts.

Fig. 9 is the utility model speed-changing gear box structural representation.

Figure 10 is the utility model hydraulic clutch structural representation.

Figure 11 is the utility model hydraulic efficiency gear scheme drawing.

Figure 12 is the utility model hydraulic schematic diagram.

Figure 13 is the utility model gear controller scheme drawing.

Figure 14 is the utility model gear locator structure scheme drawing.

Figure 15 is the utility model braking device scheme drawing.

The specific embodiment

Fig. 1, Fig. 2, novel drive hand-held type wheelbarrow shown in Figure 3, by vehicle frame 1, hydraulic clutch speed-changing gear box 2, big V belt wheel 3, V-belt 4, wheel 5, driving engine 6, driving engine V belt wheel 7, throttle control handle 8, brake handle 9, flameout switch 10, speed change is handled finger ring 11, goods carriage 12, (among the figure: for view is transparent, the cargo loading plate on the goods carriage 12 does not draw) bumper/spoiler 13, manual rotary valve 14, pull bar 15, rod head 16; rocking arm 17; erection joint 18; commutation rocking arm 19; connecting strap 20; shifter bar 21; retaining shelf 22; car pin 23; bundle cargo hook 24 parts such as grade are formed.Left front of wheel 5 below the utility model drive hand-held type wheelbarrow goods carriage 12 hydraulic clutch speed-changing gear box 2 is installed, wheel 5 is installed on the output shaft of the right back inferior horn of change speed gear box (five) 38,28 of input shafts () stretch to right front of wheel and are connected with big V belt wheel 3 from wheel the place ahead, the weight that makes change speed gear box is nearly all left front of wheel 5.Driving engine 6 is contained on the frame of the goods carriage 12 and the adjustable V-belt degree of tightness of bottom right face of retaining shelf 22, the driving engine first half exposes the last plane of goods carriage 12,7 of driving engine V belt wheels below, use V-belt 4 to be connected with the big V belt wheel 3 of the input shaft () 28 of change speed gear box again, the weight that driving engine 6 adds big V wheel 3 is then on the right side of wheel 5.Such mounting arrangement, the center of gravity trim that has solved wheelbarrow, on the other hand, driving engine 6 is not below goods carriage, and goods carriage 12 just can reduce, behind the lade, center of gravity is also low, has reached the starting that pulls of stable and driving engine, keeps in repair also effect very easily.Behind the engine starting, pilot oil door knob 8 passes to hydraulic clutch speed-changing gear box 2 with the power of driving engine by V-belt 3, scratches moving speed change with left forefinger again and handles finger ring 11 hydraulic clutch is engaged, drive wheel 5 and rotate, realize the purpose that motor-driven variable block is travelled.

Fig. 4 to Fig. 8 is the attitude scheme drawing of the utility model drive hand-held type wheelbarrow, sees it is the attitude of advancing of wheelbarrow from Fig. 4.Fig. 5 parks attitude.Handlebar lifts among Fig. 6, and it is the unloading attitude that leans forward that front bumper contacts to earth.The front bumper 13 of Fig. 7, Fig. 8, back car pin 23,5 three of wheels contact to earth be left, right bank unloading attitude.The easiest overturning in the wheelbarrow driving process; from above-mentioned unloading attitude; because bumper/spoiler and the weldering of car pin are at grade; so, no matter vehicle frame of the present utility model from which side overturns the fender guard of contacting to earth is arranged all, even wheel is towards the sky; the retaining shelf contact to earth earlier; driving engine can not sustain damage yet, and unties the rope on the bundle cargo hook 24, which square neck tiltedly can both play the effect of quick unloading intentionally toward.

See that from Fig. 9 the V belt wheel seat 25 of speed-changing gear box 2 is to be fastened on the erecting stage on the vehicle frame right side with screw, on big V belt wheel 3 usefulness bearings 26 covers are present, the transmission cover 27 of the end face tape load key groove of wheel, input shaft () 28 inserts in the keyway, and the power of driving engine 6 passes to big V belt wheel 3 through V-belt 4.V-strapped tensile force is born by V

belt wheel seat

25, and 28 of input shafts () bear torsion, has remedied one and will be pulled outwardly the shortcoming that a segment distance designs elongatedly because of detaching tyre.Speed-changing gear box 2 is paid by five axles and variable gear and is formed fast, slow two groups of gear transmission chains that ratio of number of teeth is different.Wherein, last three 33 and following three 32 is two axles (referring to Fig. 1) up and down, (be the view clarity among this figure, divide left and right sides half section to express diaxon), following three 32 dress slow trains are clutch gear 31 (three left sides are partly cutd open among the figure) initiatively, last three 33 dress expresses are clutch gear 34 (right side is partly cutd open) initiatively, initiatively adorns hydraulic clutch respectively on the clutch gear for two.When combining with the slow train hydraulic clutch, the change speed gear box power chain is paid through the variable gear between input shaft (one) 28 → two 30 → following three 32 → four 37 → output shafts (five) 38 and is passed to wheel 5, realize that retaining travels slowly, initiatively clutch gear 34 idle running of express on last three; When combining with the express hydraulic clutch, the change speed gear box power chain is paid through the variable gear between input shaft (one) 28 → two 30 → last three 33 → four 37 → output shafts (five) 38 and is passed to wheel 5, realize that fast retaining travels, initiatively clutch gear 31 idle running of slow train on following three.Be traveling in when gear change hand lever is placed on neutral gear position or car that driving engine does not have oil flame-out on the die Dorfstrasse, at this moment, friction lining is in released state, and wheelbarrow still can be chosen and be tried hard to recommend moving advancing, and only wheel 5 will drive the gear idle running of 4,5 diaxons.A hydraulic oil pump driving gearshaft has been set up in the front lower place in the change speed gear box, and (Fig. 9 lower left corner), the interior outside of axle is installed hydraulic pressure circuit board 56 and oil pump 55 respectively.The spindle nose of output shaft of gear-box (five) 38 stretches out outside the case, adorns wheel hub on the spindle nose, and wheel 5 is fastened on the wheel hub by four much lug nuts, and such single swing arm type is installed, and makes remove a tyre more convenient.

Be provided with fast, slow two groups of hydraulic clutches in the hydraulic clutch speed-changing gear box 2 of the present utility model, be connected with the active clutch gear of fast, slow two groups of gear change messenger chains respectively.Because planform is identical, only embodiment is described with the express hydraulic clutch, as can be seen from Figure 10 the express hydraulic clutch by the special-purpose thrust baring 43 of express oil pipe 40, express hydraulic ram 41, oil cylinder piston 42, power-transfer clutch, contact disc 44, feather key 45, piston return spring 46, initiatively clutch-plate 47, driven clutch-plate 48, lock pin 49, express initiatively clutch gear 34, axially three 33, express driven gear 36 form on load dish 50, female splines lining 51, sliding shaft sleeve 52, (with two) transmission gear 53, the express.Last three 33 is castellated shaft, on the axle circular groove is arranged, there is the axial load dish 50 of female splines to be contained in the circular groove of castellated shaft, change key and key contacts that an angle makes inside and outside spline again, use lock pin 49 that axial load dish 50 and active clutch-plate 47 is locked again, axially load dish 50 can not move axially on axle and can only rotate with axle, works to bear axial force.Initiatively the splined hole at clutch-plate 47 centers is through on three 33 and rotates with axle, and driven clutch-plate 48 centers are circular hole, and periphery has four protruding keys of five equilibrium just to be contained in express initiatively to rotate with gear in the keyway of clutch gear 34.Hydraulic oil enters hydraulic ram 41 from express oil pipe 40 and acts on oil cylinder piston 42 end faces, pressure increases gradually, compression piston pull back spring 46 also moves axially under the guiding of feather key 45, when contact disc 44 contacts with active clutch-plate 47, the special-purpose thrust baring 43 of power-transfer clutch rotates and continues to move axially active clutch-plate 47, driven clutch-plate 48 are pressed on the axial load dish 50, power-transfer clutch is in bonding state, and express initiatively clutch gear 34 drives 36 rotations of express driven gear with last three 33.Otherwise when removing hydraulic pressure, piston return spring 46 promotes oil cylinder pistons 42 and resets, clutch-plate pressure relief and separate, and express active clutch gear 34 separates and can only dally on sliding shaft sleeve 52 with last three 33.The slow train hydraulic clutch is contained on following three 32, and initiatively the number of teeth and the express active clutch gear 34 of clutch gear 31 is different from slow train hydraulic ram 60 is connected slow train oil pipe 57 except that slow train, and other structure is identical with principle of work just to be repeated no more.

Be provided with hydraulic efficiency gear in the hydraulic clutch speed-changing gear box 2 of the present utility model, the pressure oil that produces with hydraulic efficiency gear promotes power-transfer clutch, the realization variable block is travelled, its embodiment is: the hydraulic principle Figure 12 in the Figure 11 and the lower left corner, be hydraulic efficiency gear figure of the present utility model, according to figure design, by oil filter 54, oil pump 55, hydraulic pressure circuit board 56, manually fast, the slow

train oil pipe

40,57 of rotary valve 14, pressure adjustment relief valve 58, compression indicator 59, slow train hydraulic ram 60, express hydraulic ram 41 and two is formed.Can find out among Figure 11 on the hydraulic pressure circuit board 56 that according to figure boring, replace oil pipe to be connected with each Hydraulic Elements with the hole, hydraulic pressure circuit board 56, oil filter 54, slow train hydraulic ram 60, express hydraulic ram 41 are contained in the inside of change speed gear box 2, oil plant can not leak outside; The pressure regulating screw of pressure adjustment relief valve 58, manual rotary valve 14, oil pump 55, slow

train oil pipe

57 and 40 in express oil pipe are contained in the casing outside, are convenient to handle and the pressure regulation maintenance.The axle head key of oil pump 55 inserts in the cog wheel of the oil pump axle head groove (seeing Fig. 9 lower left corner), rotates with gear wheel shaft.The hydraulic principle is: hydraulic oil sucks oil pump 55 pumps into hydraulic pressure circuit board 56 after pressurization duct from oil filter 54, and one the road to manual rotary valve 14 waits; One the road to the compression indicator indicated pressure; Another road is to pressure adjustment relief valve.Make compression indicator 59 be indicated to specified value with pressure regulating screw regulating spring pressure, locked screw, hydraulic oil keeps indicated pressure, and surplus oil backs down pressure adjustment relief valve 58 and returns change speed gear box 2 from the H orifice flow.(after adjusting pressure, remove compression indicator, do not adorn compression indicator on the car).Manually rotary valve 14 is connected with rotary valve rocking arm 66, controlled by it, and when manual rotary valve 14 forwards the slow train position to, hydraulic oil is connected through slow train oil pipe 57 and slow train oil cylinder 60, the transmission of realization slow train, and the oilhole C of express oil cylinder does not then have pressure to be in neutral with the change speed gear box connection.Otherwise when manual rotary valve 14 forwards the express position to, hydraulic oil is connected through express oil pipe 40 and express oil cylinder 41, realizes the express transmission.

The gear controller of installing on the handlebar 61 of Figure 13 left side by speed change handle finger ring 11, gear steady arm housing 62, shifter bar 21, commutation rocking arm 19, connecting strap 20, pull bar 15, rocking arm 17, rod head 16, erection joint 18, rotary valve rocking arm 66 is formed and be connected with the manual rotary valve 14 of hydraulic efficiency gear.A-A gear steady arm is analysed and observe gear locating dowel pin 63, spring 64, the cover plates 65 that two band cup heads are housed in the housing 62 of Figure 14, two gear locating dowel pins 63 are pushed to intermediate gaps of opposite formation of ear shape slotted hole under the effect of spring force, shifter bar 21 passes from the space by 3 lockings of two halves bulb and the formation of slotted hole wall, adjust pull bar 15 length again, the spool of manual rotary valve 14 is mediated (referring to Figure 11, Figure 12), neutral gear position in the middle of Here it is.Upwards scratch moving speed change with left index finger and handle finger ring 11, shifter bar 21 moves up, transmission double-action plate 20 is pushed off and is pulled back pull bar 15, rocking arm 17, rotary valve rocking arm 66 to shifter bar 21 to rocking arm 19 and enter ear shape slotted hole K place, be locked in the express gear by gear locating dowel pin 63 and put, realize that fast retaining travels; When the conversion slow train kept off, left thumb is handled finger ring 11 by speed change downwards made shifter bar 21 each part of drive oppositely move to ear shape slotted hole M place, is locked in the slow train gear by gear locating dowel pin 63 and puts, and realizes that retaining travels slowly.No matter the variable block operation is fast and slow, shifter bar 21 all will pass through middle neutral gear position, and transient solution removes hydraulic clutch makes variable block steadily reliable.On the left handlebar 61 of this Figure 13 engine off switch 10 is housed also, is connected, just can cut off the power supply flame-out by knob downwards with left thumb with ignition circuit.

Figure 15 is equipped with braking device on the right handlebar 73 of vehicle frame 1, the Transmission of being made up of brake handle 9, pull bar 15, rod head 16, rocking arm 17, erection joint 18, brake rocker 67 is connected with eccentric shaft 69, eccentric shaft 69 is controlled brake shoes 68 and is opened, and extension spring 70 makes the shoe plate return.Upwards scratch moving brake handle 9 with RIF, each part of transmission moves backward, eccentric shaft 69 is opened brake shoes 68 with brake hub 71 the friction brake effect takes place, RIF is scratched the light and heavy degree of the size decision brake of power, unclamp RIF, the convergent force of the gravity of brake handle 9 and extension spring 70 resets eccentric shaft 69, shoe plate 68, removes brake.On the right handlebar 73 of this Figure 15 engine oil door knob 8 is housed also, acceleration cable 72 links to each other with the engine oil door switch, pressing throttle control handle 8 engine speeds downwards with right thumb accelerates, slow down to returning stingy throttle control handle 8 engine speeds with RIF, when gear immobilized, the plus-minus throttle can realize that also stepless change travels.

Claims

1. novel drive hand-held type wheelbarrow, form by vehicle frame, driving engine and accelerator operating device, hydraulic efficiency gear, hydraulic clutch speed-changing gear box and gear controller, wheel and brake gear, it is characterized in that: the goods carriage lower-left face of vehicle frame is installed the hydraulic clutch speed-changing gear box, power input shaft above the wheel-mounted on the power take-off shaft that stretches out below behind the right side of case, case preceding stretches to right front of vehicle frame and is connected with V belt wheel greatly from the front of wheel; Driving engine is contained on the frame of right back adjustable V-belt degree of tightness of goods carriage, and the driving engine first half exposes plane on the goods carriage, and the V belt wheel of lower part then below goods carriage, is connected with the big V belt wheel of change speed gear box with V-belt.

2. novel drive hand-held type wheelbarrow according to claim 1 is characterized in that: the final stage takeoff output spindle nose of hydraulic clutch speed-changing gear box stretches out outside the case and becomes single swing arm type to install with wheel.

3. novel drive hand-held type wheelbarrow according to claim 1 is characterized in that: about weldering one cross bar between the two car pin, be welded with bumper/spoiler below before the vehicle frame, its length with about two car pin spacings quite and be welded on the plane of same terrain clearance.

4. novel drive hand-held type wheelbarrow according to claim 1, it is characterized in that: two width between centerss in the hydraulic clutch speed-changing gear box are identical, on the driving gear end face of two groups of gear pairs that ratio of number of teeth is different the wet friction steel disc is installed separately, form the different clutch gear of fast, slow two retaining ratios of number of teeth and pay, be connected with fast, slow train hydraulic clutch respectively.

5. novel drive hand-held type wheelbarrow according to claim 1 is characterized in that: be provided with fast, slow two groups of hydraulic clutches in the hydraulic clutch speed-changing gear box, be connected with the active clutch gear of fast, slow two groups of gear pairs respectively.

6. novel drive hand-held type wheelbarrow according to claim 1, it is characterized in that: be provided with hydraulic efficiency gear in the hydraulic clutch speed-changing gear box, the hydraulic pressure circuit board of device, oil filter and two are fast, the slow train hydraulic ram is contained in the change speed gear box, and oil pump, manually rotary valve, pressure regulating screw and fast, slow train oil pipe then are contained in outside the change speed gear box.

7. novel drive hand-held type wheelbarrow according to claim 1, it is characterized in that: left handlebar is provided with gear controller, one end of shifter bar links to each other with left handlebar with erection joint, and the ear shape slotted hole that the other end passes the gear steady arm is connected with manual rotary valve rocking arm with connecting strap, commutation rocking arm, pull bar, rod head.

8. novel drive hand-held type wheelbarrow according to claim 1, it is characterized in that: car is provided with braking device, and the droop brake handle is contained in below the right handlebar, is connected with eccentric shaft with pull bar, rod head, brake rocker.

9. novel drive hand-held type wheelbarrow according to claim 1, it is characterized in that: the engine oil-valve operation handle is vertically mounted on right handlebar inside front, is connected with the engine oil door switch with the steel rope backguy; The engine off switch is contained in the top of left handlebar shifter bar, is connected with the engine ignition circuit with electric wire.