CN206437829U - Use light logistic car - Google Patents

Abstract

Light logistic car, including vehicle body, steering mechanism and transmission mechanism are used, steering mechanism is arranged on the front portion of vehicle body, the logistic car also includes the elevating mechanism for being arranged on body tail；This light logistic car practical application is stronger, transport, storage, handling, carrying, dispatching can be not only realized, different series can also be produced, be applied to different occasions, make logistics transportation more laborsaving, convenient, safe, to reduce the labor intensity of express delivery worker.

Description

Use light logistic car

Technical field

The utility model belong to delivery power-assisted machinery, be it is a kind of be used for realize transport, storage, handling, carry, dispatching it is many Use light logistic car.

Background technology

With the development of commodity production, logistics is also in development.Logistics delivery has turned into China's interzone commodity exchange the most Busy, a mostly important ring.Meanwhile, with Electronic Commerce in China flourish and it is increasingly mature, net purchase gradually into The important shopping way of consumer, even main shopping way, the express delivery industry closely coupled with net purchase is also flown Speed development.Society of today comes into high speed epoch, any market and industry it is desirable that efficient operation, what it was present Problem has：

（1）Staff has but welcome high operating pressure.

（2）Current logistics trolley, volume is bigger than normal, expensive, or application flexibility ratio is not high, not convenient enough.

(3) there is the problem of transport thing is easily damaged when jolting in current logistic car.

The content of the invention

Utility model purpose：The utility model provides a kind of multi-purpose light logistic car, in the past existing the purpose is to solve The problem of.

Technical scheme：Utility model is achieved through the following technical solutions：

Light logistic car, including vehicle body, steering mechanism and transmission mechanism are used, steering mechanism is arranged on before vehicle body Portion, it is characterised in that：The logistic car also includes the elevating mechanism for being arranged on body tail；Described steering mechanism includes rotating hand , expansion link and steering wheels, hand is rotated being arranged on above expansion link, steering wheels are arranged on expansion link bottom；It is described to pass Motivation structure includes chain-drive mechanism, bevel gear transmission and arrangement of clutch, and chain-drive mechanism is arranged in body forward structure, bores tooth Wheel drive mechanism is arranged in body bottom, chain-drive mechanism connection bevel gear transmission, bevel gear transmission connection vehicle body Driving wheel, arrangement of clutch is erected at by chain-drive mechanism device and does mutual clutch action with chain-drive mechanism.

Hand is rotated the T-shaped structure to be made up of cross bar and vertical rod, cross bar is provided at both ends with manipulator's handle, vertical rod The motion bar structure that is erected on expansion link and can be stretched up and down with expansion link formation by snak link；With two manipulators right The position answered is respectively arranged with hand-operated brake lock and clutch controller, and place is provided with Electric control and opened by a manipulator wherein Close, hand-operated brake lock connection vehicle body brakes, clutch controller connection arrangement of clutch, power switch control connection driver Structure.

Side manipulator is being above additionally provided with speed control wherein.

The bottom of expansion link is provided with latching structure, and latching structure includes card and neck, the front with certain toughness The card of bending is fixed by screws on expansion link, and card is put in neck, and neck is fixedly arranged on the wheel carrier of deflecting roller.Work as card When piece disengages neck, expansion link is in swing free state, can facilitate to the manual drag operation of logistic car；Card is caught in Neck, expansion link is uprightly fixed, and can carry out operating logistic car electric drive.

Chain-drive mechanism includes big sprocket wheel, minor sprocket, the first driven sprocket and the second driven sprocket, big sprocket wheel and minor sprocket Between with the first chain connect, between the first driven sprocket and the second driven sprocket with the second chain connection, minor sprocket and first Driven sprocket is with an axle, and big sprocket wheel is installed on dc generator by shaft coupling.

Second driven sprocket is with first bevel gear with input shaft, and first bevel gear is engaged with second bevel gear, and second Bevel gear is divided into jackshaft two ends with third hand tap gear, and third hand tap gear is nibbled with the 4th bevel gear being arranged on output shaft Close.

The arrangement of clutch includes being fixed with key on the sliding block being connected with clutch controller, axle, between minor sprocket and axle belong to Gap coordinates, and by clutch controller so that sliding block is slided when using, drive minor sprocket is moved along axle so that on key and minor sprocket Keyway is separated, and minor sprocket runs out of steam source, it is impossible to carry out Chain conveyer.

Body bottom includes 1 deflecting roller, 2 traveling wheels, 2 universal wheels, before 1 steering wheels is located at dolly most Portion, 2 traveling wheel symmetrical placements are at the output shaft two ends of vehicle body back side, and two universal wheel symmetrical placements are in vehicle body front side, ten thousand The wheel just landed to wheel to be under pressure.

Elevating mechanism is that mechanical elevating mechanism or electric elevating mechanism or both have concurrently；The mechanical elevating mechanism includes Pedal, hydraulic jack and double rocker mechanism are stepped on, pedal connection hydraulic jack, hydraulic jack connection double rocking lever machine is stepped on Structure；Mechanical elevating mechanism drives continuous swing of guide rod hydraulic jack is worked by stepping on pedal, the top elongation of jack, So that double rocker mechanism is changed to raised configuration；The electric elevating mechanism, using wire, by two fixed pulleys, with cunning Node on block is connected, sprocket wheel rotation, pulls the sliding block on guide rod, constantly hydraulic jack is acted on, elevating mechanism is increased Or decline.

The two ends of output shaft are provided with opening up lower telescopic hole through the part of traveling wheel, are set in the telescopic hole Lower damping spring is equipped with, stull is provided with the bottom of body tail, the bottom of stull is provided with lower end and put in telescopic hole Lower fulcrum bar, the lower damping spring of bottom connection of lower fulcrum bar, the bottom of lower fulcrum bar is downward diminishing truncated cone-shaped, in telescopic hole Madial wall sets the arc spring lamination inwardly arched upward；

Telescopic hole on downward opening is provided with stull, damping spring is provided with upper telescopic hole, is stretched upper Shrinkage cavity inwall is provided with the upper arc spring lamination inwardly arched upward, and expansion link upper end is put in telescopic hole, and expansion link is defeated with being arranged on Fix bar on shaft is flexibly connected, and expansion link is that the structure moved up and down, one in the bottom of expansion link can be done along fix bar Side is rack structure, and the rack structure is engaged with the travelling gear being arranged on output shaft, and travelling gear is also with being arranged on lower branch The rack engagement of bar side, when lower fulcrum bar is moved down, the rack of lower fulcrum bar engages expansion link by travelling gear and risen.

Advantageous effect：The utility model belongs to the multi-purpose light logistic car of delivery power-assisted, including vehicle body frame, wheel, and Control is electric.Vehicle body frame includes elevating mechanism, mechanical transmission structure, arrangement of clutch, steering mechanism, folding ladder, the lift Structure is that fuselage can change vehicle body double rocking lever elevating mechanism state, mechanical transmission mechanism allows with movable part using hydraulic jack Use no matter light logistic car pulls and promote, or by driven by power, power can be transmitted to wheel, to realize goods Transfer.Other body bottom is equipped with universal wheel, and vehicle body operation is more steady when heavily loaded, and arrangement of clutch is located in body forward structure In machine driven system, effect is laborsaving and brake, and steering mechanism is located at vehicle body forefront and realizes steering, equipped with locking mechanism, The locking mechanism is exactly to realize push-and-pull and drive manner selection.Using light logistic car also has control electric, the control electricity Gas is electrical brake, motor driving.

It is beneficial to alleviate the special shock mitigation system jolted in addition, the logistic car is equipped with, when reducing transport breakables, jolts The infringement that road surface is caused to article.

This light logistic car practical application is stronger, can not only realize transport, storage, handling, carrying, dispatching, also Different series can be produced, are applied to different occasions, make logistics transportation more laborsaving, convenient, safe, to reduce express delivery The labor intensity of worker.

Brief description of the drawings：

Fig. 1 is that the utility model uses logistics light roadster side view.

Fig. 2 is steering mechanism's schematic diagram.

Fig. 3 is lifting structure schematic diagram.

Fig. 4 is drive mechanism schematic diagram.

Fig. 5 arrangement of clutch structural representations.

Fig. 6 is damping device schematic diagram；

Fig. 7 is the schematic diagram that card coordinates with neck.

Embodiment：

As shown in figure 1, utility model provides a kind of multi-purpose light logistic car, including vehicle body 59, steering mechanism 1 and transmission Mechanism 3, steering mechanism 1 is arranged on the front portion of vehicle body, can be to direct of travel control, and the logistic car also includes being arranged on after vehicle body The elevating mechanism 2 in portion；Described steering mechanism 1 includes rotating hand 12, expansion link 6 and steering wheels 5, rotates hand and is set 12 Put in the top of expansion link 6, steering wheels 5 are arranged on the bottom of expansion link 6；The transmission mechanism 3 includes chain-drive mechanism 9, cone Gear drive 10 and arrangement of clutch 11, chain-drive mechanism 9 are arranged in body forward structure, and bevel gear transmission 10 is arranged in car Body bottom, the connection bevel gear transmission 10 of chain-drive mechanism 9, bevel gear transmission 10 connects the driving wheel of vehicle body, clutch Device 11 is erected at by the device of chain-drive mechanism 9 and does mutual clutch action with chain-drive mechanism 9.

Body tail is additionally provided with and folding ladder 50.Folding ladder 50 can realize ascend a height loading or unloading goods.

Hand is rotated 12 is the T-shaped structure that is made up of cross bar and vertical rod, and cross bar is provided at both ends with manipulator 4, The motion bar structure that vertical rod is erected on expansion link 6 by snak link 8 and can stretched up and down with the formation of expansion link 6 is convenient different People operates；4 corresponding positions are respectively arranged with hand-operated brake lock 14 and clutch controller 15 with two manipulators, wherein one Individual manipulator is power switch control 13 is provided with 4, and the connection vehicle body brakes of hand-operated brake lock 14, clutch controller 15 connects Connect arrangement of clutch 11, the connection transmission mechanism 3 of power switch control 13.Side manipulator is being additionally provided with speed control wherein on 4 Device 17 processed.By rotating operation hand 4 toggle speed controllers 17.Speed can be controlled.

Mechanical brake mechanism and electrical brake mechanism are respectively positioned on manipulator on 4 right side handle, i.e. hand-operated brake lock 14, Mechanical brake can be realized, electrical brake mechanism is located at manipulator and realized electrically that on 4 left side handle, can make to cut off the electricity supply Brake.

Specially pinching brake 14 and arrangement of clutch 15, can both be braked by mechanically and electrically common realize, electrical brake Cut off the electricity supply, clutch separation makes dolly transmission mechanism 3 run out of steam source, and transmission is interrupted, and dolly slows down.Pinching brake, it is flexible Iron plate holds the rubber tire on input shaft 39 tightly, and by rubbing, quick deceleration brakes.

Clutch control device 15 is located on the left side handle of manipulator's handle, and it can be such that the key on axle is separated with sprocket wheel, make Can not normally it be driven, it is convenient dilatory, power source can be also cut off, the function of slowing-down brake is realized.Expansion link 6 can facilitate different people Member's operation, manipulator is erected on expansion link 6 using 4 as motion bar by snak link 8.Latching structure is fixed on fixed expansion link Bottom, drive manner and push-pull fashion can be selected by latching structure

The bottom of expansion link 6 is provided with latching structure 7, and latching structure 7 includes card 18 and neck 19, with certain tough Property front bending card be fixed by screws on expansion link 6, card 18 is put in neck 19, and neck is fixedly arranged at deflecting roller Wheel carrier 20 on.When card 18 disengages neck 19, expansion link is in swing free state, can facilitate manual to logistic car Drag operation；Card 18 is caught in neck 19, expansion link is uprightly fixed, can carry out operating logistic car electric drive.Specifically Realize that structure can be following structure:The upper end of card 18 passes through the bottom of 73 connection expansion link of rotating shaft 6, the connection of the lower end of card 18 One can with and the gag lever post 70 that can only be moved up and down in neck 19, the lower end both sides of gag lever post 70 respectively set one to stretch out Horizontal card 71, the medium position in neck 19 is provided with the limiting card 72 extended internally, horizontal after card 18 stretches out neck 19 Card 71 is stuck in spacing at limiting card 72, and neck 19 is also exposed in now rotating shaft 73, and expansion link is in swing free state, works as limit When position bar 70 is moved to 19 bottom of neck, the rotating shaft of the upper end of card 18 puts in clamping in neck 19, and expansion link is uprightly fixed. Certainly it can also be set using other modes.

Chain-drive mechanism 9 includes big sprocket wheel 29, minor sprocket 30, the first driven sprocket 32 and the second driven sprocket 33, big chain Connected between wheel 29 and minor sprocket 30 with the first chain 31, the second chain is used between the first driven sprocket 32 and the second driven sprocket 33 Bar 34 is connected, the driven sprocket 32 of minor sprocket 30 and first with an axle 35, big sprocket wheel 29 is installed on direct current by shaft coupling 36 On generator 37.Dc generator 37 connects two 12v power supplys, and dc generator 37 and two 12v power supplys are placed in Chinese herbaceous peony portion.

Second driven sprocket 33 and first bevel gear 38 are with input shaft 39, first bevel gear 38 and second bevel gear 40 engagements, second bevel gear 40 is divided into the two ends of jackshaft 41 with third hand tap gear 42, and third hand tap gear 42 is with being arranged on output The 4th bevel gear 43 on axle 44 engages.

The arrangement of clutch 11 includes being fixed with key 45, minor sprocket on the sliding block 46 being connected with clutch controller 15, axle 35 30 belong to gap cooperation with axle 35, by clutch controller 15 so that sliding block 46 is slided when using, and drive minor sprocket 30 along axle 35 Mobile so that key 45 is separated with the keyway on minor sprocket 30, minor sprocket 30 runs out of steam source, it is impossible to carry out Chain conveyer.By from Close control device 15 to operate, clutch separation.

Body bottom is located at dolly comprising 1 47,2, traveling wheel universal wheel of deflecting roller 5,2,48,1 steering wheels 5 Forefront, 2 symmetrical placements of traveling wheel 47 are at the two ends of output shaft 44 of vehicle body back side, the symmetrical placement of two universal wheels 48 In vehicle body front side, universal wheel 48 is the wheel just landed that is under pressure.That is when unloaded, two universal wheels are not in contact with the ground, Logistic car is supported by the rear portion traveling wheel 47 of steering wheels 5 and two, i.e., five wheels land, and is more convenient flexible.During loading thing, universal wheel Ground is contacted, vehicle body operation is more stablized.When goods is laid down, universal wheel 48 rises liftoff under the action of the spring, becomes again Deflecting roller 5 and traveling wheel 47 contact ground, i.e. three-wheel land.

Elevating mechanism 2 is that mechanical elevating mechanism or electric elevating mechanism or both have concurrently；Mechanical elevating mechanism bag Include and step on pedal 21, hydraulic jack 22 and double rocker mechanism 24, step on the connection hydraulic jack 22 of pedal 21, hydraulic jack 22 connection double rocker mechanisms 24；Mechanical elevating mechanism drives continuous swing of guide rod to make the work of hydraulic jack 22 by stepping on pedal 21 Make, the top 23 of jack extends so that double rocker mechanism 24 is changed to raised configuration；The electric elevating mechanism, utilizes steel Silk thread 25, by two fixed pulleys 26 and 27, is connected, sprocket wheel 29 rotates, constantly to hydraulic jack with the node on sliding block 28 22 effects, rise or fall elevating mechanism.Electrical control is set up onto the connecting rod of mechanical elevating mechanism.

Specific operating process is：Mechanical elevating mechanism is swung by stepping on pedal 21, drives the first guide rod the 51, the 3rd to lead Bar 53 is continuously swung so that the translation of the second guide rod 52 or so, the 3rd guide rod 53 makes hydraulic jack 22 work, the top of jack 23 elongations so that double rocker mechanism 24 changes, and the 6th guide rod 56 is swung so that the 8th guide rod 58 is also rocked to upright state, Horizontal guide 57 is in extreme higher position；The electric elevating mechanism, one end of wire 25 is connected with big sprocket wheel 29, and the other end passes through Two fixed pulleys 26 and 27, are connected with the node on sliding block 28, as sprocket wheel 29 rotates, and make steel wire node and fixed pulley on sprocket wheel Distance constantly changes between 26, pulls sliding block 28, sliding block 28 is moved reciprocatingly, constantly hydraulic jack 22 is acted on, is equal to Machinery steps on pedal, rises or falls elevating mechanism.

The two ends of output shaft 44 are provided with opening up lower telescopic hole through the part of traveling wheel 47, in the telescopic hole Lower damping spring 60 is inside provided with, stull 61 is provided with the bottom at the rear portion of vehicle body 59, the bottom of stull 61 is provided with lower end and stretched The lower fulcrum bar 62 entered in telescopic hole, the lower damping spring 60 of bottom connection of lower fulcrum bar 62, the bottom of lower fulcrum bar 62 is downwards gradually The truncated cone-shaped of diminution, the arc spring lamination 64 inwardly arched upward is set in telescopic hole madial wall；

Telescopic hole on downward opening is provided with stull 61, damping spring 65 is provided with upper telescopic hole, Upper telescopic hole inwall is provided with the upper arc spring lamination 66 inwardly arched upward, and the upper end of expansion link 67 is put in telescopic hole, expansion link 67 It is flexibly connected with the fix bar 68 being arranged on output shaft 44, expansion link 67 is that the structure moved up and down can be done along fix bar 68, It is rack structure in the side of the bottom of expansion link 67, the rack structure is nibbled with the travelling gear 69 being arranged on output shaft 44 Close, travelling gear 69 is also engaged with being arranged on the rack of the side of lower fulcrum bar 62, when lower fulcrum bar 62 is moved down, lower fulcrum bar 62 Rack engages expansion link 67 by travelling gear 69 and risen.Said structure constitutes the shock mitigation system of dolly.

Because logistics trolley also can often transport the breakables such as some porcelain, glass, be so accomplished by one it is relatively good The shock mitigation system of some, as shown in fig. 6, when loading is passed through and jolts road surface, lower fulcrum bar 62 sinks the lower damping spring 60 of compression in fact Existing one-level damping, and during lower fulcrum bar 62 sinks, the rack engaged transmission gear 69 on lower fulcrum bar 62 is square along along such as figure To rotate counterclockwise, and then the engagement expansion link 67 of travelling gear 69 rises, and then compresses upper damping spring 65 and complete two grades and subtract Shake, and arc spring lamination 64 is extruded when lower fulcrum bar 62 sinks down into the position that arc spring lamination 64 arches upward, three-level damping is completed, and stretch Bar 67 rise to arc spring lamination 6 arch upward position when the upper arc spring lamination 6 of extruding complete level Four damping.

The shock mitigation system lower fulcrum bar 62 sinks, and expansion link 67 rises, and does offset type active buffer in opposite direction, increases Plus damping effect.Tense the pulling spring of expansion link 67 downwards further to increase furthermore it is possible to set in the bottom of expansion link 67 Plus-minus shake effect, completes Pyatyi damping.

Elevating mechanism as described in Figure 3, including by the first guide rod 51, the second guide rod 52, the double of the 3rd guide rod 53 composition shake Linkage, single continuous pushes pedals 21 of pin, the first guide rod 51 is continuously swung, and thus the second guide rod 52 is continuously swung, to jack 22 are acted on so that hydraulic oil for lifting jacks is filled with pressure-resistant leather bag, and utricule promotes leather bag support ring, piston movement, jack bar Elongation.Pushes pedals 21 can be to put down to stepping on so that the horizontal hunting of pedal 21；Specially：When single pin step on pedal 21 it is flat to During swing, the first guide rod 51 swings and swings the 3rd guide rod 53 by the second guide rod 52, presses jack operation handle and causes Hydraulic oil for lifting jacks is filled with pressure-resistant leather bag, and utricule promotes leather bag support ring, piston movement, jack bar elongation.Pin is unclamped, in bullet The lower homing of pedal 21 of spring effect, drives the first guide rod 51, the second guide rod 52, and the homing of the 3rd guide rod 53, which is realized, once to be added Power is circulated.Continuous pushes pedals 21, the first guide rod 51 is continuously swung, and thus the second guide rod 52 is back and forth continuous swings, and makes jack Bar continuous elongation,

Connected between top 23 and crane 54 with ball pair 55, the free degree is increased with this, prevents from sending out when crane from declining Raw stuck situation.Hydraulic jack considers self-locking, with the addition of hydraulic valve so that dolly work is safer.Also include guide rod 56, guide rod 57, the double rocker mechanism 24 that guide rod 58 is also constituted, guide rod 56, guide rod 58 swings between 0 ° -90 °, works as elevating mechanism During in extreme lower position, guide rod 56, guide rod 58 is in horizontality, and swing angle is 0 °.When elevating mechanism is in extreme higher position When, guide rod 56, guide rod 58 is in vertical state, and swing angle is 90 °.Slide block mechanism is welded on connecting rod 52, and sliding block 28 is blocked, Connecting rod stress is made by control, it is front and rear to move in parallel.

In summary, light logistic car is used, it is that staff provides necessarily in the short distance transportation of logistics Help and facility, it is to avoid staff's high intensity work.According to actual needs, transport, storage, handling, carrying, dispatching are realized Etc. basic function.With versatile, lightly, the characteristics of convenient.

Claims (10)

1. light logistic car is used, including vehicle body（59）, steering mechanism（1）And transmission mechanism（3）, steering mechanism（1）Set In the front portion of vehicle body, it is characterised in that：The logistic car also includes the elevating mechanism for being arranged on body tail（2）；Described steering Mechanism（1）Including rotating hand handle（12）, expansion link（6）And steering wheels（5）, rotate hand handle（12）It is arranged on expansion link（6）On Side, steering wheels（5）It is arranged on expansion link（6）Bottom；The transmission mechanism（3）Include chain-drive mechanism（9）, bevel gear pass Motivation structure（10）And arrangement of clutch（11）, chain-drive mechanism（9）It is arranged in body forward structure, bevel gear transmission（10）It is arranged in Body bottom, chain-drive mechanism（9）Connect bevel gear transmission（10）, bevel gear transmission（10）Connect the drive of vehicle body Driving wheel, arrangement of clutch（11）It is erected at chain-drive mechanism（9）Device side and and chain-drive mechanism（9）Do mutual clutch action.

2. according to claim 1 use light logistic car, it is characterised in that：Rotate hand handle（12）For by cross bar and vertical rod The T-shaped structure constituted, cross bar is provided at both ends with manipulator's handle（4）, vertical rod passes through snak link（8）It is erected at expansion link （6）Upper and and expansion link（6）Form the motion bar structure that can be stretched up and down；With two manipulator's handles（4）Corresponding position difference It is provided with hand-operated brake lock（14）And clutch controller（15）, manipulator's handle wherein（4）Place is provided with Electric control and opened Close（13）, hand-operated brake lock（14）Connect vehicle body brakes, clutch controller（15）Connect arrangement of clutch（11）, Electric control Switch（13）Connect transmission mechanism（3）.

3. according to claim 2 use light logistic car, it is characterised in that：Side manipulator handle wherein（4）It is upper to go back It is provided with speed control（17）.

4. according to claim 2 use light logistic car, it is characterised in that：Expansion link（6）Bottom be provided with clamping lock Structure（7）, latching structure（7）Including card（18）And neck（19）, with certain toughness front bending card pass through spiral shell Nail is fixed on expansion link（6）On, card（18）Put in neck（19）Interior, neck is fixedly arranged at the wheel carrier of deflecting roller（20）On；Work as card Piece（18）Disengage neck（19）When, expansion link is in swing free state, can facilitate to the manual drag operation of logistic car；Will Card（18）It is caught in neck（19）, expansion link uprightly fixed, and can carry out operating logistic car electric drive.

5. according to claim 2 use light logistic car, it is characterised in that：Chain-drive mechanism（9）Including big sprocket wheel （29）, minor sprocket（30）, the first driven sprocket（32）And second driven sprocket（33）, big sprocket wheel（29）With minor sprocket（30）Between Use the first chain（31）Connection, the first driven sprocket（32）With the second driven sprocket（33）Between use the second chain（34）Connection, Minor sprocket（30）With the first driven sprocket（32）With in an axle（35）On, big sprocket wheel（29）Pass through shaft coupling（36）It is installed on direct current Generator（37）On.

6. according to claim 5 use light logistic car, it is characterised in that：Second driven sprocket（33）With the first cone tooth Wheel（38）With in input shaft（39）On, first bevel gear（38）With second bevel gear（40）Engagement, second bevel gear（40）With Third hand tap gear（42）It is divided into jackshaft（41）Two ends, third hand tap gear（42）With being arranged on output shaft（44）On the 4th cone tooth Wheel（43）Engagement.

7. according to claim 5 use light logistic car, it is characterised in that：The arrangement of clutch（11）Including with clutch Controller（15）The sliding block of connection（46）, axle（35）On be fixed with key（45）, minor sprocket（30）With axle（35）Belong to gap cooperation, Pass through clutch controller when using（15）So that sliding block（46）Slide, drive minor sprocket（30）Along axle（35）It is mobile so that key （45）With minor sprocket（30）On keyway separation, minor sprocket（30）Run out of steam source, it is impossible to carries out Chain conveyer.

8. according to claim 6 use light logistic car, it is characterised in that：Body bottom includes 1 steering wheels （5）, 2 traveling wheels（47）, 2 universal wheels（48）, 1 steering wheels（5）Positioned at dolly forefront, 2 traveling wheels （47）Output shaft of the symmetrical placement in vehicle body back side（44）Two ends, two universal wheels（48）Symmetrical placement is universal in vehicle body front side Wheel（48）The wheel just landed to be under pressure.

9. according to claim 2 use light logistic car, it is characterised in that：Elevating mechanism（2）For mechanical elevating mechanism Or electrically elevating mechanism or both has concurrently；The mechanical elevating mechanism includes stepping on pedal（21）, hydraulic jack（22）With Double rocker mechanism（24）, step on pedal（21）Connect hydraulic jack（22）, hydraulic jack（22）Connect double rocker mechanism （24）；Mechanical elevating mechanism is by stepping on pedal（21）Driving guide rod continuously to swing makes hydraulic jack（22）Work, jack Top（23）Elongation so that double rocker mechanism（24）It is changed to raised configuration；The electric elevating mechanism, utilizes wire （25）, pass through two fixed pulleys（26,27）, with sliding block（28）On node be connected, sprocket wheel（29）Rotation, pulls guide rod（52）On Sliding block（28）, constantly to hydraulic jack（22）Effect, rises or falls elevating mechanism.

10. according to claim 8 use light logistic car, it is characterised in that：Output shaft（44）Two ends through advance Wheel（47）Part be provided with opening up lower telescopic hole, lower damping spring is provided with the telescopic hole（60）, in car Body（59）The bottom at rear portion is provided with stull（61）, stull（61）Bottom be provided with the lower fulcrum bar that lower end is put in telescopic hole （62）, lower fulcrum bar（62）The lower damping spring of bottom connection（60）, lower fulcrum bar（62）Bottom be downward diminishing round platform Shape, the arc spring lamination inwardly arched upward is set in telescopic hole madial wall（64）；

In stull（61）On be provided with downward opening upper telescopic hole, damping spring is provided with upper telescopic hole（65）, Upper telescopic hole inwall is provided with the upper arc spring lamination inwardly arched upward（66）, expansion link（67）Upper end is put in telescopic hole, is stretched Bar（67）With being arranged on output shaft（44）On fix bar（68）It is flexibly connected, expansion link（67）For can be along fix bar（68）Do The structure of lower movement, in expansion link（67）The side of bottom be rack structure, the rack structure and be arranged on output shaft（44） On travelling gear（69）Engagement, travelling gear（69）Also with being arranged on lower fulcrum bar（62）The rack engagement of side, works as lower fulcrum bar （62）When moving down, lower fulcrum bar（62）Rack pass through travelling gear（69）Engage expansion link（67）Rise.