CN201520621U - Straddle forklift truck - Google Patents
Straddle forklift truck Download PDFInfo
- Publication number
- CN201520621U CN201520621U CN2009201986559U CN200920198655U CN201520621U CN 201520621 U CN201520621 U CN 201520621U CN 2009201986559 U CN2009201986559 U CN 2009201986559U CN 200920198655 U CN200920198655 U CN 200920198655U CN 201520621 U CN201520621 U CN 201520621U
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- Prior art keywords
- hydraulic
- straddle
- pallet fork
- lift truck
- door frame
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- Expired - Fee Related
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- 238000007599 discharging Methods 0.000 claims description 9
- 239000010720 hydraulic oil Substances 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 22
- 230000001737 promoting effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model discloses a straddle forklift truck which comprises a lift and unloading device and a driving device, wherein the driving device comprises an engine and a hydraulic transmission device; the hydraulic transmission device comprises a hydraulic pump, a hydraulic oil tank, a reversing valve and a hydraulic cylinder which are connected through hydraulic pipelines; an output shaft of the engine is connected with an input shaft of the hydraulic pump through a clutch so as to drive the hydraulic pump; the hydraulic cylinder is provided with an ejector rod which can extend out of the hydraulic cylinder and can expand and contract up and down; and the ejector rod is connected with the lift and unloading device. The straddle forklift truck utilizes the engine as the driving motive power, so that the limiting caused by power is low, and the lift efficiency and the life capacity are high. Besides, the straddle forklift truck has the advantages of low cost, capability of being used in all weathers, simple structure, convenient maintenance, longer use life, stable unloading, safety and reliability.
Description
Technical field
The utility model relates to a kind of with the lift truck with straddle outeriggers of driving engine as the lifting driving source, mainly is applicable to fields such as weight loading and unloading.
Background technology
Present various lift truck with straddle outeriggers all is to adopt electric power or artificial lift system usually.Its principle of work is: electrical motor or manual driven Hydraulic Pump produce high pressure, thereby drive the hydraulic cylinder action, carry out the action of loading or unloading.
The elevator system that electronic straddle formula is plugged in car mainly comprises storage battery, motor, Hydraulic Pump, hydraulic actuating cylinder, and principle of work is: the driven by motor hydraulic pump works, produce high pressure, and drive hydraulic actuating cylinder and promote.When needs unloaded, the operation trigger bar unloaded.Because the motor that propulsion source is a storage battery to be driven, so that performance is influenced by storage battery is bigger.Storage battery is owing to finite capacity, so the time of continuous working is often relatively shorter and charging duration is long, general continuous working needs charging in 7-10 hour after 1 hour, make the service efficiency of motor and workability reduce greatly, can not accomplish to use at any time.And the service life of storage battery is shorter, is approximately about 1 year, and the capacity passing range of decrease in time is bigger, and period of service also can significantly reduce.As not being equipped with expensive automatic charger charging, then storage battery can overcharge or owe charging phenomenon, then can be subjected to considerable influence service life.And Circuits System than higher, causes the phenomenon that can't use owing to the circuit electric leakage usually takes place to the requirement of leak tightness, so fork truck requires than higher environment for use, and can not leave unused for a long time.
The artificial elevator system that promotes lift truck with straddle outeriggers mainly comprises hydraulic hand-pump, hydraulic actuating cylinder etc.Adopting foot-operated mode manually to drive the hydraulic pump drive hydraulic actuating cylinder mostly promotes.When needs unload, then discharge high pressure cylinder inner high voltage hydraulic oil to reach discharged purpose.Because the hoisting speed of hydraulic hand-pump mostly is greatly about 20mm/ time, if once with 2 meters height of weight lifting, then Hydraulic Pump will be worked more than 100 time, wastes time and energy and operating personal is easy to generate fatigue especially.The restriction that the hoisting capacity of hydraulic hand-pump also can be subjected to operating personal and manual pump causes promoting heavier weight.Because hydraulic hand-pump need frequently carry out work, so the loss of pumping system is big, service life is short.
Therefore, from above-mentioned two kinds of elevator system as can be seen, electronic lift truck with straddle outeriggers elevator system startability is good, simple and convenient, the easy control of lifting, but its existence need charging equipment, capital investment height, charging duration long and charging back work-hours is short, can't all-weather service etc. shortcoming, and storage battery should not be subjected to the greater impact vibration, the operation ground-surface is required than higher, and service life is shorter.Because be subjected to the restriction of accumulator capacity, motor power (output) is less, hoisting speed and hoisting capacity are subjected to certain restriction.
And the fork truck of hand hoisting is owing to adopt manual pump, and the efficient of its lifting is very low, and personnel more easily produce fatigue, and hoisting capacity is also very low.
The utility model content
Technical problem to be solved in the utility model is the defective that overcomes prior art, and a kind of simple in structure, work efficiency and hoisting capacity height, long service life, easy to operate lift truck with straddle outeriggers are provided.
For solving the problems of the technologies described above, the utility model provides a kind of lift truck with straddle outeriggers, comprise lifting and discharging gear and actuating device, described actuating device comprises driving engine and hydraulic actuator, described hydraulic actuator comprises Hydraulic Pump, hydraulic reservoir, change-over valve and hydraulic actuating cylinder, described hydraulic reservoir, Hydraulic Pump, change-over valve is connected by hydraulic tubing with hydraulic actuating cylinder, the output shaft of described driving engine is connected with the input shaft of described Hydraulic Pump, to drive described Hydraulic Pump, described hydraulic actuating cylinder has can stretch out hydraulic actuating cylinder and flexible up and down push rod, and described push rod is connected with described lifting and discharging gear.
Wherein, described lifting and discharging gear comprise the chassis, pallet fork, door frame, pallet fork framework and messenger chain assembly, described door frame is vertically set on the described chassis, described pallet fork framework moves up and down along the guide rail in the described door frame by antifriction-bearing box, be provided with the door frame crossbeam in described pallet fork frame mid portion, described pallet fork is connected the front side of described pallet fork framework, described messenger chain assembly comprises two chains, two sprocket wheels and adapter shaft, described two sprocket wheels are located at the two ends of described adapter shaft respectively, described two a chains end respectively are fixed on the described door frame crossbeam, and by described sprocket wheel, its other end is fixed on the described pallet fork framework.
Wherein, be electric clutch or on-electric power-transfer clutch at described power-transfer clutch.
Wherein, described change-over valve is connected with the lifting unloading control lever that is arranged on described door frame frame one side, by operating described lifting unloading control lever, controls the switch of described change-over valve.
Wherein, described driving engine is diesel motor or engine petrol.
Wherein, described change-over valve is a three position directional valve.
Wherein, downside is respectively equipped with front-wheel and trailing wheel in the front and back end on described chassis, and described trailing wheel is the braking universal caster wheel.
Because said structure of the present utility model improves, and has following characteristics and advantage:
Compared with prior art, advantage of the present utility model is: the utility model utilizes driving engine as driving prime power, is subjected to the restriction of power less, and the efficient of lifting and the ability of lifting are higher than electronic and manual far away.Compare electri forklift, except above advantage, the cost cost is about half of electri forklift of equal-wattage, and can all-weather service, simple in structure, easy to maintenance, longer service life.Compare hand fork lifter, unload steady, safe and reliable.
Description of drawings
Fig. 1 is the front view of the utility model lift truck with straddle outeriggers;
Fig. 2 is the lateral plan of the utility model lift truck with straddle outeriggers;
Fig. 3 is the opposite side view of the utility model lift truck with straddle outeriggers;
Fig. 4 is the fundamental diagram of the actuating device of the utility model lift truck with straddle outeriggers;
Fig. 5 is another fundamental diagram of the actuating device of the utility model lift truck with straddle outeriggers.
Mark the following drawings mark thereon in conjunction with the accompanying drawings:
The 1-door frame; 2-hydraulic actuating cylinder push rod; The 3-hydraulic actuating cylinder; 4-door frame crossbeam; Oil pipe on the 5-hydraulic actuating cylinder; The 6-driving engine; 7-Hydraulic Pump oil outlet pipe; 8-change-over valve oil return pipe; The 9-power-transfer clutch; The 10-change-over valve; 11-Hydraulic Pump oil inlet; The 12-hydraulic reservoir; Oil pipe under the 13-hydraulic actuating cylinder; The 14-Hydraulic Pump; The 15-sprocket wheel; The 16-driving chain; 17-engine throttle by-pass cock; 18-promotes the unloading control lever; The 19-front-wheel; The 20-pallet fork; 21-pallet fork framework; The 22-antifriction-bearing box; The 23-handrail; The 24-trailing wheel; The 25-pull bar; The 26-chassis; The 27-adapter shaft.
The specific embodiment
As shown in Figure 1 to Figure 3, the utility model lift truck with straddle outeriggers, comprise lifting and discharging gear and actuating device, actuating device comprises driving engine 6 and hydraulic actuator, this hydraulic actuator comprises Hydraulic Pump 14, hydraulic reservoir 12, change-over valve 10 and hydraulic actuating cylinder 3, and wherein hydraulic reservoir 12, Hydraulic Pump 14, change-over valve 10 and hydraulic actuating cylinder 9 are connected by hydraulic tubing.The output shaft of driving engine 6 is connected with the input shaft of Hydraulic Pump 14, and to drive this Hydraulic Pump 14, hydraulic actuating cylinder 14 has can stretch out hydraulic actuating cylinder 3 and flexible up and down push rod 2, and push rod 2 is connected with lifting and discharging gear.
Lifting and discharging gear comprise chassis 26, pallet fork 20, door frame 1, pallet fork framework 21 and messenger chain assembly, door frame 1 is vertically set on the chassis 26, pallet fork framework 21 moves up and down along the guide rail in the door frame 1 by antifriction-bearing box 22, be provided with the door frame crossbeam at pallet fork framework 21 middle parts, pallet fork 20 is connected the front side of pallet fork framework 21, the messenger chain assembly comprises two chains 16, two sprocket wheels 15 and adapter shaft 27, two sprocket wheels 15 are located at the two ends of adapter shaft 27 respectively, two chains 16 end respectively are fixed on the door frame crossbeam 4, and by sprocket wheel 15, its other end is fixed on the pallet fork framework 21.
Between driving engine 6 and described Hydraulic Pump 14, be provided with electric clutch or on-electric power-transfer clutch, realized the No Load Start of driving engine.Change-over valve 10 is connected with the lifting unloading control lever 18 that is arranged on door frame frame 1 one sides, promotes unloading control lever 18 by operation, the switch of control change-over valve 10.Wherein, driving engine 6 can be with diesel motor or engine petrol.Change-over valve 10 is a three position directional valve.26 front and back end downside is respectively equipped with front-wheel 19 and trailing wheel 24 on the chassis, and trailing wheel 24 is the braking universal caster wheel, can work as brake usefulness in fork truck lifting and unloading phase, plays stabilization.
In conjunction with Fig. 1-shown in Figure 3, in the present embodiment, lift truck with straddle outeriggers mainly is made up of engine petrol (or diesel motor) (hereinafter to be referred as driving engine), power-transfer clutch, Hydraulic Pump, hydraulic reservoir, change-over valve, hydraulic actuating cylinder, door frame and pallet fork, front-wheel, trailing wheel, lifting unloading control lever, engine oil door switch etc.
As Fig. 4, shown in Figure 5, its principle of work is:
Driving engine 6 drives Hydraulic Pumps 14 by power-transfer clutch 9 and produces high pressure, by hydraulic tubing to three position directional valve 10.Pallet fork 20 directly hangs on the goods shelf 21, and goods shelf 21 is by being equipped with a plurality of antifriction-bearing boxs 22, preferred four bearings, and two of every sides can move up and down in door frame 1 in-to-in guide rail.The top of door frame 1 is connected with many chains 16, and preferred two, the other end of chain 16 is fixed on the door frame crossbeam 4, and chain 16 hangs on the sprocket wheel 15, and sprocket wheel 15 is rigidly connected with the push rod 2 of double acting hydraulic cylinder 3 by adapter shaft 27.When hydraulic actuating cylinder push rod 2 upward movements, drive sprocket wheel 15 upward movements, goods shelf 21 is with upward movement, and pallet fork 20 is carried out and is promoted action.And when hydraulic actuating cylinder push rod 2 moved downward, because sprocket wheel 15 also moves downward together, goods shelf 21 moved downward, and pallet fork 20 is carried out the unloading action.When driving engine 6 had just begun to start, power-transfer clutch 9 was in released state, and Hydraulic Pump 14 is not worked, and driving engine 6 is in zero load mode of operation, thereby can easily start.When elevator system was not worked, driving engine 6 was in idling mode, and the hydraulic pressure air pump inoperative is with energy savings.When fork truck need promote, to promote unloading control lever 18 (operating handle of hand change over valve) and push raised position, oil pipe 13 pipelines are connected under interior Hydraulic Pump oil outlet pipe 7 of change-over valve this moment and the hydraulic actuating cylinder, and oil pipe 5 also will be communicated with simultaneously with the pipeline of change-over valve oil return pipe 8 on the hydraulic actuating cylinder.Regulate engine throttle by-pass cock 17, driving engine 6 is in running order, produce the high-pressure and hydraulic oil in the Hydraulic Pump 14 at this moment, and by change-over valve 10 oil pipe 13 conveying high-pressure and hydraulic oil under hydraulic actuating cylinder, drive hydraulic actuating cylinder push rod 2 upward movements, pallet fork 20 is upward movement simultaneously, weight can be promoted to desired location.When fork truck need unload thing, only need stir and promote unloading control lever 18 to unloading position, the pipeline of oil pipe 5 is connected on interior Hydraulic Pump oil outlet pipe 7 of change-over valve this moment and the hydraulic actuating cylinder, meanwhile oil pipe 13 also is communicated with simultaneously with change-over valve oil return pipe 8 under the hydraulic actuating cylinder, regulate engine throttle by-pass cock 17, driving engine is in running order, the high-pressure and hydraulic oil of Hydraulic Pump 14 interior generations this moment, and by change-over valve 10 oil pipe 5 conveying high-pressure and hydraulic oil on hydraulic actuating cylinder, driving hydraulic actuating cylinder push rod 2 moves downward, pallet fork 20 moves downward simultaneously, and fork truck can be realized steady unloading.
When lifting unloading control lever 18 seizes up the position, Hydraulic Pump oil outlet pipe 7 in the change-over valve is communicated with change-over valve oil return pipe 8, even Hydraulic Pump 14 is because maloperation is in running order, high-pressure and hydraulic oil also will be back to hydraulic reservoir 12, promote or unload action and also can not carry out, improved safety performance greatly.
The utility model also can be selected two position switching valves and single-action hydraulic cylinder for use, is that double acting hydraulic cylinder is compared with above-mentioned three position directional valve, and the position of two position switching valves has only and promotes and stall position, and single-action hydraulic cylinder lacks oil pipe 5 on the hydraulic actuating cylinder.When carrying out the lifting action, Hydraulic Pump oil outlet pipe 7 will be communicated with oil pipe under the hydraulic actuating cylinder 13, and pallet fork 20 is carried out and promoted action.When needs unload, oil pipe 13 will be communicated with change-over valve oil return pipe 8 under the hydraulic actuating cylinder, and pallet fork relies on the weight of self to fall after rise downwards, thereby carry out the unloading action.
The front-wheel of this fork truck is a flower wheel, and trailing wheel is the flower wheel of belt brake device, promoting and during unloaded operation, can realizing braking, to guarantee the safe handling of fork truck.
Change-over valve adopts three hand change over valves, and the high-pressure and hydraulic oil that the may command Hydraulic Pump produces flows or flows or be back in the hydraulic reservoir to hydraulic actuating cylinder below pipeline to hydraulic actuating cylinder top pipeline.By the operation hand change over valve, can realize lifting, unloading or the pause mode of operation of fork truck.Thereby can control the horsepower output control lifting or the discharged speed of driving engine by the engine oil door switch.When not promoting unloading operation, driving engine can cut out or be in idling mode.Can select two position switching valves and single-action hydraulic cylinder for use, promptly hydraulic efficiency pressure system is only carried out and is promoted action, and the unloading action is carried out by the own wt of pallet fork.Preferred three position directional valve of the utility model and double acting hydraulic cylinder, the stable drive non-jitter.
It should be noted that at last: above embodiment only in order to the explanation the utility model and and the described technical scheme of unrestricted the utility model; Therefore, although this specification sheets has been described in detail the utility model with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model; And all do not break away from the technical scheme and the improvement thereof of spirit and scope of the present utility model, and it all should be encompassed in the claim scope of the present utility model.
Claims (7)
1. lift truck with straddle outeriggers, it is characterized in that: described lift truck with straddle outeriggers comprises lifting and discharging gear and actuating device, described actuating device comprises driving engine and hydraulic actuator, described hydraulic actuator comprises Hydraulic Pump, hydraulic reservoir, change-over valve and hydraulic actuating cylinder, described hydraulic reservoir, Hydraulic Pump, change-over valve is connected by hydraulic tubing with hydraulic actuating cylinder, the output shaft of described driving engine is connected with the input shaft of described Hydraulic Pump by power-transfer clutch, to drive described Hydraulic Pump, described hydraulic actuating cylinder has can stretch out hydraulic actuating cylinder and flexible up and down push rod, and described push rod is connected with described lifting and discharging gear.
2. lift truck with straddle outeriggers according to claim 1, it is characterized in that: described lifting and discharging gear comprise the chassis, pallet fork, door frame, pallet fork framework and messenger chain assembly, described door frame is vertically set on the described chassis, described pallet fork framework moves up and down along the guide rail in the described door frame by antifriction-bearing box, be provided with the door frame crossbeam in described pallet fork frame mid portion, described pallet fork is connected the front side of described pallet fork framework, described messenger chain assembly comprises two chains, two sprocket wheels and adapter shaft, described two sprocket wheels are located at the two ends of described adapter shaft respectively, described two a chains end respectively are fixed on the described door frame crossbeam, and by described sprocket wheel, its other end is fixed on the described pallet fork framework.
3. lift truck with straddle outeriggers according to claim 1 and 2 is characterized in that: at described power-transfer clutch is electric clutch or on-electric power-transfer clutch.
4. lift truck with straddle outeriggers according to claim 1 and 2 is characterized in that: described change-over valve is connected with the lifting unloading control lever that is arranged on described door frame frame one side, by controlling described lifting unloading control lever, controls the switch of described change-over valve.
5. lift truck with straddle outeriggers according to claim 1 and 2 is characterized in that: described driving engine is diesel motor or engine petrol.
6. lift truck with straddle outeriggers according to claim 1 and 2 is characterized in that: described change-over valve is a three position directional valve.
7. lift truck with straddle outeriggers according to claim 1 and 2 is characterized in that: downside is respectively equipped with front-wheel and trailing wheel in the front and back end on described chassis, and described trailing wheel is the braking universal caster wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201986559U CN201520621U (en) | 2009-11-02 | 2009-11-02 | Straddle forklift truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201986559U CN201520621U (en) | 2009-11-02 | 2009-11-02 | Straddle forklift truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201520621U true CN201520621U (en) | 2010-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201986559U Expired - Fee Related CN201520621U (en) | 2009-11-02 | 2009-11-02 | Straddle forklift truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201520621U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934998A (en) * | 2010-10-19 | 2011-01-05 | 中国人民解放军65547部队装备部 | Accompanying-type self-loading and unloading electric forklift |
| CN102072015A (en) * | 2010-12-31 | 2011-05-25 | 潍柴动力股份有限公司 | Engine |
| CN108821181A (en) * | 2018-06-13 | 2018-11-16 | 嘉善缔嘉装饰材料有限公司 | A kind of cardboard promotion conveying device |
-
2009
- 2009-11-02 CN CN2009201986559U patent/CN201520621U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934998A (en) * | 2010-10-19 | 2011-01-05 | 中国人民解放军65547部队装备部 | Accompanying-type self-loading and unloading electric forklift |
| CN101934998B (en) * | 2010-10-19 | 2012-06-27 | 中国人民解放军65547部队装备部 | Accompanying-type self-loading and unloading electric forklift |
| CN102072015A (en) * | 2010-12-31 | 2011-05-25 | 潍柴动力股份有限公司 | Engine |
| CN108821181A (en) * | 2018-06-13 | 2018-11-16 | 嘉善缔嘉装饰材料有限公司 | A kind of cardboard promotion conveying device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20121102 |