CN105110253A - Hand-operated carrier - Google Patents
Hand-operated carrier Download PDFInfo
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- CN105110253A CN105110253A CN201510438827.5A CN201510438827A CN105110253A CN 105110253 A CN105110253 A CN 105110253A CN 201510438827 A CN201510438827 A CN 201510438827A CN 105110253 A CN105110253 A CN 105110253A
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- China
- Prior art keywords
- strut bar
- transport trolley
- supporting base
- fork
- revolute pair
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- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses a hand-operated carrier comprising a handle, a frame and a tread-lifting device, wherein the handle is composed of handrails and an upright rod; the frame is composed of a bull wheel, fork wheels, a fork, a front plate, a top plate and a supporting seat; each of two sides of the supporting seat and the front plate is provided with a shake frame; each shake frame is connected with a link assembly at the lower end of the fork; the link assembly is connected with the fork wheels so as to support the front end of the fork; and the tread-lifting device is composed of a link mechanism which can be disassembled into a parallelogram link mechanism and a second-class bar unit. A downward acting force is applied to a tread-lifting plate of the parallelogram link mechanism in the link mechanism, and the acting force on the tread-lifting plate can be amplified and transferred to the second-class bar unit according to the lever principle so as to enable a supporting bar I and a supporting bar II in the bar unit to be on a collinear position, so that the fork of the carrier can rapidly lift.
Description
Technical field
The present invention relates to a kind of manual transport trolley.
Background technology
Manual type transport trolley to hoist handbarrow as one, be widely used in factory floor, warehouse and logistics, that commonly uses in existing manual transport trolley has a kind of hand hydraulic carrier, the vehicle frame of this hand hydraulic carrier, because including the load platform of one group of pallet fork form, is therefore generally referred to as manual pallet trucks again.The vehicle frame top board that the structure of this transport trolley also comprises handle, supporting base, the oil pump be arranged on supporting base, hydraulic actuating cylinder and is connected with the piston rod upper end of hydraulic actuating cylinder, be connected by header board between top board with pallet fork, oil pump and hydraulic actuating cylinder are as the power system of transport trolley, and hoisting of pallet fork needs Driven by Hydraulic Cylinder to complete.When goods declines, the weight of pallet fork and goods makes vehicle frame automatic fall-back to bottom.In use procedure, be in different gears by control handle and regulate the hoisting of vehicle frame, neutral and decline.Prior art hoists in process to be needed constantly back and forth to press handle, liquid dielectric is made constantly to enter in hydraulic actuating cylinder rodless cavity from oil pump, promote piston rod upward movement, vehicle frame top board gets a promotion, pallet fork and cargo lifting, therefore existing hydraulic forklift hoists comparatively slow, and for improving handling efficiency, this hand hydraulic carrier lifting velocity should increase.In addition, hydraulic actuating cylinder is as the vitals of this manual transport trolley, require very high for preventing high-pressure liquid medium seepage to its crudy, HYDRAULIC CONTROL SYSTEM valve many employings steel ball etc., though structure is simple, this undamped valve core structure makes pallet fork decline hourly velocity too fast, and cushion characteristic is not obvious, if additionally increase governor valve, then add hydraulic efficiency pressure system complexity.
Summary of the invention
The technical matters that the present invention solves is, provides a kind of manual transport trolley, and this manual transport trolley can fast lifting goods, improves handling efficiency.
The present invention solves the problems of the technologies described above and realizes by the following technical solutions: a kind of manual transport trolley, comprise handle, vehicle frame, wherein handle is made up of handrail and vertical rod, vehicle frame is made up of bull wheel, fork wheel, pallet fork, header board, top board and supporting base, supporting base is connected reel cage respectively with header board both sides, this reel cage is connected with the connecting rod assembly of pallet fork lower end, and connecting rod assembly and fork are taken turns to be connected and be used for pallet fork front end to prop up; This transport trolley also comprises stepping on and rises device, this is stepped on and rises device and form primarily of a set of connecting rod mechanism, this connecting rod mechanism can be analyzed to a parallelogram linkage and a secondary bar group, wherein parallelogram linkage comprise step on lift slab, the inner support affixed with described supporting base and outer support, with step on the side link I and side link II that lift slab and support be connected with revolute pair respectively; Comprise with strut bar I, strut bar II and the strut bar III of revolute pair connection in secondary bar group and form the sleeve of moving sets with described vertical rod, strut bar I is connected with revolute pair with supporting base, strut bar II is connected with revolute pair with sleeve, and strut bar III is connected with revolute pair with side link II; Described sleeve and described top board affixed.
In technique scheme, owing to have employed a set of connecting rod mechanism as main driving mechanism, instead of original hydraulic actuating cylinder power system.Downward application force is applied to the lift slab of stepping on of parallel-crank mechanism in this connecting rod mechanism, utilize lever principle, the application force stepped on lift slab can be amplified the strut bar III be passed to step by step in secondary bar group, strut bar III pulls the point of connection of strut bar I and strut bar II, make strut bar I, both strut bars II are in collinear position, now strut bar II promotes sleeve and rises to extreme higher position along vertical rod, top board also rises to a high position with sleeve, pallet fork front end hoists by connecting rod assembly, vehicle frame entirety gets a promotion, and due to the general comparatively heaviness of goods, goods and vehicle frame gravity direction are straight down, with strut bar I, strut bar II conllinear, be not enough to overcome strut bar I, strut bar II dead center position, now carrier pallet fork can secure ratcs after hoisting.
As a kind of preferred version of manual transport trolley of the present invention, described supporting base is also provided with for the spacing positioning plate of described strut bar I, this positioning plate has connect with revolute pair step on and fall plate, step on and fall plate there is the end face can touching strut bar I when it rotates.For this reason, when to when stepping on lift slab force, when strut bar I, strut bar II reach collinear position, namely strut bar I touches positioning plate, thus make strut bar I, strut bar II keeps collinear position, can complete rotation and the movement of transport trolley; When to step on fall plate apply downward application force time, step on and fall plate end face and can touch strut bar I, thus destroy strut bar I, strut bar II collinear position, under goods deadweight condition, pallet fork can decline.
As the another kind of preferred version to manual transport trolley of the present invention, described supporting base is also provided with hydraulic actuating cylinder, the piston rod of this hydraulic actuating cylinder is by cab apron and described sleeve connection, on piston, symmetry offers at least two through holes, piston divides into flow regulator pieces, be provided with gap between piston and flow regulator pieces, the projection area of a circle of flow regulator pieces is less than the piston projection area of a circle but the through hole that can cover on piston.In above-mentioned setting, adopt hydraulic actuating cylinder to fall parts as slow, structure is simple, and crudy requires to reduce, and it utilizes piston and flow regulator pieces gap, and goods descending speed is controlled, and goods decline buffering effect is obvious.
As another preferred version to manual transport trolley of the present invention, described vertical rod through supporting base, and is equipped with lining outside the section of passing, and establishes thrust baring between this lining and supporting base, and the rotating shaft of installing bull wheel established by the vertical rod section of passing and lining.This set, makes handle can directly control vehicle frame bull wheel, manoeuvrable, compact conformation.
As another preferred version to manual transport trolley of the present invention, one end that described strut bar III is connected with strut bar I, strut bar II has elongated hole along this rod member direction, makes strut bar III and strut bar I, strut bar II connection mode change sliding pin pair into by revolute pair.This setting makes strut bar III contain revolute pair and moving sets with the connection mode of strut bar I, strut bar II, revolute pair makes that strut bar III can pull strut bar I, strut bar II reaches conllinear, and moving sets then can make strut bar III move freely after strut bar I, strut bar II conllinear and not affect the collinear relationship of strut bar I, strut bar II.
As the further improvement of another preferred version to manual transport trolley of the present invention, between described strut bar III and described outer support, establish spring.When this setting makes to step on application force cancellation on lift slab, strut bar III one end is moved along strut bar I and strut bar II point of connection under the action of the spring, the other end pulls side link II to make parallel-crank mechanism counter motion, step on lift slab and rise to certain position of below vertex, rotate to prevent the stepping on too low interference transport trolley in lift slab position and move.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is the non-lift structure schematic diagram of manual transport trolley vehicle frame of the present invention.
Fig. 2 is structural representation after manual transport trolley vehicle frame of the present invention promotes.
Fig. 3 is hydraulic actuating cylinder local structure schematic diagram of the present invention.
In Fig. 1,1. fork wheel 2. pallet fork 3. header board 4. sleeve 5. top board 6. vertical rod 7. handrail 8. side links II 9. step on lift slab 10. side link I 11. strut bar III 12. positioning plate 13. supporting base 14. thrust baring 15. lining 16. bull wheel 17. reel cage.
In Fig. 2,18. strut bar I 19. outer supports 20. are stepped on and are fallen plate 21. inner support 22. strut bar II 23. cab apron 24. hydraulic actuating cylinder.
25. piston rod 26. piston 27. flow regulator pieces in Fig. 3.
Detailed description of the invention
As Fig. 1, shown in Fig. 2, the handle of manual transport trolley of the present invention is made up of handrail 7 and vertical rod 6, vehicle frame is by bull wheel 16, fork wheel 1, pallet fork 2, header board 3, top board 5 and supporting base 13 form, supporting base 13 is connected reel cage 17 respectively with header board 3 both sides, this reel cage 17 is connected with the connecting rod assembly of pallet fork 2 lower end, connecting rod assembly is connected with fork wheel 1 and is used for the front end of pallet fork 2 to prop up, this transport trolley also comprises stepping on and rises device, this is stepped on and rises device and form primarily of a set of connecting rod mechanism, this connecting rod mechanism can be analyzed to a parallelogram linkage and a secondary bar group, wherein parallelogram linkage comprises and steps on lift slab 9, the inner support 21 affixed with supporting base 13 and outer support 19, with step on the side link I 10 and side link II 8 that lift slab 9 and outer support 19 be connected with revolute pair respectively, comprise with strut bar I 18, strut bar II 22 and the strut bar III 11 of revolute pair connection in secondary bar group and form the sleeve 4 of moving sets with vertical rod 6, strut bar I 18 is connected with revolute pair with supporting base 13, strut bar II 22 is connected with revolute pair with sleeve 4, and strut bar III 11 is connected with revolute pair with side link II 8, sleeve 4 is affixed with top board 5.
Supporting base 13 is also provided with for the spacing positioning plate 12 of strut bar I 18, this positioning plate 12 has connect with revolute pair step on and fall plate 20, step on and fall plate 20 there is the end face can touching strut bar I 18 when it rotates.
Vertical rod 6 through supporting base 13, and is equipped with lining 15 outside the section of passing, establish thrust baring 14 between this lining 15 and supporting base 13, and the rotating shaft of installing bull wheel 16 established by vertical rod 6 section of passing and lining 15.
One end that strut bar III 11 is connected with strut bar I 18, strut bar II 22 has elongated hole along this rod member direction, make strut bar III 11 and strut bar I 18, strut bar II 22 connection mode change sliding pin pair into by revolute pair, namely comprise revolute pair and moving sets two kinds of kinematic pairs.Spring is established between strut bar III 11 and outer support 19.
As shown in Figure 3, supporting base 13 is also provided with hydraulic actuating cylinder 24, the piston rod 25 of this hydraulic actuating cylinder 24 is connected with sleeve 4 by cab apron 23, on piston 26, symmetry offers at least two through holes, piston 26 divides into flow regulator pieces 27, be provided with gap between piston 26 and flow regulator pieces 27, the projection area of a circle of flow regulator pieces 27 is less than piston 26 and projects the area of a circle but the through hole that can cover on piston 26.
Promote the handrail 7 of manual transport trolley of the present invention, moved to goods vantage point place to be handled, goods is positioned on pallet fork 2, step on to rise in device to transport trolley and step on lift slab 9 and impose downward application force, side link I 10 and side link II 8 rotate around it and a little rotate, and the external part of side link II 8 will pull strut bar III 11 in secondary bar group to move, due to strut bar III 11 having elongated hole, strut bar III 11 is along itself and strut bar I 18, strut bar II 22 place moves, and rotate around itself and side link II 8 point of connection, when strut bar III 11 moves to its elongated hole end and strut bar I 18, during the revolute pair effect of strut bar II 22 place, strut bar III 11 will pull strut bar I 18, strut bar II 22 is around its run-on point rotation separately, simultaneously, strut bar II 22 also will promote sleeve 4 along vertical rod 6 upward movement, sleeve 4 will promote transport trolley top board 5 upward movement, fork wheel 1 rises by reel cage 17 and connecting rod assembly combined action, pallet fork 2 front end gets a promotion.When strut bar I 18 arrives collinear position with strut bar II 22, strut bar I 18 touches positioning plate 12, can cancel stepping on application force on lift slab 9, and due to goods Action of Gravity Field on pallet fork 2, strut bar I 18 and strut bar II 22 will keep collinear position residing for it constant, now can promote handrail 1, by portage to assigned address.
After pallet fork 2 hoists, the application force stepped on lift slab 9 is cancelled, spring now between strut bar III 11 and outer support 19 will make strut bar III 11 counter motion, strut bar III 11 one end is around the point of connection of itself and side link II 8 external part is counter-rotational while, its another be provided with elongated hole end and will move along strut bar I 18, strut bar II 22 place, other component in parallel-crank mechanism is also by counter motion, step on lift slab 9 by upward movement certain distance, transport trolley is stepped on lift slab 9 when carrying out unitary rotation or moving and can not be interfered with low addendum on ground or ground.
Hoist in process at pallet fork 2, because the piston rod 25 of hydraulic actuating cylinder 24 is connected with sleeve 4 by cab apron 23, piston rod 25 will with sleeve 4 upward movement, due to piston 26 having through hole, the liquid dielectric of hydraulic actuating cylinder 24 rod chamber and piston 26 upper end compresses flow regulator pieces 27, gap between piston 26 and flow regulator pieces 27 will be expanded to maximum, and liquid dielectric will enter in rodless cavity fast.
Goods needs unloading after arriving appointed place, and for ensureing goods steady fall, the descending speed of pallet fork 2 also needs to control.Fall plate 20 apply downward application force to stepping on, its end face touches strut bar I 18, makes strut bar I 18 and strut bar II 22 overcome its dead center position, after its coUinear state of destruction, can cancel stepping on the application force fallen on plate 20.Under goods and the effect of vehicle frame self gravitation, pallet fork 2 declines starting, top board 5 is with moving sleeve 4 to decline, application force is passed to piston rod 25 by cab apron 23 by sleeve 4, and piston 26 will compress flow regulator pieces 27, and gap between the two will reduce, the resistance that liquid dielectric flows into rodless cavity from rod chamber increases, flow rate of liquid will be controlled, and the speed that pallet fork 2 and goods decline also is controlled, and be enough to ensure that goods steadily declines.
In the process that pallet fork 2 declines, reel cage 17 and connecting rod assembly combined action make fork take turns wheel carrier decline on 1, and pallet fork 2 front end reduces; Strut bar II 22 is by while constantly moving downward under acting at sleeve 4, strut bar I 18 and strut bar II 22 also will along its separately run-on point rotate backward, strut bar III 11 also will drive side link II 22 counter motion, when pallet fork 2 is down to lowest order, step on and rise device and also will complete reset, step on lift slab 9 and will rise to a high position, for next working cycle is prepared.
Manual transport trolley of the present invention can fast lifting, and secure ratcs, slowly declines, and Cai Sheng mechanism make use of lever principle, operating personal can be amplified several times to the application force that parallel-crank mechanism applies and easily promoted by goods.Reduce the requirement on machining accuracy of the hydraulic actuating cylinder in existing hydraulic forklift technology in transport trolley of the present invention, reduce transport trolley car productive costs.
Finally illustrate, the manual transport trolley that above embodiment is mentioned, be not limited to this case and diagram is provided.Those of ordinary skill in the art should be appreciated that and can modify to technical scheme of the present invention or equivalent replacement, and does not depart from aim and the scope of technical solution of the present invention, and it all should be encompassed in the middle of right of the present invention.
Claims (6)
1. a manual transport trolley, comprise handle, vehicle frame, wherein handle is made up of handrail and vertical rod, vehicle frame is by bull wheel, fork wheel, pallet fork, header board, top board and supporting base composition, supporting base is connected reel cage respectively with header board both sides, this reel cage is connected with the connecting rod assembly of pallet fork lower end, connecting rod assembly and fork are taken turns to be connected and are used for pallet fork front end to prop up, it is characterized in that: this transport trolley also comprises stepping on and rises device, this is stepped on and rises device and form primarily of a set of connecting rod mechanism, this connecting rod mechanism can be analyzed to a parallelogram linkage and a secondary bar group, wherein parallelogram linkage comprises and steps on lift slab, the inner support affixed with described supporting base and outer support, with step on the side link I and side link II that lift slab and support be connected with revolute pair respectively, comprise with strut bar I, strut bar II and the strut bar III of revolute pair connection in secondary bar group and form the sleeve of moving sets with described vertical rod, strut bar I is connected with revolute pair with supporting base, strut bar II is connected with revolute pair with sleeve, and strut bar III is connected with revolute pair with side link II, described sleeve and described top board affixed.
2. manual transport trolley according to claim 1, it is characterized in that: described supporting base is also provided with for the spacing positioning plate of described strut bar I, this positioning plate has connect with revolute pair step on and fall plate, step on and fall plate there is the end face can touching strut bar I when it rotates.
3. manual transport trolley according to claim 1, it is characterized in that: described supporting base is also provided with hydraulic actuating cylinder, the piston rod of this hydraulic actuating cylinder is by cab apron and described sleeve connection, on piston, symmetry offers at least two through holes, piston divides into flow regulator pieces, be provided with gap between piston and flow regulator pieces, the projection area of a circle of flow regulator pieces is less than the piston projection area of a circle but the through hole that can cover on piston.
4. manual transport trolley according to claim 1, is characterized in that: described vertical rod through supporting base, and is equipped with lining outside the section of passing, and establishes thrust baring between this lining and supporting base, and the rotating shaft of installing bull wheel established by the vertical rod section of passing and lining.
5. manual transport trolley according to claim 1, it is characterized in that: one end that described strut bar III is connected with strut bar I, strut bar II has elongated hole along this rod member direction, make strut bar III and strut bar I, strut bar II connection mode change sliding pin pair into by revolute pair.
6. manual transport trolley according to claim 5, is characterized in that: establish spring between described strut bar III and described outer support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510438827.5A CN105110253B (en) | 2015-07-24 | 2015-07-24 | A kind of manual transport trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510438827.5A CN105110253B (en) | 2015-07-24 | 2015-07-24 | A kind of manual transport trolley |
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| Publication Number | Publication Date |
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| CN105110253A true CN105110253A (en) | 2015-12-02 |
| CN105110253B CN105110253B (en) | 2017-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510438827.5A Active CN105110253B (en) | 2015-07-24 | 2015-07-24 | A kind of manual transport trolley |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108217114A (en) * | 2018-02-27 | 2018-06-29 | 河北超靓工贸有限公司 | A kind of plank handling support plate vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2161599Y (en) * | 1993-07-05 | 1994-04-13 | 杭州液压工具总厂 | Hand-operated hydraulic transportation vehicle |
| FR2718093B1 (en) * | 1994-03-30 | 1996-04-26 | Mic | Trolley for handling pallets. |
| JP2002145599A (en) * | 2000-11-14 | 2002-05-22 | Daiyu Kk | Drum porter with suspension scale |
| CN101602474A (en) * | 2009-06-24 | 2009-12-16 | 总装备部工程设计研究总院 | A kind of hand hydraulic carrier |
| CN202400784U (en) * | 2011-12-24 | 2012-08-29 | 吴灏 | Pedal lifter |
| CN202897944U (en) * | 2012-10-09 | 2013-04-24 | 兴化东华齿轮有限公司 | Feeding forklift |
-
2015
- 2015-07-24 CN CN201510438827.5A patent/CN105110253B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2161599Y (en) * | 1993-07-05 | 1994-04-13 | 杭州液压工具总厂 | Hand-operated hydraulic transportation vehicle |
| FR2718093B1 (en) * | 1994-03-30 | 1996-04-26 | Mic | Trolley for handling pallets. |
| JP2002145599A (en) * | 2000-11-14 | 2002-05-22 | Daiyu Kk | Drum porter with suspension scale |
| CN101602474A (en) * | 2009-06-24 | 2009-12-16 | 总装备部工程设计研究总院 | A kind of hand hydraulic carrier |
| CN202400784U (en) * | 2011-12-24 | 2012-08-29 | 吴灏 | Pedal lifter |
| CN202897944U (en) * | 2012-10-09 | 2013-04-24 | 兴化东华齿轮有限公司 | Feeding forklift |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108217114A (en) * | 2018-02-27 | 2018-06-29 | 河北超靓工贸有限公司 | A kind of plank handling support plate vehicle |
| CN108217114B (en) * | 2018-02-27 | 2023-12-08 | 河北超靓工贸有限公司 | Plate loading and unloading vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105110253B (en) | 2017-08-11 |
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