CN105110253B - A kind of manual transport trolley - Google Patents
A kind of manual transport trolley Download PDFInfo
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- CN105110253B CN105110253B CN201510438827.5A CN201510438827A CN105110253B CN 105110253 B CN105110253 B CN 105110253B CN 201510438827 A CN201510438827 A CN 201510438827A CN 105110253 B CN105110253 B CN 105110253B
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- support bar
- fulcrum bearing
- transport trolley
- pallet fork
- piston
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Abstract
The invention discloses a kind of manual transport trolley, including 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, foreboard, top plate and fulcrum bearing, fulcrum bearing and foreboard both sides connect reel cage respectively, the reel cage is connected with the link assembly of pallet fork lower end, link assembly is connected to prop up pallet fork front end with fork wheel, the carrier also steps on a liter device including what a set of linkage was constituted, and the linkage can be analyzed to a parallelogram linkage and two grades of bar groups.Down force is applied to the lift slab of stepping on of parallel-crank mechanism in the linkage, utilize lever principle, the active force stepped on lift slab amplification can be transferred to two grades of bar groups, both support bar I, support bar II in the bar group is in collinear position, carrier pallet fork being capable of fast lifting.
Description
Technical field
The present invention relates to a kind of manual transport trolley.
Background technology
Hand carrier is widely used in factory floor, warehouse and logistics as a kind of raising handbarrow, existing
There is that is commonly used in manual transport trolley to have a kind of hand hydraulic carrier, the vehicle frame of this hand hydraulic carrier is because including one group
The load platform of pallet fork form, therefore typically it is also referred to as manual pallet trucks.The structure of this carrier also include handle,
Fulcrum bearing, the oil pump being arranged in fulcrum bearing, hydraulic cylinder and the vehicle frame top plate being connected with the piston rod upper end of hydraulic cylinder, top plate with
Connected between pallet fork by foreboard, oil pump and hydraulic cylinder are as the dynamical system of carrier, and the raising of pallet fork needs hydraulic cylinder to drive
It is dynamic to complete.When goods declines, the weight of pallet fork and goods makes vehicle frame automatic fall-back to bottom.During use, by controlling hand
Handle is in different gears to adjust the raising, neutral and decline of vehicle frame.Needed during prior art raising it is constantly reciprocal by
Handle is pressed, liquid medium is constantly entered from oil pump in hydraulic cylinder rodless cavity, promotes piston rod to move upwards, vehicle frame top plate is obtained
Lifting, pallet fork and cargo lifting, therefore existing hydraulic forklift raising is slower, to improve the efficiency of loading and unloading, this hand-hydraulic is carried
Car lifting velocity should increase.In addition, important component of the hydraulic cylinder as this manual transport trolley, to prevent high-pressure liquid medium
Seepage requires very high to its crudy, using steel ball etc. more than HYDRAULIC CONTROL SYSTEM valve, though simple in construction, this undamped valve
Excessive velocities when cored structure declines pallet fork, shock-absorbing capacity is not obvious, if additionally increasing flow speed control valve, adds hydraulic system and answers
Miscellaneous degree.
The content of the invention
Present invention solves the technical problem that being that, there is provided a kind of manual transport trolley, this manual transport trolley can quickly rise
Goods is risen, the efficiency of loading and unloading is improved.
The present invention is solved above-mentioned technical problem and realized using following technical scheme：A kind of manual transport trolley, including handle,
Vehicle frame, wherein handle are made up of handrail and vertical rod, and vehicle frame is made up of bull wheel, fork wheel, pallet fork, foreboard, top plate and fulcrum bearing, is supported
Seat and foreboard both sides connect reel cage respectively, and the reel cage is connected with the link assembly of pallet fork lower end, and link assembly is connected use with fork wheel
Propped up in by pallet fork front end；The carrier also includes stepping on a liter device, and this is stepped on liter device and is mainly made up of a set of linkage, the company
Linkage can be analyzed to a parallelogram linkage and two grades of bar groups, and wherein parallelogram linkage is included
Step on lift slab, the inner support affixed with the fulcrum bearing and support arm, with stepping on the frame linking that lift slab and support are connected with revolute pair respectively
Bar I and side link II；In two grades of bar groups comprising the support bar I, support bar II and the support bar III that are connected with revolute pair and with it is described
Vertical rod forms the sleeve of prismatic pair, and support bar I is connected with fulcrum bearing with revolute pair, and support bar II is connected with sleeve with revolute pair,
Support bar III is connected with side link II with revolute pair；The sleeve and the top plate are affixed.
In the above-mentioned technical solutions, as a result of a set of linkage as main driving mechanism, it instead of original hydraulic pressure
Cylinder dynamical system.Down force is applied to the lift slab of stepping on of parallel-crank mechanism in the linkage, using lever principle, i.e.,
The active force stepped on lift slab can be amplified to the support bar III being transferred to step by step in two grades of bar groups, support bar III pulls the He of support bar I
The tie point of support bar II, making support bar I, support bar II, both are in collinear position, and now support bar II promotes sleeve edge vertical
Bar rises to extreme higher position, and top plate also rises to a high position with sleeve, and link assembly integrally gets a promotion pallet fork front end raising, vehicle frame,
It is not enough and because goods is general more heavy, goods and vehicle frame gravity direction are straight down, conllinear with support bar I, support bar II
, now being capable of secure ratcs after carrier pallet fork raising to overcome support bar I, the dead-centre position of support bar II.
As a kind of preferred scheme of manual transport trolley of the present invention, it is additionally provided with the fulcrum bearing for the support bar I
Have on spacing limiting plate, the limiting plate and step on drop plate with what revolute pair was connected, step on drop plate have can touch support when it is rotated
The end face of bar I.Therefore, when to stepping on lift slab force, when support bar I, support bar II reach collinear position, support bar I is touched
To limiting plate, so that support bar I, support bar II keep collinear position, the rotation and movement of carrier can be completed；When to stepping on drop
When plate applies down force, support bar I can be touched by stepping on drop plate end face, so that support bar I, the collinear position of support bar II are destroyed,
Under the conditions of goods deadweight, pallet fork can decline.
As another preferred scheme to manual transport trolley of the present invention, hydraulic cylinder is additionally provided with the fulcrum bearing, the liquid
The piston rod of cylinder pressure symmetrically opens up at least two through holes, piston divides into flow regulator pieces by cab apron and the sleeve connection on piston,
Gap is provided between piston and flow regulator pieces, the projection area of a circle of flow regulator pieces is less than piston and projects the area of a circle but can cover on piston
Through hole.Simple in construction using hydraulic cylinder as slow drop part in above-mentioned setting, crudy requires reduction, and it utilizes piston
With flow regulator pieces gap, controlled goods decrease speed, it is obvious that goods declines buffering effect.
As another preferred scheme to manual transport trolley of the present invention, the vertical rod passes through fulcrum bearing, and passes outside section
Equipped with bushing, thrust bearing is set between the bushing and fulcrum bearing, vertical rod passes the rotating shaft for being set on section and bushing and installing bull wheel.It is this
Set, handle is directly controlled vehicle frame bull wheel, manoeuvrable, compact conformation.
As another preferred scheme to manual transport trolley of the present invention, the support bar III and support bar I, support bar II
One end of connection is provided with elongated hole along the rod member direction, support bar III is turned with support bar I, the connected mode of support bar II by revolute pair
It is changed into sliding pin pair.The setting makes support bar III contain revolute pair and prismatic pair with support bar I, the connected mode of support bar II,
Revolute pair makes support bar III that support bar I, support bar II can be pulled to reach collinearly, prismatic pair can then make support bar III support bar I,
Moved freely after support bar II is conllinear without influenceing the collinear relationship of support bar I, support bar II.
As the further improvement of another preferred scheme to manual transport trolley of the present invention, the support bar III with it is described
Spring is set between support arm.When the setting makes to step on active force cancellation on lift slab, the one end of support bar III edge support under the action of the spring
Bar I and the movement of the tie point of support bar II, the other end pull side link II to make parallel-crank mechanism counter motion, step on lift slab and rise to
Below peak at certain position, rotated and mobile with preventing from stepping on the too low interference carrier in lift slab position.
Brief description of the drawings
The embodiment to the present invention is described in further detail below in conjunction with the accompanying drawings.
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 lifting of the present invention.
Fig. 3 is present hydraulic cylinder partial structural diagram.
The side link II 9. of 1. 7. handrail of fork wheel 2. pallet fork, 3. foreboard, 4. sleeve, 5. top plate, 6. vertical rod 8. in Fig. 1
Step on the bull wheel of 15. bushing of lift slab 10. side link, I 11. support bar, III 12. limiting plate, 13. fulcrum bearing, 14. thrust bearing 16.
17. reel cage.
The support arm 20. of 18. support bar I 19. steps on the cab apron of 22. support bar of drop 21. inner support of plate II 23. in Fig. 2
24. hydraulic cylinder.
The flow regulator pieces of 25. piston rod, 26. piston 27. in Fig. 3.
Embodiment
As shown in Figure 1 and Figure 2, the handle of manual transport trolley of the present invention is made up of handrail 7 and vertical rod 6, vehicle frame by bull wheel 16,
Fork wheel 1, pallet fork 2, foreboard 3, top plate 5 and fulcrum bearing 13 are constituted, and fulcrum bearing 13 and the both sides of foreboard 3 connect reel cage 17 respectively, and this shakes
Frame 17 is connected with the link assembly of the lower end of pallet fork 2, and link assembly is connected to prop up the front end of pallet fork 2 with fork wheel 1, the carrying
Car also include step on a liter device, this is stepped on liter device and is mainly made up of a set of linkage, the linkage can be analyzed to one it is parallel
Quadrilateral connecting rod mechanism and two grades of bar groups, wherein parallelogram linkage comprising stepping on lift slab 9, it is affixed with fulcrum bearing 13
Inner support 21 and support arm 19, the side link I 10 and side link II that are connected respectively with revolute pair with stepping on lift slab 9 and support arm 19
8；In two grades of bar groups shifting is formed comprising support bar I 18, support bar II 22 and the support bar III 11 connected with revolute pair and with vertical rod 6
Secondary sleeve 4 is moved, support bar I 18 is connected with fulcrum bearing 13 with revolute pair, and support bar II 22 is connected with sleeve 4 with revolute pair, branch
Strut III 11 is connected with side link II 8 with revolute pair；Sleeve 4 and top plate 5 are affixed.
It is additionally provided with to have on the limiting plate 12 spacing for support bar I 18, the limiting plate 12 in fulcrum bearing 13 and is connected with revolute pair
Connect step on drop plate 20, step on drop plate 20 have can touch the end face of support bar I 18 when it is rotated.
Vertical rod 6 passes through fulcrum bearing 13, and passes outside section equipped with bushing 15, and thrust axis is set between the bushing 15 and fulcrum bearing 13
14 are held, vertical rod 6 passes the rotating shaft for being set on section and bushing 15 and installing bull wheel 16.
One end that support bar III 11 is connected with support bar I 18, support bar II 22 is provided with elongated hole along the rod member direction, makes support
Bar III 11 is changed into sliding pin pair with support bar I 18, the connected mode of support bar II 22 by revolute pair, i.e., comprising revolute pair and prismatic pair
Two kinds of kinematic pairs.Spring is set between support bar III 11 and support arm 19.
As shown in figure 3, being additionally provided with hydraulic cylinder 24 in fulcrum bearing 13, the piston rod 25 of the hydraulic cylinder 24 passes through cab apron 23 and set
Cylinder 4 is connected, and symmetrically opens up at least two through holes on piston 26, piston 26 divides into flow regulator pieces 27, between piston 26 and flow regulator pieces 27
Provided with gap, the projection area of a circle of flow regulator pieces 27 is less than piston 26 and projects the area of a circle but can cover the through hole on piston 26.
The handrail 7 of manual transport trolley of the present invention is promoted, is moved at goods vantage point to be handled, goods is put
It is placed on pallet fork 2, carrier is stepped on and lift slab 9 is stepped in liter device imposes down force, side link I 10 and side link II 8 are around it
Run-on point is rotated down, and the external part of side link II 8 pulls on the motion of support bar III 11 in two grades of bar groups, due to support bar III
Be provided with elongated hole on 11, support bar III 11 along it with being moved at support bar I 18, support bar II 22, and around itself and side link II 8
Tie point is rotated, when support bar III 11 moves to its long bore ends with rotating side effect at support bar I 18, support bar II 22,
Support bar III 11 pulls on support bar I 18, support bar II 22 around its each run-on point rotation, meanwhile, support bar II 22 will also be pushed away
Moving sleeve 4 is moved upwards along vertical rod 6, and sleeve 4, which will be promoted, carries the motion upwards of roof panels 5, and reel cage 17 and link assembly are made jointly
Risen with by fork wheel 1, the front end of pallet fork 2 gets a promotion.When support bar I 18 and support bar II 22 reach collinear position, support bar I
18 touch limiting plate 12, can will step on lift slab 9 active force and cancel, and due to goods Action of Gravity Field on pallet fork 2, support bar I 18 with
Support bar II 22 will keep its residing collinear position constant, can now promote handrail 1, goods is carried into specified location.
After the raising of pallet fork 2, the active force stepped on lift slab 9 is cancelled, now the spring between support bar III 11 and support arm 19
The counter motion of support bar III 11 will be made, the one end of support bar III 11 is counter-rotational around its tie point with the external part of side link II 8
Meanwhile, its is another will to move along support bar I 18, support bar II 22 provided with long nose end, other structures in parallel-crank mechanism
Part is also by counter motion, and certain distance will be moved upwards by stepping on lift slab 9, and carrier steps on lift slab 9 when carrying out unitary rotation or movement
It will not be interfered with low addendum on ground or ground.
During the raising of pallet fork 2, because the piston rod 25 of hydraulic cylinder 24 is connected by cab apron 23 with sleeve 4, piston rod
25 will upwards move with sleeve 4, and due to being provided with through hole on piston 26, the rod chamber of hydraulic cylinder 24 is the liquid medium of the upper end of piston 26
Flow regulator pieces 27 are compressed, the gap between piston 26 and flow regulator pieces 27 will be expanded to maximum, and liquid medium will be rapidly introduced into rodless cavity
It is interior.
Goods, which is reached, needs unloading behind appointed place, to ensure goods steady fall, the decrease speed of pallet fork 2 also needs to control
System.Apply down force to stepping on drop plate 20, its end face touches support bar I 18, support bar I 18 is overcome it with support bar II 22
Dead-centre position, after its coUinear state is destroyed, can cancel to stepping on the active force on drop plate 20.Make in goods and vehicle frame self gravitation
Under, pallet fork 2 will be begun to decline, and top plate 5 declines with moving sleeve 4, and active force is transferred to piston rod by sleeve 4 by cab apron 23
25, piston 26 will compress flow regulator pieces 27, and gap between the two will reduce, and liquid medium flows into the resistance of rodless cavity from rod chamber
Increase, flow rate of liquid be will be controlled, and the speed that pallet fork 2 and goods decline also is controlled, it is sufficient to ensure that goods steadily declines.
During pallet fork 2 declines, reel cage 17 and link assembly collective effect decline wheel carrier on fork wheel 1, the front end of pallet fork 2
Reduction；Support bar II 22 will be while constantly moving downward under sleeve 4 is acted on, and support bar I 18 is with support bar II 22 also by edge
Its each run-on point rotated backward, support bar III 11 will also drive the counter motion of side link II 22, and pallet fork 2 minimizes position
When, stepping on liter device will also be completed to reset, and a high position will be risen to by stepping on lift slab 9, be that next working cycles are prepared.
The manual transport trolley of the present invention can fast lifting, secure ratcs, slow to decline, Cai Sheng mechanisms make use of lever
Principle, the active force that can apply operating personnel to parallel-crank mechanism amplifies several times and easily lifts goods.The present invention
The requirement on machining accuracy of the hydraulic cylinder in existing hydraulic forklift technology is reduced in carrier, carrier car is reduced and is produced into
This.
Finally illustrate that the manual transport trolley that above example is referred to is not limited to this case and provides diagram.Ability
Domain it is to be appreciated by one skilled in the art that can be modified to technical scheme or equivalent substitution, without departing from
The objective and scope of technical solution of the present invention, it all should cover among scope of the presently claimed invention.
Claims (6)
1. a kind of manual transport trolley, including handle, vehicle frame, wherein handle are made up of handrail and vertical rod, vehicle frame by bull wheel, fork wheel,
Pallet fork, foreboard, top plate and fulcrum bearing composition, fulcrum bearing and foreboard both sides connect reel cage respectively, the reel cage and the company of pallet fork lower end
Bar assembly is connected, and link assembly is connected to prop up pallet fork front end with fork wheel, it is characterised in that：The carrier also includes stepping on liter
Device, this is stepped on liter device and is mainly made up of a set of linkage, and the linkage can be analyzed to a parallelogram connection-rod machine
Structure and two grades of bar groups, wherein parallelogram linkage comprising step on lift slab, with the affixed inner support of the fulcrum bearing and
Support arm, the side link I and side link II being connected respectively with revolute pair with stepping on lift slab and support arm；Include to turn in two grades of bar groups
Support bar I, support bar II and the support bar III of dynamic secondary connection and the sleeve that prismatic pair is formed with the vertical rod, support bar I and branch
Bearing is connected with revolute pair, and support bar II is connected with sleeve with revolute pair, and support bar III is connected with side link II with revolute pair；Institute
State sleeve and the top plate is affixed.
2. manual transport trolley according to claim 1, it is characterised in that：It is additionally provided with the fulcrum bearing for the support
Have on the spacing limiting plate of bar I, the limiting plate and step on drop plate with what revolute pair was connected, step on drop plate have can touch branch when it is rotated
The end face of strut I.
3. manual transport trolley according to claim 1, it is characterised in that：Hydraulic cylinder is additionally provided with the fulcrum bearing, the liquid
The piston rod of cylinder pressure symmetrically opens up at least two through holes, piston divides into flow regulator pieces by cab apron and the sleeve connection on piston,
Gap is provided between piston and flow regulator pieces, the projection area of a circle of flow regulator pieces is less than piston and projects the area of a circle but can cover on piston
Through hole.
4. manual transport trolley according to claim 1, it is characterised in that：The vertical rod passes through fulcrum bearing, and passes outside section
Equipped with bushing, thrust bearing is set between the bushing and fulcrum bearing, vertical rod passes the rotating shaft for being set on section and bushing and installing bull wheel.
5. manual transport trolley according to claim 1, it is characterised in that：The support bar III and support bar I, support bar II
One end of connection is provided with elongated hole along the rod member direction, support bar III is turned with support bar I, the connected mode of support bar II by revolute pair
It is changed into sliding pin pair.
6. manual transport trolley according to claim 5, it is characterised in that：Set between the support bar III and the support arm
Spring.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105110253A CN105110253A (en) | 2015-12-02 |
| CN105110253B true CN105110253B (en) | 2017-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510438827.5A Active CN105110253B (en) | 2015-07-24 | 2015-07-24 | A kind of manual transport trolley |
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| Country | Link |
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| CN (1) | CN105110253B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108217114B (en) * | 2018-02-27 | 2023-12-08 | 河北超靓工贸有限公司 | Plate loading and unloading 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 |
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| Publication number | Publication date |
|---|---|
| CN105110253A (en) | 2015-12-02 |
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