CN108821191A - A kind of Forward fork truck leaning device and fork carriage assembly - Google Patents
A kind of Forward fork truck leaning device and fork carriage assembly Download PDFInfo
- Publication number
- CN108821191A CN108821191A CN201810630883.2A CN201810630883A CN108821191A CN 108821191 A CN108821191 A CN 108821191A CN 201810630883 A CN201810630883 A CN 201810630883A CN 108821191 A CN108821191 A CN 108821191A
- Authority
- CN
- China
- Prior art keywords
- plate
- dump ram
- ear mount
- leaning device
- front forked
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
- B66F9/16—Platforms; Forks; Other load supporting or gripping members inclinable relative to mast
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
Abstract
The invention discloses a kind of Forward fork truck leaning device and fork carriage assemblies, the Forward fork truck leaning device, including the front forked frame and rear crotch connected by two pin shafts, and dump ram, the dump ram is one, two supports are welded on the cylinder barrel of the dump ram, the end of the piston rod of the dump ram is provided with U-shaped earrings frame, the bottom plate of the front forked frame is equipped with the first ear mount, the bottom plate of the rear crotch is equipped with the second ear mount, wherein, two supports of the dump ram and the first ear mount are connected by the first pin shaft, the U-shaped earrings frame of the dump ram is connected with second ear mount by the second pin shaft.After the solution of the present invention, solve the problems, such as that conventional hydraulic oil cylinder is not suitable for substitution installation.
Description
Technical field
The present invention relates to fork truck field more particularly to a kind of Forward fork truck leaning devices and fork carriage assembly.
Background technique
Move forward fork truck leaning device, is the important component of Forward fork truck work, and Forward fork truck passes through inclination when working
The anteversion and retroversion of oil cylinder realize forking and unloading to real cargo, move forward in fork truck leaning device traditional design both at home and abroad, inclination
Rear crotch part in the fixed fork carriage of oil cylinder, when dump ram piston rod movement, contradicts the crossbeam below front forked frame, after realization
Fascinate work, and dump ram and front forked frame are separated positions, when fork is to pallet fork, by self gravitation effect, make front forked frame and
The pallet fork of installation plays the role of leaning forward.
As shown in Figure 1, fork truck leaning device is connected by front forked frame 10 ' and rear crotch 20 ' by two pin shafts 21 ' of left and right, hinge
Joint chair 11 ' is arranged on the cross tube of front forked frame 10 ', realizes when two 30 ' piston rods of dump ram are flexible and tilts forward and back fortune
It is dynamic.
Above-mentioned traditional design has two, one is due to not connected below forward and backward crotch, current descending of fork
In the process, it when front forked frame is suspended to cargo, remains stationary, during declining due to rear crotch with crotch door frame, before be easy to causeing
It tumbles before crotch, causes safety accident；Secondly connection cylinder pipe complexity manufacturing cost is higher due to using two dump rams,
The synchronisms of two dump ram simultaneous retractables it is difficult to ensure that, be easy to cause two cylinder forces uneven, oil cylinder failure rate is low.
Two dump rams are replaced according to a dump ram, the lower part of forward and backward crotch is connected, theoretically may be used
It solves the above problems, however since space is narrow, conventional hydraulic cylinder is not suitable for substitution installation here, in addition, forward and backward fork
Therefore the stress condition of frame can change, there are security risks if direct replacement installation.
Summary of the invention
The purpose of the present invention is to provide a kind of reach truck leaning devices, to solve using a dump ram substitution
Conventional hydraulic cylinder is not suitable for the problem of substitution installation when two dump rams.
The object of the invention is also to provide a kind of fork carriage assemblies.
For this purpose, one aspect of the present invention provides a kind of Forward fork truck leaning device, including the front fork connected by two pin shafts
Frame and rear crotch and dump ram, the dump ram are one, are welded with two supports on the cylinder barrel of the dump ram,
The end of the piston rod of the dump ram is provided with U-shaped earrings frame, and the bottom plate of the front forked frame is equipped with the first ear mount, described
The bottom plate of rear crotch is equipped with the second ear mount, wherein two supports of the dump ram and the first ear mount are connected by the first pin shaft
It connects, the U-shaped earrings frame of the dump ram is connected with second ear mount by the second pin shaft.
Further, the bottom plate of above-mentioned front forked frame is made of lower beam and the gusset being soldered on the inside of the lower beam, institute
It states gusset and offers locating slot in the middle position of the lower beam, the front forked frame further includes the first ear mount, first ear
Seat tool has the positioning voussoir with locating slot cooperation, first ear mount and the lower beam and gusset to weld, the rear fork
Several gussets arranged side by side of the bottom base plate of frame, the rear crotch further include the second ear being soldered on the top surface of the bottom plate
Seat.
Further, above-mentioned front forked frame further include upper beam, lower beam, left plate, right side plate, be soldered to upper beam and under
Crossbeam the first vertical plate and the second vertical plate between the two, wherein the board direction of the left plate and right side plate is perpendicular to front fork
The leading flank of frame.
Further, above-mentioned rear crotch includes bottom plate, left column plate, right column plate and connecting plate, the left column plate
With chaining plate and limited block are additionally provided on right column plate.
Further, above-mentioned front forked frame and rear crotch alternative one are equipped with steel back composite bearing, the pin shaft with it is described
The cooperation of steel back composite bearing.
Further, the lateral attitude that above-mentioned dump ram is high in rear end, front end is low, the stroke of the dump ram are only
30mm-35mm。
According to another aspect of the present invention, a kind of fork carriage assembly is provided, which is characterized in that retouched above including basis
The Forward fork truck leaning device stated further includes the gear shelf being arranged on front forked frame and two pallet forks.
In the present invention, front and back crotch assembly is passed through into an overstriking dump ram connection, dump ram forward bolt piston bar
Front forked frame is connected, rear end connects rear crotch, to realize movement.An oil cylinder only needs a piece of accessory pipeline simultaneously, well
Save manufacturing cost.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
Below with reference to figure, the present invention is described in further detail.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of the reach truck leaning device of correlation technique；
Fig. 2 is the structural schematic diagram of reach truck leaning device according to the present invention；
Fig. 3 is the schematic perspective view of the front forked frame of reach truck leaning device according to the present invention；
Fig. 4 is the schematic diagram of internal structure of the front forked frame of reach truck leaning device according to the present invention；
Fig. 5 is the schematic perspective view of the rear crotch of reach truck leaning device according to the present invention；
Fig. 6 is the schematic diagram of internal structure of the rear crotch of reach truck leaning device according to the present invention；
Fig. 7 is the structural schematic diagram of the dump ram of reach truck leaning device according to the present invention；
Fig. 8 is the side view of the dump ram of reach truck leaning device according to the present invention；
Fig. 9 is the kinematic sketch of the dump ram of reach truck leaning device according to the present invention；And
Figure 10 is the enlarged diagram of kinematic sketch shown in Fig. 9.
Description of symbols
10, front forked frame；20, rear crotch；
30, dump ram；50, pallet fork；
11, steel back composite bearing；12, upper beam；
13, lower beam；14, gusset；
15, the first ear mount；16, left plate；
17, right side plate；18, vertical plate；
21, left column plate；22, right column plate；
23, bottom plate；24, gusset；
25, the second ear mount；26, connecting plate；
31, support；32, earrings frame；
33, cylinder barrel；34, piston；
35, it is oriented to front cover；36, piston rod；
37, rear seal-cover；38, the first oil nozzle；
39, the second oil nozzle；40, shelf are kept off；
141, locating slot；151, voussoir is positioned；
211, limited block；212, chaining plate；
191, stiffener plate；311, pin shaft hole；
312, screw hole.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Fig. 2 to Fig. 8 is shown according to some embodiments of the present invention.
As shown in Fig. 2, reach truck leaning device of the invention includes front forked frame 10, rear crotch 20 and sets between two parties
The dump ram 30 set.
The front end of the piston rod of above-mentioned dump ram 30 is equipped with U-shaped earrings frame 32, sets on the top surface of the lower beam of front forked frame
There is the first ear mount 15, which is connect with the first ear mount 15 by the first pin shaft.It is welded on the cylinder barrel of above-mentioned dump ram 30
Connect two supports 31, the second ear mount 25 is welded in the top surface of the bottom plate of rear crotch 20, second ear mount 25 between two supports 31, and
It is connected by the second pin shaft.
Wherein, the lateral attitude that dump ram 30 is high in rear end, front end is low, and designed for tubbiness and ultra-short range.
In conjunction with referring to Fig. 7 and Fig. 8, the piston rod stroke L2 range of the dump ram 30 is only 30-40mm, constitutes ultrashort row
Journey design.Preferably, stroke range 30-35mm, such as 32mm, 32.5mm, 33mm, 34mm, to meet fork carriage work
Angle for example leans forward the angle α (piston rod of corresponding tilt oil cylinder bounces back to extreme position) and (work of corresponding tilt oil cylinder of the angle hypsokinesis β
Stopper rod extend out to extreme position) setting requirements.
The bar diameter D of the piston rod of the dump ram 30 is greater than the stroke L of piston rod, constitutes short and thick design.Such as piston rod
Bar diameter and the difference DELTA of stroke of piston rod be 3-5mm, the cylinder diameter of dump ram is 2.0-2.1D, nominal pressure is 17~
20MPa forms short and thick design.
The kinematic sketch of dump ram is shown in figure 9 and in figure 10, wherein and P1 indicates the corresponding hinge joint of the first pin shaft,
P2 indicates the corresponding hinge joint of the second pin shaft, and P3 indicates that front forked frame 10 and the hinge joint between the two of rear crotch 20, track S1 are
The characteristic movement trajectories of dump ram are using P1 point as center of rotation, with the perpendicular intersection of the center line of P1 to piston rod
Distance is one section of circular arc of radius, track S2 is the motion profile of P2 point, for using P3 point as center of rotation, with P2 to P3 away from
From one section of circular arc for radius.
As can be seen that passing through the above-mentioned connection type of dump ram from Fig. 9 and Figure 10, P2 point can only be limited in track S2
Movement, defines the maximal work angle of fork carriage in arc length, the maximal work angle and dump ram whether fuel feeding without
It closes, and also unrelated with the stroke of piston rod, so improves the safety of fork truck work, overcome the mistake of dump ram piston rod
Safety problem caused by imitating.
In the present invention, two supports are welded on hydraulic cylinder, compared with single support, the structure for improving dump ram is strong
Degree, improves hydraulic cylinder warping resistance ability.Preferably, one or more reinforcement is additionally provided between two supports of dump ram
Muscle.
Compared with existing double dump ram designs, front and back crotch assembly is passed through the oversquare of an overstriking by the present invention
Dump ram connection, dump ram forward bolt piston bar connect front forked frame, rear end connect rear crotch, to realize movement.Simultaneously
One oil cylinder only needs a piece of accessory pipeline, substantially saves manufacturing cost.Two mounting plates are welded in dump ram cylinder barrel lower end,
Welding ear seat is only needed on front forked frame and rear crotch, is connected by pin shaft, so that the installation of front and back crotch and cylinder barrel three
It is simple for structure, facilitate manufacture, dump ram easy for installation, market maintenance cost is low.
It the present invention also provides a kind of fork carriage assembly, including reach truck leaning device, further include gear 40 and of shelf
Two pallet forks 50.
In one embodiment, as shown in Fig. 2, front forked frame 10 and 20 alternative one of rear crotch are equipped with steel back composite bearing
11, pin shaft and steel back composite bearing 11 for connection cooperate.
In the present invention, after using the dump ram of above-mentioned mounting means, it can be used for CQD20-25 basic model door frame.
In one embodiment, as shown in Figure 3 and Figure 4, front forked frame 10 includes upper beam 12, lower beam 13, left plate 16, the right side
Side plate 17, the two pieces of vertical plates 18 welded therebetween in upper beam and lower beam, wherein the back side of lower beam 13 welds gusset
14, which is centrally located, and both ends extend to the lower position of two pieces of vertical plates 18, particularly, the left plate 16 and right side
The board direction of plate 17 is vertical with the front side surface of front forked frame 10, and bending resistance significantly improves when front forked frame tilts, and non-
It is often suitable for the installation for keeping off shelf 40.
In the present embodiment, front forked frame is using after above-mentioned construction, front forked frame it is simple for structure, the use of plate is horizontal flat perpendicular
Directly, no polymorphic structure, it is easy to manufacture, it is suitble to produce in batch.Pass through the cooperation of lower beam and gusset and making for left side plate
With having adapted to single dump ram and driven structural performance requirements to front forked frame between two parties.
Wherein, locating slot 141 is opened up on gusset 14, the side of the close lower beam of first ear mount 15 is equipped with square
Gap, and positioning voussoir 151 is formed, which is inserted into locating slot 141, realizes welding prelocalization, and under
Crossbeam 13 and gusset 14 are welded in contact position, and the thrust of dump ram is mainly accepted by lower beam.
In the front forked frame of the present embodiment, what two ramped abutments 19 were made of two pieces of otic placodes respectively, two ramped abutments lean on
The position of nearly upper beam offers square gap, and welding prelocalization is realized in the corner cooperation of the square gap and upper beam,
Two ramped abutments and upper beam and vertical plate are welded in contact site, and the downward torsion of front forked frame and weight is mainly accepted by upper beam 12
Square.
Preferably, stiffener plate 191 is welded on the inside of two ramped abutments.
In one embodiment, as shown in Figure 5 and Figure 6, rear crotch 20 include bottom plate 23, left column plate 21, right column plate 22,
Connecting plate 26 and multiple gussets 24 arranged side by side in the welding of 23 bottom of bottom plate, are additionally provided with 212 He of chaining plate on the left and right pillar plate
Limited block 211, wherein the top surface of bottom plate 23 is welded with the second ear mount 25.
Preferably, the both ends of multiple gussets arranged side by side 24 are welded with left column plate 21 and right column plate 22 respectively, and then are improved
The overall structural strength of frame.
In the present embodiment, rear crotch is using after above-mentioned construction, rear crotch it is simple for structure, the use of plate is horizontal flat perpendicular
Directly, no polymorphic structure, it is easy to manufacture, it is suitble to produce in batch.
In one embodiment, as shown in Figure 7 and Figure 8, the dump ram include cylinder barrel 33, rear seal-cover 37, piston rod 36, with
The integrally welded piston 34 of piston rod 36 and guiding front cover 35, wherein the parallel beneath of cylinder barrel 33 welds two side by side
Seat 31.The end of piston rod 36, which is spirally connected, fixes U-shaped earrings frame 32.Wherein, the central axis of the first pin shaft hole and the second pin shaft hole
Central axis X-direction distance L1 between the two be 140mm-155mm, distance L3 is 70-80mm in the Y direction.
Preferably, guiding front cover 35 is threadedly coupled in such a way that end face screws with cylinder barrel 33.Rear seal-cover 37 is using embedment
Formula design, end face is flushed with the rear end face of cylinder barrel thereafter.
In the present embodiment, oil inlet and outlet is first inserted positioned at the side of cylinder barrel 33 each other for the first oil nozzle 38 and the second oil nozzle 39
It after connecing positioning, being welded on cylinder barrel, is found in practice process, arrangement compares straight up with the oil nozzle of correlation technique,
This lateral arrangement mode facilitates arrangement pipeline.
In fork truck leaning device of the invention, the pin shaft comprising the first pin shaft and the second pin shaft is locked using spring washer
Fixed, which is stuck on pin shaft, and the other side is fastened by screw, and correspondingly, two supports 31 are equipped with pin shaft hole 311 and spiral shell
Nail hole 312.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of Forward fork truck leaning device, including passing through the front forked frame and rear crotch and dump ram that two pin shafts connect,
It is characterized in that,
The dump ram is one, is welded with two supports, the piston rod of the dump ram on the cylinder barrel of the dump ram
End be provided with U-shaped earrings frame,
The bottom plate of the front forked frame is equipped with the first ear mount, and the bottom plate of the rear crotch is equipped with the second ear mount,
Wherein, two supports of the dump ram and the first ear mount are connected by the first pin shaft, the U-shaped earrings of the dump ram
Frame is connected with second ear mount by the second pin shaft.
2. Forward fork truck leaning device according to claim 1, which is characterized in that
The bottom plate of the front forked frame is made of lower beam and the gusset being soldered on the inside of the lower beam, and the gusset is under described
The middle position of crossbeam offers locating slot, and the front forked frame further includes the first ear mount, first ear mount have with it is described fixed
The positioning voussoir of position slot cooperation, first ear mount and the lower beam and gusset are welded, the bottom base plate of the rear crotch
Several gussets arranged side by side, the rear crotch further include the second ear mount being soldered on the top surface of the bottom plate.
3. Forward fork truck leaning device according to claim 2, which is characterized in that the front forked frame further include upper beam,
Lower beam, right side plate, is soldered to the first vertical plate and the second vertical plate of upper beam and lower beam therebetween at left plate, wherein institute
State leading flank of the board direction perpendicular to front forked frame of left plate and right side plate.
4. Forward fork truck leaning device according to claim 2, which is characterized in that the rear crotch includes bottom plate, Zuo Li
Column plate, right column plate and connecting plate are additionally provided with chaining plate and limited block on the left column plate and right column plate.
5. Forward fork truck leaning device according to claim 1, which is characterized in that both the front forked frame and rear crotch it
One is equipped with steel back composite bearing, and the pin shaft and the steel back composite bearing cooperate.
6. Forward fork truck leaning device according to any one of claim 1 to 5, which is characterized in that the dump ram
The lateral attitude high in rear end, front end is low, the stroke of the dump ram is only 30mm-35mm.
7. a kind of fork carriage assembly, which is characterized in that incline including Forward fork truck according to any one of claim 1 to 6
Oblique mechanism further includes the gear shelf being arranged on front forked frame and two pallet forks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810630883.2A CN108821191A (en) | 2018-06-19 | 2018-06-19 | A kind of Forward fork truck leaning device and fork carriage assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810630883.2A CN108821191A (en) | 2018-06-19 | 2018-06-19 | A kind of Forward fork truck leaning device and fork carriage assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108821191A true CN108821191A (en) | 2018-11-16 |
Family
ID=64141698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810630883.2A Pending CN108821191A (en) | 2018-06-19 | 2018-06-19 | A kind of Forward fork truck leaning device and fork carriage assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108821191A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328499A (en) * | 2019-08-12 | 2019-10-15 | 宏源精工车轮股份有限公司 | A kind of fork truck gusset processing technology |
| CN111673302A (en) * | 2020-05-21 | 2020-09-18 | 杭州叉车门架有限公司 | Fork truck fork frame body welding production line |
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| CN110328499A (en) * | 2019-08-12 | 2019-10-15 | 宏源精工车轮股份有限公司 | A kind of fork truck gusset processing technology |
| CN111673302A (en) * | 2020-05-21 | 2020-09-18 | 杭州叉车门架有限公司 | Fork truck fork frame body welding production line |
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Application publication date: 20181116 |