CN207347094U - A kind of synchronous adjusting mechanism of forklift door frame - Google Patents
A kind of synchronous adjusting mechanism of forklift door frame Download PDFInfo
- Publication number
- CN207347094U CN207347094U CN201721056211.2U CN201721056211U CN207347094U CN 207347094 U CN207347094 U CN 207347094U CN 201721056211 U CN201721056211 U CN 201721056211U CN 207347094 U CN207347094 U CN 207347094U
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- CN
- China
- Prior art keywords
- door frame
- cylinder
- piston
- cushion collar
- oil
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of synchronous adjusting mechanism of forklift door frame, including the oil cylinder being symmetrically installed on door frame two side columns, and the oil cylinder includes cylinder bottom, cylinder cap, and the piston rod to link into an integrated entity with piston, the cylinder cap are embedded cylinder caps；The sidepiece of the piston rod is connected by fastening bolt with the door frame bearing being installed on door frame；The cylinder bottom is equipped with the buffer gear that shuts off, the buffer gear that shuts off includes being fixed on the bumper post at cylinder bottom center, the periphery of the bumper post is arranged with cushion collar, and for the cushion collar in the inner cavity of piston, the top oil port of the piston at the top of cushion collar is equipped with floating catch.The present apparatus improves production efficiency and oil cylinder reliability, avoids causing seal to damage oil leakage phenomenon because rotating cylinder cap, reduces the trouble point of forklift door frame, improves forklift truck products quality.The present apparatus is shut off buffer gear in the increased decline of cylinder bottom, is eliminated oil cylinder and is declined impact noise and vibration, improves forklift door frame operation comfort.
Description
Technical field
The utility model belongs to fork truck technical field, and in particular to a kind of synchronous adjusting mechanism of forklift door frame.
Background technology
Forklift door frame generally will be responsible for driving the oil of cargo lifting using wide visual field portal-framed structure form, the door frame of the type
Cylinder is designed to two oil cylinders, is arranged in the left and right sides of door frame, the centre position of door frame can thus be available, make
The driver operation visual field is unobstructed.
The inner upright mounting with electrical forklift is risen two oil cylinders at the same time, so as to drive cargo to rise.In order to ensure that cargo exists
The stability and security of high level, must be requested that two cylinder movement synchronizations, and stroke is consistent so that oil cylinder in place when it is interior
Crooked phenomenon cannot occur in door frame and cargo.Likewise, synchronization is also needed when cargo is fallen into place, it is ensured that cargo steadily lands.
In order to reach above-mentioned requirements, two oil cylinders must move up and down synchronization, in view of the accuracy of manufacture of door frame and oil cylinder, group
Oil cylinder on door frame suffers from the influence of the door frame accuracy of manufacture and oil cylinder itself accuracy of manufacture, and asynchrony phenomenon is generally deposited
, therefore door frame must be provided with oil cylinder synchronous adjusting mechanism in design.
Existing forklift door frame is after left and right oil cylinder is fallen into place, observes two oil cylinders when carrying out lower synchronous adjustment
Synchronism, the fastening bolt between the piston rod and door frame bearing of the oil cylinder by after in place is pulled down, in door frame bearing and piston
Increase adjust pad between bar, the quantity of gasket is increased and decreased as requested, then is installed fastening bolt and screwed；Observation is left again
The synchronism of right oil cylinder, increases and decreases the quantity of adjust pad according to synchronous situation, until left and right oil cylinder falls into place and fully synchronized is
Only.
It is the synchronism that two oil cylinders are observed after left and right oil cylinder is risen in place during upper synchronous adjustment, after rotation in place
The evolute cylinder cap of oil cylinder, makes the stroke of the oil cylinder increase, so as to reach the effect that left and right oil cylinder rises to bit synchronization, repeatedly transports
Dynamic oil cylinder, observes the synchronism of left and right oil cylinder, the rotating distance of evolute cylinder cap is adjusted according to synchronous situation, until left and right oil cylinder
Rise it is fully synchronized in place untill.
Above-mentioned synchronization adjustment method is bothersome laborious, and work efficiency is low, and labor intensity is big, while rotary oil cylinder cylinder cap is easily led
The dislocation of cylinder cap inner seal ring or damage are caused, causes new leakage point.
Utility model content
The purpose of this utility model is to provide a kind of synchronous adjusting mechanism of forklift door frame, reduces labor strength, carries
While high efficiency, the trouble point of forklift door frame is reduced.
A kind of synchronous adjusting mechanism of forklift door frame, including the oil cylinder being symmetrically installed on door frame two side columns, the oil cylinder
Including cylinder bottom, cylinder cap, and the piston rod to link into an integrated entity with piston, the cylinder cap are embedded cylinder caps；The piston rod
Sidepiece is connected by fastening bolt with the door frame bearing being installed on door frame；The cylinder bottom, which is equipped with, to shut off buffer gear, described section
Stream buffer gear includes being fixed on the bumper post at cylinder bottom center, and the periphery of the bumper post is arranged with cushion collar, the buffering
It is embedded in the inner cavity of piston, the top oil port of the piston at the top of cushion collar is equipped with floating catch.
Further scheme, is installed with steel wire clip on the internal chamber wall of the piston of cushion collar bottom, prevent cushion collar from
Come off in the inner cavity of piston.
Further scheme, the top hydraulic fluid port of the piston are connected with check valve.
Further scheme, gap is left between the bumper post and cushion collar.
Further scheme, step surface is offered on the apical lateral wall of the piston rod, and the step surface is equipped with adjustment
Gasket；The end bottom of the door frame bearing is against the adjust pad being located on step surface, then by fastening bolt by itself and work
Stopper rod connects.
In order to simplify door frame or so oil cylinder synchronization adjustment method, the utility model improves the structure of oil cylinder, by evolute
Cylinder cap makes embedded cylinder cap into, and the embedded cylinder cap evolute cylinder cap that compares has and occupies little space, and seals relatively reliable excellent
Point.Need certain screw-down torque to be screwed on oil cylinder in addition, embedded cylinder cap is assembled to, locking effect played to cylinder cap,
Once thus after the completion of hydraulic cylinder assembly assembling, do not allow to adjust left and right oil cylinder synchronization by rotating cylinder cap again.
Adjust pad is equipped with step surface on the apical lateral wall of piston rod, by increasing or decreasing adjust pad
Quantity, so as to reach the height for adjusting the oil cylinder top, realizes the effect of rising synchronous.
Meanwhile the connecting mode of piston rod and door frame bearing is changed, fastening bolt is changed by original installation up and down
Installed for side, such a improvement, makes Bolt dismantling more convenient, effectively mitigates during worker checks door frame synchronization repeatedly
Labor intensity.
The present apparatus is shut off buffer gear in the increased decline of cylinder bottom, is eliminated oil cylinder and is declined impact noise and vibration, improves fork
Car door frame operation comfort, declines the setting for the buffer gear that shuts off so that door frame, which declines, to be synchronously not required to adjust, and it is same to eliminate decline
The process of successive step.
Said mechanism reduces labor strength, while improving production efficiency, improves the reliability of oil cylinder, avoid because
Rotate cylinder cap and cause seal to damage oil leakage phenomenon, reduce the trouble point of forklift door frame, improve forklift truck products quality.
Brief description of the drawings
Fig. 1 is the oil cylinder and door frame bearing connection diagram of the utility model；
Fig. 2 is piston and buffer gear the first relation schematic diagram of shutting off in the utility model；
Fig. 3 is piston and second of relation schematic diagram of buffer gear of shutting off in the utility model；
In figure：The embedded cylinder cap of 1- cylinder barrels, 2-, 3- piston rods, 4- adjust pads, 5- fastening bolts, 6- door frame bearings,
7- cylinder bottoms, 8- bumper posts, 9- cushion collars, 10- floatings catch, 11- pistons, 12- steel wires clip, 13-U types sealing ring, 14- are mono-
To valve, 15- cylinder upper cavity oils, 16- oil cylinder cavity of resorptions, 17- cylinder bottom passages.
Embodiment
As shown in Figs. 1-3, a kind of synchronous adjusting mechanism of forklift door frame, including the oil being symmetrically installed on door frame two side columns
Cylinder, the oil cylinder includes cylinder bottom 7, cylinder cap, and the piston rod 3 to link into an integrated entity with piston 11, the cylinder cap are embedded cylinders
Lid 2；The sidepiece of the piston rod 3 is connected by fastening bolt 5 with the door frame bearing 6 being installed on door frame；The cylinder bottom 7 is equipped with
Shut off buffer gear, and the buffer gear that shuts off includes being fixed on the bumper post 8 at 7 center of cylinder bottom, the periphery of the bumper post 8
Cushion collar 9 is arranged with, the cushion collar 9 is in the inner cavity of piston 11, positioned at the top hydraulic fluid port of the piston 11 at the top of cushion collar 9
Place is equipped with floating catch 10.
Further scheme, is installed with steel wire clip 12 on the internal chamber wall of the piston 11 of 9 bottom of cushion collar, prevents from buffering
Set 9 comes off from the inner cavity of piston 11.
Further scheme, the top hydraulic fluid port of the piston 11 are connected with check valve 14.
Further scheme, step surface is offered on the apical lateral wall of the piston rod 3, and the step surface is equipped with adjustment
Gasket 4；The end bottom of the door frame bearing 6 is against the adjust pad 4 being located on step surface, then by fastening bolt 5 by its
It is connected with piston rod 3.
Further scheme, gap delta is left between the bumper post 8 and cushion collar 9.
Cylinder bottom 7 is welded into one with cylinder barrel 1, and piston rod 3 is welded into one with piston 11, and piston rod 3 is in cylinder barrel 1
Move up and down, wherein piston rod 3 is connected with door frame bearing 6 by fastening bolt 5, in piston rod 3 moves up and down, and can drive
Door frame or even cargo move up and down.
U-shaped sealing ring 13 is equipped between piston 11 and cylinder barrel 1, it is oil cylinder cavity of resorption 16 of the sealing positioned at 11 lower end of piston
In hydraulic oil, separated the hydraulic oil of oil cylinder upper and lower cavity, so as to ensure that hydraulic oil can provide enough active force lift piston rods 3
And piston 11, drive inner upright mounting and freight lifting.Effect positioned at the check valve 14 of the top hydraulic fluid port of piston 11 is blocked under oil cylinder
Hydraulic oil in chamber 16 enters cylinder upper cavity oil 15, but produces failure in oil cylinder and the hydraulic oil of oil cylinder cavity of resorption 16 is entered oil cylinder
After epicoele 15, oil cylinder cavity of resorption 16 can be discharged to by this check valve 14, fuel tank is flowed back to by cylinder bottom passage 17, is prevented in oil cylinder
Each parts in portion are damaged.
1st, cylinder upper end is adjusted in synchronism
Adjust pad 4 is equipped with step surface on the apical lateral wall of piston rod 3, by increasing or decreasing adjust pad
4 quantity, so as to reach the height for adjusting the oil cylinder top, realizes the effect of rising synchronous.When adjusting door frame rising synchronous,
Lift oil tank first, inner upright mounting is risen in place, the synchronism of observation door frame or so, the fastening bolt on oil cylinder by after in place
5 pull down, and piston rod 3 is spun off from door frame bearing 6, increase several adjust pads at the step surface on 3 top of piston rod
4, then the end bottom of door frame bearing 6 is against in the adjust pad 4 being located on step surface, then by fastening bolt 5 by its
It is connected with piston rod 3.Then raising door frame again, observes the left and right synchronism after door frame raising, is increased and decreased according to result and adjusted again
The quantity of whole gasket 4, until left and right, oil cylinder rises to bit synchronization, door frame occur without it is crooked untill.
2nd, oil cylinder lower end is adjusted in synchronism
The buffer gear that shuts off is added in the cylinder bottom 7 of oil cylinder, which can be such that oil cylinder piston drops to apart from oil cylinder bottom
Start at 50mm reduce decrease speed, slowly close to cylinder bottom 7, this mechanism can eliminate piston 11 hit cylinder bottom 7 caused by vibration and
Sound, while the asynchronism that two oil cylinders of left and right are fallen into place can be also eliminated, thus possess the left and right oil cylinder of such mechanism not
Decline synchronism need to be adjusted again.
Piston 11 declines under the action of cargo gravity, and during close to cushion collar 9, then the buffer gear that shuts off starts to act on, quilt
The hydraulic oil being enclosed between piston 11 and cylinder bottom 7 produces upward pressure, jacks up cushion collar 9, and cushion collar 9 is driven on floating catch 10
Rise so that the top hydraulic fluid port of 10 clamping piston 11 of floating catch and seal oil circuit, then cushion collar 9 falls, hydraulic oil be only capable of from
Gap between cushion collar 9 and bumper post 8 is flowed back to, and is shut off by gap, so as to reach buffering effect, piston 11 is slowly declined
To cylinder bottom 7, impact force caused by cargo declines is eliminated, while two oil cylinders can be mutually adjusted in buffering course medium velocity, so that
Reach the effect synchronously landed.
Gap size between cushion collar 9 and bumper post 8 determines buffering effect, selects rational gap just to can guarantee that and obtains
The buffering effect obtained well will not cause back pressure excessive at the same time, and method acquisition can be combined by theoretical calculation and testing and verification.
Gap computational methods are as follows：
Minimal buffering pressure first according to needed for calculating law of conservation of energyThen cushion collar is calculated
Maximum buffer gap between bumper postAnd the value range 0 of actual buffer gap δ<δ <δmax：
Finally according to actual compensator or trimmer pressureAnd 25MPa<P<40MPa, is to buffer to calculate buffer gap δ
Gap size between column and cushion collar.Illustrate that gap at this time is more reasonable, buffering effect can be played and so that delayed
Stamping press is excessive, causes crushing inside oil cylinder excessive, high oil temperature, the consequence of inner components damage.
In formula：P is actual compensator or trimmer pressure, and p is minimal buffering pressure,D is internal diameter of cylinder (mm), and d1 is cylinder
Bottom valve set diameter (mm), h are cylinder bottom valve pocket height (mm), and v is piston rod decrease speed, unit mm/s, m are cargo mass
(kg), g is acceleration of gravity (g=9.8N/kg), and U is hydraulic oil power viscosity (pa*s).
It should be noted that：Above-mentioned computational methods are only buffer gap and provide a teachings, according to theory
Calculating also needs unloaded, the fully loaded repetition test for carrying out oil cylinder, according to result of the test 0<δ<δmaxIn the range of choose it is the most suitable
Buffer gap, this product has obtained rational buffer gap at present, and by every production-type test, is widely used to this
On the product of company.
Claims (5)
1. a kind of synchronous adjusting mechanism of forklift door frame, including the oil cylinder being symmetrically installed on door frame two side columns, the oil cylinder bag
Include cylinder bottom（7）, cylinder cap, and and piston（11）The piston rod to link into an integrated entity（3）, it is characterised in that：The cylinder cap is embedded
Formula cylinder cap（2）；The piston rod（3）Sidepiece pass through fastening bolt（5）With the door frame bearing being installed on door frame（6）Connection；
The cylinder bottom（7）Equipped with the buffer gear that shuts off, the buffer gear that shuts off includes being fixed on cylinder bottom（7）Bumper post at center
（8）, the bumper post（8）Periphery be arranged with cushion collar（9）, the cushion collar（9）Embedded in piston（11）Inner cavity in, be located at
Cushion collar（9）The piston at top（11）Top oil port be equipped with floating catch（10）.
A kind of 2. synchronous adjusting mechanism of forklift door frame according to claim 1, it is characterised in that：Positioned at cushion collar（9）
The piston of bottom（11）Internal chamber wall on be installed with steel wire clip（12）, prevent cushion collar（9）From piston（11）Inner cavity in take off
Fall.
A kind of 3. synchronous adjusting mechanism of forklift door frame according to claim 1, it is characterised in that：The piston（11）'s
Top hydraulic fluid port is connected with check valve（14）.
A kind of 4. synchronous adjusting mechanism of forklift door frame according to claim 1, it is characterised in that：The bumper post（8）
And cushion collar（9）Between leave gap（δ）.
A kind of 5. synchronous adjusting mechanism of forklift door frame according to claim 1, it is characterised in that：The piston rod（3）
Apical lateral wall on offer step surface, the step surface is equipped with adjust pad（4）；The door frame bearing（6）End
Bottom is against the adjust pad being located on step surface（4）, then pass through fastening bolt（5）By itself and piston rod（3）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721056211.2U CN207347094U (en) | 2017-08-22 | 2017-08-22 | A kind of synchronous adjusting mechanism of forklift door frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721056211.2U CN207347094U (en) | 2017-08-22 | 2017-08-22 | A kind of synchronous adjusting mechanism of forklift door frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207347094U true CN207347094U (en) | 2018-05-11 |
Family
ID=62412845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721056211.2U Withdrawn - After Issue CN207347094U (en) | 2017-08-22 | 2017-08-22 | A kind of synchronous adjusting mechanism of forklift door frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207347094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107352471A (en) * | 2017-08-22 | 2017-11-17 | 安徽合力股份有限公司 | The synchronous adjusting mechanism and adjusting method of a kind of forklift door frame |
-
2017
- 2017-08-22 CN CN201721056211.2U patent/CN207347094U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107352471A (en) * | 2017-08-22 | 2017-11-17 | 安徽合力股份有限公司 | The synchronous adjusting mechanism and adjusting method of a kind of forklift door frame |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180511 Effective date of abandoning: 20230804 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180511 Effective date of abandoning: 20230804 |