CN104326409A - Hydraulic oil way capable of implementing synchronous action of forklift and pallet fork - Google Patents
Hydraulic oil way capable of implementing synchronous action of forklift and pallet fork Download PDFInfo
- Publication number
- CN104326409A CN104326409A CN201410593830.XA CN201410593830A CN104326409A CN 104326409 A CN104326409 A CN 104326409A CN 201410593830 A CN201410593830 A CN 201410593830A CN 104326409 A CN104326409 A CN 104326409A
- Authority
- CN
- China
- Prior art keywords
- line
- way
- oil circuit
- oil
- check valve
- 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
Links
- 230000001360 synchronised effect Effects 0.000 title abstract description 4
- 239000010720 hydraulic oil Substances 0.000 title abstract 4
- 239000003921 oil Substances 0.000 abstract 12
- 239000012530 fluid Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
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
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
-
- 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
- B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
- B66F9/142—Movements of forks either individually or relative to each other
- B66F9/143—Movements of forks relative to each other - symmetric
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses a hydraulic oil way capable of implementing the synchronous action of a forklift and a pallet fork. The hydraulic oil way comprises left and right piston cylinders; each piston cylinder is provided with a small cavity and a big cavity; the small cavities of the left and right piston cylinders are connected to a first one-way valve together by a first oil way; the other end of the first one-way valve is connected with a first oil inlet way; the big cavities of the left and right piston cylinders are connected to a second one-way valve and a third one-way valve respectively by second and third oil ways; the other ends of the second and third oil ways are connected with a second oil inlet way together; the first one-way valve is communicated with the second oil inlet way by a first pilot oil way; the second and third one-way valves are communicated by a second pilot oil way; the second pilot oil way is communicated with the first oil inlet way; the first oil inlet way and the second oil inlet way are connected to a multi-way valve. The hydraulic oil way has a simple and compact structure and can easily implement the synchronous action of the pallet fork.
Description
Technical field
The present invention relates to fork truck, specifically a kind of hydraulic circuit realizing fork of forklift truck synchronization action.
Background technology
Fork truck is industrial transportation vehicle, in logistics carrying, plays the part of more and more important role.Its gauge size of the shelf of bearing product disunity, this change can be adapted to for making pallet fork, just require that the distance between two pallet forks can adjust, manpower manual is relied on to pull pallet fork to reach the mode of roll adjustment for solving in conventional art, contriver has invented a kind of fork of forklift truck pitch adjusting structure assembly, and applied for patent (patent No. is 21201320529923.7), by arranging the pallet fork erecting frame that can be mounted opposite frame and laterally slide, pallet fork erecting frame promotes pallet fork crosswise movement by positioning plate, realize the equilibrium of oil cylinder to pallet fork application force, reach the object of the synchronous roll adjustment of two pallet forks, but the piston cylinder synchronization action how realizing promotion two fork operation accurately need to improve further and optimize.
Summary of the invention
The present invention is directed to above-mentioned technical matters, provide a kind of hydraulic circuit realizing fork of forklift truck synchronization action, it is simple and compact for structure, is easy to the synchronization action realizing pallet fork.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of hydraulic circuit realizing fork of forklift truck synchronization action, comprise left and right two piston cylinders, piston rod correspondence in each piston cylinder connects a pallet fork, piston cylinder is separated into two chambeies by the piston in piston cylinder, wherein piston rod side is loculus, another is large chamber, and the loculus of described left and right piston cylinder is connected to the first check valve jointly by the first oil circuit, and the other end of the first check valve connects the first in-line; The large chamber of described left and right piston cylinder is connected to the second check valve and the 3rd check valve each via second and third oil circuit, and the other end of second and third check valve described connects the second in-line jointly; Described first check valve is communicated with the second in-line by first guide's oil circuit, and second and third check valve described is communicated with by second guide's oil circuit, and this second guide oil circuit is communicated with the first in-line, and described first in-line and the second in-line are connected to multiway valve.
As the improvement of technique scheme, described second oil circuit is connected with the 3rd in-line, 3rd in-line is communicated with this second oil circuit, described 3rd oil circuit leads to the 4th in-line, 4th in-line is communicated with the 3rd oil circuit described in this, and described 3rd in-line and the 4th in-line are connected to described multiway valve.
As the further improvement of technique scheme, in described multiway valve, be provided with safety valve.
The invention has the beneficial effects as follows: the present invention adopting said structure, when the first in-line oil-feed, fluid in first in-line opens the first check valve, fluid by the first oil circuit enter into left and right piston cylinder loculus and promote piston rod mutually away from, second and third check valve is opened by second guide's oil circuit simultaneously, fluid in the large chamber of left and right piston cylinder is refluxed through the second in-line by second and third check valve, realizes two pallet fork spacing and reduces and holding function; When the second in-line oil-feed, fluid in second in-line opens second and third check valve, fluid enters into the large chamber of left and right piston cylinder respectively by second and third oil circuit and to promote piston rod close to each other, first check valve is opened by first guide's oil circuit simultaneously, fluid in left and right piston cylinder loculus is refluxed through the first in-line by the first check valve, realizes two pallet fork spacing and increases and release function.The present invention is simple and reasonable compact, and implementation cost is low, and just achieve the synchronization action of the piston rod of connection two pallet fork easily, this hydraulic circuit can be widely used on various fork truck.
Accompanying drawing explanation
Fig. 1 is hydraulic circuit schematic diagram of the present invention;
Fig. 2 is valve block structure schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further detailed explanation.
With reference to Fig. 1, a kind of hydraulic circuit realizing fork of forklift truck synchronization action of the present invention, comprise left piston cylinder 1 and right piston cylinder 2, piston rod 3 correspondence in each piston cylinder connects a pallet fork, piston cylinder is separated into two chambeies by the piston in piston cylinder, and wherein piston rod 3 side is loculus 4, and another is large chamber 5, the other end that the loculus 4 of described left and right piston cylinder 1,2 is connected to the first check valve 7, first check valve 7 jointly by the first oil circuit 6 connects the first in-line 8; The large chamber 5 of described left and right piston cylinder 1,2 is connected to the second check valve 11 and the 3rd check valve 12 each via second and third oil circuit 9,10, and the other end of second and third check valve 11,12 described connects the second in-line 13 jointly; Described first check valve 7 is communicated with the second in-line 13 by first guide's oil circuit 14, second and third check valve 11,12 described is communicated with by second guide's oil circuit 15, this the second guide oil circuit 15 is communicated with the first in-line 8, and described first in-line 8 and the second in-line 13 are connected to multiway valve (not illustrating).
When the first in-line 8 oil-feed, fluid in first in-line 8 opens the first check valve 7, fluid by the first oil circuit 6 enter into left and right piston cylinder 1,2 loculus 4 and promote piston rod 3 mutually away from, second and third check valve 11,12 is opened by second guide's oil circuit 15 simultaneously, fluid in the large chamber 5 of left and right piston cylinder 1,2 is refluxed through the second in-line 13 by second and third check valve 11,12, realizes two pallet fork spacing and reduces and holding function;
When the second in-line 13 oil-feed, fluid in second in-line 13 opens second and third check valve 11,12, fluid enters into the large chamber 5 of left and right piston cylinder 1,2 respectively by second and third oil circuit 9,10 and to promote piston rod 3 close to each other, first check valve 7 is opened by first guide's oil circuit 14 simultaneously, fluid in the loculus 4 of left and right piston cylinder 1,2 is refluxed through the first in-line 8 by the first check valve 7, realizes two pallet fork spacing and increases and release function.
When the first in-line 8 and the second in-line 13 do not work, the oil in two loculuses 4 is by choke-out, and pallet fork is in fixed range state.
Said structure advantages of simple of the present invention is compact, and implementation cost is low, and just achieve the synchronization action of the piston rod of connection two pallet fork easily, this hydraulic circuit can be widely used on various fork truck.
As preferably of the present invention, described second oil circuit 9 is connected with the 3rd in-line 16,3rd in-line 16 is communicated with this second oil circuit 9, described 3rd oil circuit 10 leads to the 4th in-line 17,4th in-line 17 is communicated with the 3rd oil circuit 10 described in this, and described 3rd in-line 16 and the 4th in-line 17 are connected to described multiway valve.When the 3rd in-line 16 oil-feed, now the second check valve 11 is not opened, oil enters into the large chamber 5 of left piston cylinder 1 and the piston rod 3 promoting left piston cylinder 1 moves to right, fluid in the loculus 4 of now left piston cylinder 1 enters into the loculus 4 of right piston cylinder 2 and the piston rod 3 promoting right piston cylinder 2 synchronously moves to right through the first oil circuit 6, fluid in the large chamber 5 of right piston cylinder 2 refluxes through the 3rd oil circuit 10 and the 4th in-line 17, thus achieves two pallet forks and synchronously move to right; In like manner, when the 4th in-line 17 oil-feed, two pallet forks can be realized and synchronously move to left.
In the present invention, preferably, safety valve (not illustrating) is provided with in described multiway valve, when piston rod 3 reaches the limit, namely two pallet forks are tuned to this state of ultimate range and can not sidesways, if sidesway, cause system pressure to raise, the safety valve in forklift multi-way valve is opened thus is ensured security of system.
Above-mentioned hydraulic circuit accessible site is on a valve block 18, as shown in Figure 2, valve block spool aluminum is done, be arranged in fork truck balladeur train lower beam, valve block 18 is provided with 3 hydraulic control one-way valves 19 and forms the first described check valve 7, second check valve 11 and the 3rd check valve 12, valve block 18 is provided with PS, PJ, PZ, PY oil circuit joint and is respectively used to connect the second in-line 13, first in-line 8, the 4th in-line 17 and the 3rd in-line 16.
The above, just better embodiment of the present invention, but the present invention is not limited to above-described embodiment, as long as it reaches technique effect of the present invention with any same or similar means, all should fall within protection scope of the present invention.
Claims (3)
1. one kind realizes the hydraulic circuit of fork of forklift truck synchronization action, comprise left and right two piston cylinders, piston rod correspondence in each piston cylinder connects a pallet fork, piston cylinder is separated into two chambeies by the piston in piston cylinder, wherein piston rod side is loculus, another is large chamber, it is characterized in that: the loculus of described left and right piston cylinder is connected to the first check valve jointly by the first oil circuit, and the other end of the first check valve connects the first in-line; The large chamber of described left and right piston cylinder is connected to the second check valve and the 3rd check valve each via second and third oil circuit, and the other end of second and third check valve described connects the second in-line jointly; Described first check valve is communicated with the second in-line by first guide's oil circuit, and second and third check valve described is communicated with by second guide's oil circuit, and this second guide oil circuit is communicated with the first in-line, and described first in-line and the second in-line are connected to multiway valve.
2. a kind of hydraulic circuit realizing fork of forklift truck synchronization action according to claim 1, it is characterized in that: described second oil circuit is connected with the 3rd in-line, 3rd in-line is communicated with this second oil circuit, described 3rd oil circuit leads to the 4th in-line, 4th in-line is communicated with the 3rd oil circuit described in this, and described 3rd in-line and the 4th in-line are connected to described multiway valve.
3. a kind of hydraulic circuit realizing fork of forklift truck synchronization action according to claim 1 and 2, is characterized in that: be provided with safety valve in described multiway valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410593830.XA CN104326409A (en) | 2014-10-28 | 2014-10-28 | Hydraulic oil way capable of implementing synchronous action of forklift and pallet fork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410593830.XA CN104326409A (en) | 2014-10-28 | 2014-10-28 | Hydraulic oil way capable of implementing synchronous action of forklift and pallet fork |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104326409A true CN104326409A (en) | 2015-02-04 |
Family
ID=52401241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410593830.XA Pending CN104326409A (en) | 2014-10-28 | 2014-10-28 | Hydraulic oil way capable of implementing synchronous action of forklift and pallet fork |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104326409A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773152A (en) * | 2015-05-07 | 2015-07-15 | 苏州紫荆清远新能源汽车技术有限公司 | Vacuum power assisting device and electric automobile |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078772A (en) * | 1992-03-30 | 1993-11-24 | S·梅耶 | Hydraulic pressure installation with synchronous jacks |
| JPH08128409A (en) * | 1994-09-08 | 1996-05-21 | Shinmeiwa Auto Eng Kk | Synchronizing device of hydraulic cylinder |
| US20070017364A1 (en) * | 2005-07-04 | 2007-01-25 | Veneziani Luciano | Hydraulic control unit for the arms of a grip and grip including said hydraulic unit |
| CN102979772A (en) * | 2012-12-10 | 2013-03-20 | 徐州重型机械有限公司 | Oil cylinder locking device, double-cylinder hydraulic control system and lifting equipment |
| CN103569882A (en) * | 2013-11-19 | 2014-02-12 | 南京工业大学 | A hydraulic jacking system for an attached tower crane |
| CN204237522U (en) * | 2014-10-28 | 2015-04-01 | 牛力机械制造有限公司 | A kind of hydraulic circuit realizing fork of forklift truck synchronization action |
-
2014
- 2014-10-28 CN CN201410593830.XA patent/CN104326409A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078772A (en) * | 1992-03-30 | 1993-11-24 | S·梅耶 | Hydraulic pressure installation with synchronous jacks |
| JPH08128409A (en) * | 1994-09-08 | 1996-05-21 | Shinmeiwa Auto Eng Kk | Synchronizing device of hydraulic cylinder |
| US20070017364A1 (en) * | 2005-07-04 | 2007-01-25 | Veneziani Luciano | Hydraulic control unit for the arms of a grip and grip including said hydraulic unit |
| CN102979772A (en) * | 2012-12-10 | 2013-03-20 | 徐州重型机械有限公司 | Oil cylinder locking device, double-cylinder hydraulic control system and lifting equipment |
| CN103569882A (en) * | 2013-11-19 | 2014-02-12 | 南京工业大学 | A hydraulic jacking system for an attached tower crane |
| CN204237522U (en) * | 2014-10-28 | 2015-04-01 | 牛力机械制造有限公司 | A kind of hydraulic circuit realizing fork of forklift truck synchronization action |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773152A (en) * | 2015-05-07 | 2015-07-15 | 苏州紫荆清远新能源汽车技术有限公司 | Vacuum power assisting device and electric automobile |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150204 |