CN204237522U - A kind of hydraulic circuit realizing fork of forklift truck synchronization action - Google Patents
A kind of hydraulic circuit realizing fork of forklift truck synchronization action Download PDFInfo
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- CN204237522U CN204237522U CN201420635476.8U CN201420635476U CN204237522U CN 204237522 U CN204237522 U CN 204237522U CN 201420635476 U CN201420635476 U CN 201420635476U CN 204237522 U CN204237522 U CN 204237522U
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Abstract
The utility model discloses a kind of hydraulic circuit realizing fork of forklift truck synchronization action, comprise left and right two piston cylinders, each piston cylinder has a loculus and a large chamber, 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.The utility model is simple and compact for structure, is easy to the synchronization action realizing pallet fork.
Description
Technical field
The utility model 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.
Utility model content
The utility model is for above-mentioned technical matters, and 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 utility model solves the technical scheme that its technical matters adopts:
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 beneficial effects of the utility model are: the utility model 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 utility model 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 utility model;
Fig. 2 is valve block structure schematic diagram described in the utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail.
With reference to Fig. 1, a kind of hydraulic circuit realizing fork of forklift truck synchronization action described in the utility model, 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 utility model 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 utility model, 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 utility model, 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 utility model, but the utility model is not limited to above-described embodiment, as long as it reaches technique effect of the present utility model with any same or similar means, all should fall within protection domain of the present utility model.
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 |
|---|---|---|---|
| CN201420635476.8U CN204237522U (en) | 2014-10-28 | 2014-10-28 | A kind of hydraulic circuit realizing fork of forklift truck synchronization action |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420635476.8U CN204237522U (en) | 2014-10-28 | 2014-10-28 | A kind of hydraulic circuit realizing fork of forklift truck synchronization action |
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| Publication Number | Publication Date |
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| CN204237522U true CN204237522U (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420635476.8U Active CN204237522U (en) | 2014-10-28 | 2014-10-28 | A kind of hydraulic circuit realizing fork of forklift truck synchronization action |
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| CN (1) | CN204237522U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326409A (en) * | 2014-10-28 | 2015-02-04 | 牛力机械制造有限公司 | Hydraulic oil way capable of implementing synchronous action of forklift and pallet fork |
| CN105402177A (en) * | 2015-12-25 | 2016-03-16 | 徐州重型机械有限公司 | Execution mechanism regulating device and engineering machinery |
| CN106865244A (en) * | 2017-03-13 | 2017-06-20 | 电子科技大学中山学院 | A kind of quick Jia Bao mechanisms of piler and its method of work |
-
2014
- 2014-10-28 CN CN201420635476.8U patent/CN204237522U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326409A (en) * | 2014-10-28 | 2015-02-04 | 牛力机械制造有限公司 | Hydraulic oil way capable of implementing synchronous action of forklift and pallet fork |
| CN105402177A (en) * | 2015-12-25 | 2016-03-16 | 徐州重型机械有限公司 | Execution mechanism regulating device and engineering machinery |
| CN106865244A (en) * | 2017-03-13 | 2017-06-20 | 电子科技大学中山学院 | A kind of quick Jia Bao mechanisms of piler and its method of work |
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