CN204628136U - A kind of wheeled tractor Synchronous lifting suppresses the shunting limited valve device that buries - Google Patents
A kind of wheeled tractor Synchronous lifting suppresses the shunting limited valve device that buries Download PDFInfo
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- CN204628136U CN204628136U CN201520230255.7U CN201520230255U CN204628136U CN 204628136 U CN204628136 U CN 204628136U CN 201520230255 U CN201520230255 U CN 201520230255U CN 204628136 U CN204628136 U CN 204628136U
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Abstract
A kind of wheeled tractor Synchronous lifting suppresses the shunting limited valve device that buries, in valve body, side arranges limited valve, described valve body is cuboid, in limited valve, valve rod is set, below the oil pocket of the corresponding limited valve of valve body upper surface, filler opening is set, in valve body, the upper and lower of opposite side arranges oil discharge passage and drainback passage respectively, described oil discharge passage with above the oil pocket of limited valve between arrange and be communicated with oil duct, three oil ducts of drainback passage are mutually perpendicular to one end of oil duct; The corresponding valve rod in sidewall side of valve body arranges plectrum stationary axle, and one end activity of plectrum stationary axle arranges plectrum; The usage requirement that the hydraulic jack that buries is suppressed in large power wheel tractor Synchronous lifting and decline can be met, overall operation reliability is effectively improved.
Description
Technical field
The utility model relates to tractor manufacturing technology field, and especially a kind of wheeled tractor Synchronous lifting suppresses the shunting limited valve device that buries.
Background technique
At present, the oil cylinder that wheeled tractor external Synchronous lifting suppresses hydraulic system employing of burying is all that limited valve and oil cylinder are integrated in one, and limited valve is directly installed on above oil cylinder, and two limited valves control two oil cylinders in left and right respectively.By market survey, we find: one, can not be well synchronous by two limited valves of manual setting, and oil cylinder load imbalance causes oil cylinder to damage; Two, because most of limited valve is integrated in oil cylinder top, the dust prevention of piston rod is restricted, and suppresses the working environment very severe of oil cylinder, cause oil sealing to be subject to sandy soil and attack and premature failure.
In view of above reason, now develop a kind of wheeled tractor Synchronous lifting and suppress the shunting limited valve device that buries.
Model utility content
The purpose of this utility model is to overcome deficiency of the prior art, there is provided a kind of wheeled tractor Synchronous lifting to suppress to bury shunting limited valve device, the usage requirement that the hydraulic jack that buries is suppressed in large power wheel tractor Synchronous lifting and decline can be met, overall operation reliability is effectively improved.
The utility model to achieve these goals, adopt following technological scheme: a kind of wheeled tractor Synchronous lifting suppresses the shunting limited valve device that buries, be by: valve body, limited valve, valve rod, oil pocket, filler opening, oil outlet one, oil outlet two, be communicated with oil duct, return opening one, return opening two, return opening three, plectrum stationary axle, plectrum is formed; In valve body, side arranges limited valve, described valve body is cuboid, in limited valve, valve rod is set, below the oil pocket of the corresponding limited valve of valve body upper surface, filler opening is set, in valve body, the upper and lower of opposite side arranges oil discharge passage and drainback passage respectively, described oil discharge passage with above the oil pocket of limited valve between arrange and be communicated with oil duct, three oil ducts of drainback passage are mutually perpendicular to one end of oil duct; The corresponding valve rod in sidewall side of valve body arranges plectrum stationary axle, and one end activity of plectrum stationary axle arranges plectrum.
Described oil discharge passage is L shape, and oil outlet one and oil outlet two are separately positioned on sidewall and the upper surface of valve body.
Return opening one and the return opening two of described drainback passage are separately positioned in the both sidewalls of valve body, and return opening three is arranged on valve body upper surface.
When described plectrum does movement in a curve centered by plectrum stationary axle tie point, contact with valve rod termination in the middle part of plectrum.
The beneficial effects of the utility model are: the utility model can meet the usage requirement that the hydraulic jack that buries is suppressed in large power wheel tractor Synchronous lifting and decline, decreases the impact to tractor, overall operation reliability is effectively improved in work.
The utility model structure is simple, reliably, easy to maintenance, easy for installation, simple to operate, handle multi-way valve to when promoting position, plectrum does movement in a curve centered by plectrum stationary axle tie point, close to valve rod termination, when the piston rod Synchronous lifting of two oil cylinders is to desired location, plectrum touches valve rod action, shunting limited valve cuts out, and the piston rod Synchronous lifting of two oil cylinders stops; When handling multi-way valve to decline position, valve rod is upspring under oil pressure effect, and valve rod upwards sets back, and shunting limited valve is opened, and the piston rod of two oil cylinders synchronously recovers home position.Two oil cylinder synchronous effects are desirable, and add the working life of oil cylinder, improve the overall performance of equipment, make tractor stable, easy to adjust, easy maintenance is reliable.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1 is, general assembly structural representation;
In Fig. 1: valve body 1, limited valve 2, valve rod 3, oil pocket 4, filler opening 5, oil outlet 1, oil outlet 27, connection oil duct 8, return opening 1, return opening 2 10, return opening 3 11, plectrum stationary axle 12, plectrum 13.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
As shown in the figure, in valve body 1, side arranges limited valve 2, described valve body 1 is cuboid, valve rod 3 is set in limited valve 2, below the oil pocket 4 of the corresponding limited valve 2 of valve body 1 upper surface, filler opening 5 is set, in valve body 1, the upper and lower of opposite side arranges oil discharge passage and drainback passage respectively, described oil discharge passage with above the oil pocket 4 of limited valve 2 between arrange and be communicated with oil duct 8, three oil ducts of drainback passage are mutually perpendicular to one end of oil duct; The corresponding valve rod 3 in sidewall side of valve body 1 arranges plectrum stationary axle 12, and plectrum stationary axle 12 one end activity arranges plectrum 13.
Described oil discharge passage is L shape, and oil outlet 1 and oil outlet 27 are separately positioned on sidewall and the upper surface of valve body 1.
The return opening 1 of described drainback passage and return opening 2 10 are separately positioned in the both sidewalls of valve body 1, and return opening 3 11 is arranged on valve body 1 upper surface.
When described plectrum 13 does movement in a curve centered by plectrum stationary axle 12 tie point, contact with valve rod 3 termination in the middle part of plectrum 13.
Claims (4)
1. a wheeled tractor Synchronous lifting suppresses the shunting limited valve device that buries, be by: valve body (1), limited valve (2), valve rod (3), oil pocket (4), filler opening (5), oil outlet one (6), oil outlet two (7), be communicated with oil duct (8), return opening one (9), return opening two (10), return opening three (11), plectrum stationary axle (12), plectrum (13) is formed; It is characterized in that: valve body (1) interior side arranges limited valve (2), described valve body (1) is cuboid, valve rod (3) is set in limited valve (2), oil pocket (4) below of the corresponding limited valve (2) of valve body (1) upper surface arranges filler opening (5), the upper and lower of valve body (1) interior opposite side arranges oil discharge passage and drainback passage respectively, arrange between described oil discharge passage and oil pocket (4) top of limited valve (2) and be communicated with oil duct (8), three oil ducts of drainback passage are mutually perpendicular to one end of oil duct; The corresponding valve rod (3) in sidewall side of valve body (1) arranges plectrum stationary axle (12), and plectrum stationary axle (12) one end activity arranges plectrum (13).
2. a kind of wheeled tractor Synchronous lifting according to claim 1 suppresses the shunting limited valve device that buries, it is characterized in that: described oil discharge passage is L shape, oil outlet one (6) and oil outlet two (7) are separately positioned on sidewall and the upper surface of valve body (1).
3. a kind of wheeled tractor Synchronous lifting according to claim 1 suppresses the shunting limited valve device that buries, it is characterized in that: return opening one (9) and the return opening two (10) of described drainback passage are separately positioned in the both sidewalls of valve body (1), and return opening three (11) is arranged on valve body (1) upper surface.
4. a kind of wheeled tractor Synchronous lifting according to claim 1 suppresses the shunting limited valve device that buries, it is characterized in that: when described plectrum (13) does movement in a curve centered by plectrum stationary axle (12) tie point, plectrum (13) middle part contacts with valve rod (3) termination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520230255.7U CN204628136U (en) | 2015-04-07 | 2015-04-07 | A kind of wheeled tractor Synchronous lifting suppresses the shunting limited valve device that buries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520230255.7U CN204628136U (en) | 2015-04-07 | 2015-04-07 | A kind of wheeled tractor Synchronous lifting suppresses the shunting limited valve device that buries |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204628136U true CN204628136U (en) | 2015-09-09 |
Family
ID=54047172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520230255.7U Active CN204628136U (en) | 2015-04-07 | 2015-04-07 | A kind of wheeled tractor Synchronous lifting suppresses the shunting limited valve device that buries |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204628136U (en) |
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2015
- 2015-04-07 CN CN201520230255.7U patent/CN204628136U/en active Active
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