CN206100854U - Farm tractor hydraulic rockshaft - Google Patents
Farm tractor hydraulic rockshaft Download PDFInfo
- Publication number
- CN206100854U CN206100854U CN201621079329.2U CN201621079329U CN206100854U CN 206100854 U CN206100854 U CN 206100854U CN 201621079329 U CN201621079329 U CN 201621079329U CN 206100854 U CN206100854 U CN 206100854U
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- connecting rod
- lift arm
- housing
- valve
- piston
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Abstract
The utility model discloses a farm tractor hydraulic rockshaft, which comprises a housin, the outside of casing is connected with outer lift arm and interior lift arm through the lift shaft that the rotation was connected with, the downside of outer lift arm hinges in the left side of hydrovalve through first connecting rod, second connecting rod and third connecting rod respectively, the inner chamber of casing includes the control valve assembly, the upper end and the lower extreme of control valve assembly have hydro -cylinder and oil pump through the tube coupling respectively, check valve, relief valve and governing valve are installed to the outside of hydro -cylinder, and this farm tractor hydraulic rockshaft drives first connecting rod, second connecting rod and third connecting rod through the lift shaft and gives the support with the force feedback, guarantees that this design of safety of hydro -cylinder and hydraulic system has armed lever decline self -locking function, avoids leading to the agricultural implement to descend at the excessive speed, have safe risk, and this installation cost is low, and the potential safety hazard index is low, uses widely after being worth.
Description
Technical field
The utility model is related to hydraulic rockshaft technical field, specially a kind of farm tractor hydraulic rockshaft.
Background technology
In order to the farm implements being suspended on behind tractor are lifted or put down, hydraulic rockshaft to be installed at tractor rear portion.
Lifter is controlled the raising and lowering of farm implements by lift arm, and by hydraulic jack the motion of control lift arm, oil cylinder are moved back and forth
The direction of motion by reversal valve control.The shortcoming of this control mode is can not to realize neutral position control, or farm implements are carried
Extreme higher position is raised to, or farm implements drop to extreme lower position, it is impossible to make farm implements stop going up at an arbitrary position.It is in Authorization Notice No.
A kind of scheme of lifter is disclosed in the Chinese utility model patent specification of CN202998796 U.The lifter includes shell
Body, is rotatably equipped with by interior, the lifting connecting lever that outer lift arm is constituted on housing.Hydraulic cylinder is provided with housing, there is work in hydraulic cylinder
Plug, piston is connected by piston rod with the interior lift arm for lifting connecting lever.Hydraulic cylinder is controlled by one four six logical hand-operated direction valves,
The reversal valve has makes piston drive piston rod armed lever is increased, and declines and in the function of hovering.But the design lacks armed lever
Decline auto-lock function, be easily caused farm implements decline it is too fast, there is security risk.In addition, using four six logical control valve controls, valve
Body is big, high cost.
Utility model content
The purpose of this utility model is to provide a kind of farm tractor hydraulic rockshaft, to solve above-mentioned background technology in
The problem of proposition.
For achieving the above object, the utility model provides following technical scheme：A kind of farm tractor hydraulic rockshaft, bag
Include housing, the outside of the housing is connected with outer lift arm and interior lift arm by the lift shaft being rotatably connected to, it is described in carry
The outside that arm is located at outer lift arm is risen, piston is installed in the inner chamber of the housing, on the left of the piston work is fixedly connected with
Stopper rod, the outer lower portion of the interior lift arm is articulated with the left side of piston rod, is provided with support on the left of the housing, described
Frame is connected to the outer lower side of second connecting rod, the shell by rod hinge connection on the left of the right side of adjusting lever, the adjusting lever
The lower end of body is provided with hydraulic valve, and the downside of the outer lift arm is respectively by first connecting rod, second connecting rod and third connecting rod hinge
The left side of hydraulic valve is connected to, the inner chamber of the housing includes ontrol valve assembly, and the top and bottom of the ontrol valve assembly are distinguished
Oil cylinder and oil pump are connected with by pipeline, check valve, safety valve and regulating valve are installed on the outside of the oil cylinder.
Preferably, the lower outside of the interior lift arm is provided with concave sphere groove, and is hinged by concave sphere groove and rotates in work
The left side of stopper rod.
Preferably, the groove being provided with the inner chamber of the housing is identical with piston size is provided with.
Compared with prior art, the beneficial effects of the utility model are：The farm tractor hydraulic rockshaft, by being lifted
Axle drives first connecting rod, second connecting rod and third connecting rod by force feedback to support, when support is subject to abnormal external impacts, by power
Feed back to connecting rod；Adjusting lever feeds back to external force in ontrol valve assembly, and ontrol valve assembly receives Mobile control valve bar after feedback action,
The outer lift arm of lifter declines automatically, plays protection agricultural machinery and implement and tractor hydraulic system effect, it is to avoid energy consumption is wasted, lower reduction of speed
Degree is adjusted to preferable scope by speed-regulating valve, and the outer lift arm of lifter receives abnormal external force punching during being lifted or being declined
Hit, in-oil cylinder oil pressure is raised suddenly extremely, when reaching opening pressure of safety valve, safety valve is opened to let out and rises high pressure except abnormal,
Ensure that there is armed lever to decline auto-lock function for oil cylinder and the safety of the hydraulic system design, it is to avoid cause farm implements decline too fast, exist
Security risk, and this installation cost is low, potential safety hazard index is low, promotes the use of after being worth.
Description of the drawings
Fig. 1 is the utility model structural representation；
Fig. 2 is the utility model part-structure schematic diagram；
Fig. 3 is the utility model system structure diagram.
In figure：1 housing, 2 lift shafts, 3 outer lift arms, lift arm, 5 piston rods, 6 pistons, 7 supports, 8 connecting rods, 9 are adjusted in 4
It is whole bar, 10 first connecting rods, 11 hydraulic valves, 12 second connecting rods, 13 third connecting rods, 14 ontrol valve assemblies, 15 regulating valves, 16 unidirectional
Valve, 17 safety valves, 18 oil cylinders, 19 oil pumps.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
Fig. 1-3 are referred to, the utility model provides a kind of technical scheme：A kind of farm tractor hydraulic rockshaft, including
Housing 1, the outside of the housing 1 is connected with outer lift arm 3 and interior lift arm 4 by the lift shaft 2 being rotatably connected to, described interior
Lift arm 4 is located at the outside of outer lift arm 3, and piston 6 is provided with the inner chamber of the housing 1, and the left side of the piston 6 is fixed and connected
Piston rod 5 is connected to, the outer lower portion of the interior lift arm 4 is articulated with the left side of piston rod 5, and the left side of the housing 1 is provided with
Support 7, the support 7 is articulated with the right side of adjusting lever 9 by connecting rod 8, and the left side of the adjusting lever 9 is connected to second connecting rod 12
Outer lower side, the lower end of the housing 1 is provided with hydraulic valve 11, and the downside of the outer lift arm 3 passes through respectively first connecting rod
10th, second connecting rod 12 and third connecting rod 13 are articulated with the left side of hydraulic valve 11, and the inner chamber of the housing 1 includes ontrol valve assembly
14, the top and bottom of the ontrol valve assembly 14 are connected with oil cylinder 18 and oil pump 19 by pipeline respectively, the oil cylinder 18
Outside is provided with check valve 16, safety valve 17 and regulating valve 15.
Further, the lower outside of the interior lift arm 4 is provided with concave sphere groove, and is hinged by concave sphere groove and rotates in
The left side of piston rod 5.In order to keep concentric stress, and avoid inordinate wear occur between piston rod 5 and piston 6 and hydraulic cylinder,
Ensure the service life of hydraulic cylinder.
Further, the groove being provided with the inner chamber of the housing 1 is identical with the size of piston 6 is provided with, and it is seamless right to carry out
Connect, can be with the more stable of clamping.
The farm tractor hydraulic rockshaft, by lift shaft 2 first connecting rod 10, second connecting rod 12 and third connecting rod are driven
13 by force feedback to support 7, when support 7 is subject to abnormal external impacts, by force feedback to connecting rod 8；Adjusting lever 9 is by outer force feedback
To in ontrol valve assembly 14, ontrol valve assembly 14 receives Mobile control valve bar after feedback action, under the outer lift arm 3 of lifter is automatic
Drop, plays protection agricultural machinery and implement and tractor hydraulic system effect, it is to avoid energy consumption is wasted, and decrease speed is adjusted by speed-regulating valve 15
Save to preferable scope, the outer lift arm 3 of lifter receives abnormal external impacts, the oil pressure in oil cylinder 18 during being lifted or being declined
Suddenly abnormal to raise, when reaching 17 Opening pressure of safety valve, safety valve 17 is opened to let out and rises high pressure except abnormal, it is ensured that the He of oil cylinder 18
There is armed lever to decline auto-lock function for the safety of the hydraulic system design, it is to avoid causes farm implements to decline too fast, there is security risk, and
This installation cost is low, and potential safety hazard index is low, promotes the use of after being worth.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out various changes in the case of without departing from principle of the present utility model and spirit, repaiies
Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (3)
1. a kind of farm tractor hydraulic rockshaft, including housing（1）, it is characterised in that：The housing（1）Outside by turn
The dynamic lift shaft being connected with（2）It is connected with outer lift arm（3）With interior lift arm（4）, the interior lift arm（4）Positioned at outer lift arm
（3）Outside, the housing（1）Inner chamber in piston is installed（6）, the piston（6）Left side be fixedly connected with piston rod
（5）, the interior lift arm（4）Outer lower portion be articulated with piston rod（5）Left side, the housing（1）Left side be provided with
Frame（7）, the support（7）By connecting rod（8）It is articulated with adjusting lever（9）Right side, the adjusting lever（9）Left side be connected to
Two connecting rods（12）Outer lower side, the housing（1）Lower end hydraulic valve is installed（11）, the outer lift arm（3）Downside
Pass through first connecting rod respectively（10）, second connecting rod（12）And third connecting rod（13）It is articulated with hydraulic valve（11）Left side, the shell
Body（1）Inner chamber include ontrol valve assembly（14）, the ontrol valve assembly（14）Top and bottom respectively by pipeline connect
There is oil cylinder（18）And oil pump（19）, the oil cylinder（18）Outside check valve is installed（16）, safety valve（17）And regulating valve
（15）.
2. a kind of farm tractor hydraulic rockshaft according to claim 1, it is characterised in that：The interior lift arm 4
Lower outside is provided with concave sphere groove, and is hinged by concave sphere groove and rotates in piston rod（5）Left side.
3. a kind of farm tractor hydraulic rockshaft according to claim 1, it is characterised in that：The housing（1）It is interior
The groove being provided with chamber with piston is installed（6）Size is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621079329.2U CN206100854U (en) | 2016-09-26 | 2016-09-26 | Farm tractor hydraulic rockshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621079329.2U CN206100854U (en) | 2016-09-26 | 2016-09-26 | Farm tractor hydraulic rockshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206100854U true CN206100854U (en) | 2017-04-19 |
Family
ID=58520851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621079329.2U Active CN206100854U (en) | 2016-09-26 | 2016-09-26 | Farm tractor hydraulic rockshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206100854U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106982560A (en) * | 2017-06-01 | 2017-07-28 | 东洋重工机（大连）有限公司 | A kind of medium-and-large-sized farm tractor hydraulic rockshaft |
-
2016
- 2016-09-26 CN CN201621079329.2U patent/CN206100854U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106982560A (en) * | 2017-06-01 | 2017-07-28 | 东洋重工机（大连）有限公司 | A kind of medium-and-large-sized farm tractor hydraulic rockshaft |
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| GR01 | Patent grant |