CN202642878U - Hydraulic balance device for car puller - Google Patents
Hydraulic balance device for car puller Download PDFInfo
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- CN202642878U CN202642878U CN 201220255795 CN201220255795U CN202642878U CN 202642878 U CN202642878 U CN 202642878U CN 201220255795 CN201220255795 CN 201220255795 CN 201220255795 U CN201220255795 U CN 201220255795U CN 202642878 U CN202642878 U CN 202642878U
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- oil cylinder
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Abstract
A hydraulic balance device for a car puller comprises an oscillating oil cylinder hydraulic control loop and a large arm oil cylinder control loop. The oscillating oil cylinder hydraulic control loop comprises an oil pump, an oil tank, a connection oil pump, a three-position four-way electro-hydraulic directional control valve of the oil tank and a lifting control oil channel respectively corresponding to an oscillating oil cylinder and composed of a hydraulic control one-way valve, a one-way throttle valve and an overflowing valve. The large arm oil cylinder control loop uses a hydraulic balance valve, and an oil inlet/outlet pipe of the oscillating oil cylinder respectively leads out two oil pipes and is connected at two ends of the large arm oil cylinder through the hydraulic balance valve. The hydraulic balance valve comprises a one-way valve and a one-way throttle valve. An oil pipe corresponding to a descending oil channel is connected with a rodless cavity of a large arm oil cylinder and connected with a control oil port of the hydraulic balance valve. The hydraulic balance device eliminates a control oil loop of a control oil pump, simplifies a hydraulic loop of the car puller, reduces oil leakage points and fault rate, simultaneously enables curve motion of the large arm oscillating oil cylinder of the car puller and linear motion of the large arm oil cylinder to be synchronous and guarantees production continuity.
Description
Technical field
The utility model relates to hydraulic gear, particularly a kind of car puller hydraulic balance device.
Background technology
Car puller is an important component part of tipper unloading system, and its effect is to decompose car team, and loaded vehicle is pulled between tipper two end ring.The cargo handling operation that the large arm luffing mechanism of car puller is a key in the tipper unloading system, in order to improve the efficient of unloading, tipper is when the upset discharge process, and the large arm of car puller need to lift and from the tipper flank movement to the loaded vehicle end.Because large arm pitching action is very frequent, requires this stable action reliable, avoids when particularly being positioned at two end positions impacting, this is most important to protection equipment and complete machine stability.
The luffing of the large arm of car puller is driven by hydraulic efficiency pressure system, and hydraulic efficiency pressure system is when startup, shutdown, speed change or commutation, because the effect of inertia of working fluid and movable parts makes the very high peak pressure of instantaneous formation in the system, this phenomenon is called as hydraulic efficiency impact.
When large arm pitching stopped, the hydraulic efficiency impact meeting that force of inertia produces was trembleed the whole car body of car puller.Therefore when operation, to avoid the formation of hydraulic efficiency impact as far as possible, thus the stability when reducing the large arm of hydraulic efficiency impact control car puller and stopping.
Existing car puller hydraulic efficiency pressure system adopts energy storage accumulation of energy repairing, needs the control oil return line of a cover control oil pump, thereby leaks easily.
Summary of the invention
The purpose of this utility model is to design a kind of car puller hydraulic balance device, make the straight-line motion of the curvilinear motion of the large arm swing oil cylinder of car puller and big arm cylinder synchronous, guarantee the continuity of producing to reduce Hydraulic Elements and leakage, reduce trouble reduces labour intensity.
For achieving the above object, the technical solution of the utility model is:
A kind of car puller hydraulic balance device, comprise oscillating oil cylinder hydraulic control circuit and big arm cylinder control loop, wherein, the oscillating oil cylinder hydraulic control circuit elevating control oil circuit that comprises the 3-position 4-way electro-hydraulic reversing valve of oil pump, fuel tank, connection oil pump, fuel tank and respectively corresponding oscillating oil cylinder lifting, formed by hydraulic control one-way valve, one-way throttle valve, by pass valve; It is characterized in that, described big arm cylinder control loop adopts hydraulically balanced valve, and the turnover oil pipe of described oscillating oil cylinder is drawn respectively two oil pipes, by the two ends of hydraulically balanced valve access big arm cylinder, wherein, described hydraulically balanced valve comprises a check valve, an one-way throttle valve; One oil pipe of corresponding decline oil circuit control connects the rodless cavity of big arm cylinder, and connects hydraulically balanced valve control port.
The beneficial effects of the utility model:
1. the remove controls control oil return line of oil pump has been simplified the hydraulic circuit of car puller, has reduced the leakage of oil point, has reduced fault rate, has alleviated labour intensity.
2. the functional module that replaces the hydraulic accumulator of original use with hydraulically balanced valve, the straight-line motion that reaches the curvilinear motion of the large arm swing oil cylinder of car puller and big arm cylinder is synchronous, guarantees the continuity of producing to reduce Hydraulic Elements and leakage, reduce trouble.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
Referring to Fig. 1, a kind of car puller hydraulic balance device of the present utility model, comprise oscillating oil cylinder 10 hydraulic control circuits and big arm cylinder 20 control loops, wherein, the oscillating oil cylinder 10 hydraulic control circuits elevating control oil circuit that comprises oil pump 1, fuel tank 2, connect the 3-position 4-way electro-hydraulic reversing valve 3 of oil pump 1 and fuel tank 2 and respectively corresponding oscillating oil cylinder 10 liftings, formed by hydraulic control one-way valve 4,4 ', one-way throttle valve 5,5 ', by pass valve 6,6 '; Described big arm cylinder 20 control loops adopt hydraulically balanced valve 7, the turnover oil pipe of oscillating oil cylinder 10 is drawn respectively two oil pipes 8,8 ', by the two ends of hydraulically balanced valve 7 access big arm cylinders 20, wherein, described hydraulically balanced valve 7 comprises a check valve 71, an one-way throttle valve 72; One oil pipe 8 ' of corresponding decline oil circuit control connects the rodless cavity of big arm cylinder 20, and connects hydraulically balanced valve 7 control ports.
Mode of operation of the present utility model is:
When oscillating oil cylinder was in upward movement, the pressure oil of rising was oil-filled to the rod chamber of big arm cylinder by the hydraulic control one-way valve in the hydraulically balanced valve, and oil return reaches the upward movement of big arm cylinder by the oil return pipe oil return of oscillating oil cylinder.
When oscillating oil cylinder is in descending motion, the pressure oil one tunnel that descends directly enters the rodless cavity of big arm cylinder, another road promotes spool by the guiding valve in the hydraulically balanced valve, and oil return is got back to the oil return line oil return of oscillating oil cylinder by the flow regulating valve in the balance cock, reaches the descending motion of big arm cylinder.
Claims (1)
1. car puller hydraulic balance device, comprise oscillating oil cylinder hydraulic control circuit and big arm cylinder control loop, wherein, the oscillating oil cylinder hydraulic control circuit elevating control oil circuit that comprises the 3-position 4-way electro-hydraulic reversing valve of oil pump, fuel tank, connection oil pump, fuel tank and respectively corresponding oscillating oil cylinder lifting, formed by hydraulic control one-way valve, one-way throttle valve, by pass valve; It is characterized in that, described big arm cylinder control loop adopts hydraulically balanced valve, and the turnover oil pipe of described oscillating oil cylinder is drawn respectively two oil pipes, by the two ends of hydraulically balanced valve access big arm cylinder, wherein, described hydraulically balanced valve comprises a check valve, an one-way throttle valve; One oil pipe of corresponding decline oil circuit control connects the rodless cavity of big arm cylinder, and connects hydraulically balanced valve control port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220255795 CN202642878U (en) | 2012-06-01 | 2012-06-01 | Hydraulic balance device for car puller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220255795 CN202642878U (en) | 2012-06-01 | 2012-06-01 | Hydraulic balance device for car puller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202642878U true CN202642878U (en) | 2013-01-02 |
Family
ID=47412016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220255795 Expired - Fee Related CN202642878U (en) | 2012-06-01 | 2012-06-01 | Hydraulic balance device for car puller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202642878U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679012A (en) * | 2018-07-16 | 2018-10-19 | 武汉科技大学 | A kind of readjustment machine large arm fluid power system |
-
2012
- 2012-06-01 CN CN 201220255795 patent/CN202642878U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679012A (en) * | 2018-07-16 | 2018-10-19 | 武汉科技大学 | A kind of readjustment machine large arm fluid power system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20150601 |
|
| EXPY | Termination of patent right or utility model |