CN204921544U - Big oil filling riser lift cylinder hydraulic system - Google Patents
Big oil filling riser lift cylinder hydraulic system Download PDFInfo
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- CN204921544U CN204921544U CN201520639295.7U CN201520639295U CN204921544U CN 204921544 U CN204921544 U CN 204921544U CN 201520639295 U CN201520639295 U CN 201520639295U CN 204921544 U CN204921544 U CN 204921544U
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- valve
- oil
- hoist cylinder
- relief valve
- hydraulic system
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Abstract
The utility model provides a big oil filling riser lift cylinder hydraulic system, relates to a lift cylinder hydraulic system, and overflow valve A (3), overflow valve B (4), lift cylinder (5), one -way throttle valve A (6), switching -over valve A (7), hydraulically controlled check valve (8), switching -over valve B (9), overflow valve C (10), oil pump (12) and oil tank (13) are connected, the utility model discloses an utilize equitable hydraulic system, not only effectual oil expenses pump control system lift cylinder goes up and down, components such as the one -way throttle valve that sets up in the oil circuit passageway between oil tank and oil pump and lift cylinder, hydraulically controlled check valve, overflow valve still effectual realized the passageway in the control of hydraulic oil pressure, realized the purpose of the long -time even running of assurance lift cylinder.
Description
[technical field]
The utility model relates to a kind of hoist cylinder hydraulic system, especially relates to a kind of large oil filling riser hoist cylinder hydraulic system.
[background technique]
In petrochemical industry class enterprise, crude oil, fuel oil, it is with train tank car mostly that all kinds of oil product overland transport such as diesel oil and gasoline dispatches from the factory, large crane tube load bicycle ultrahigh in efficiency, if large oil filling riser operates steadily normally, oil article vehicle is smooth, if large oil filling riser hoist cylinder fault is many, especially internal piston seal ring and rod seal circle damage and leak often, so overhaul number of times will increase, so not only recondition expense is high, but also affect oil article vehicle, production can not normally run, the lip of the fault of large oil filling riser hoist cylinder mainly piston packing and rod seal circle is overturned, cause hydraulic fluid leak, to be that hoist cylinder cavity of resorption rod chamber hydraulic fluid pressure is too high by the reason of overturning cause seal ring lip, generally, when piston rod rises to top, hoist cylinder cavity of resorption rod chamber hydraulic fluid pressure is that 4.0Mpa remains unchanged, but in next joint tank car contraposition of wait, before piston rod declines, hoist cylinder cavity of resorption rod chamber hydraulic fluid pressure can constantly rise, can reach 13.0Mpa, considerably beyond normal operating pressure (4.0Mpa), so just shorten the life-span of seal ring, the reason that hoist cylinder cavity of resorption rod chamber hydraulic fluid pressure constantly rises is that oil product temperature is higher than hydraulic fluid temperature in hydraulic oil tank, especially crude oil and fuel oil viscosity large, to heat before entrucking and make its good fluidity, during entrucking, piston rod drops in tank car, when tank car is filled, piston rod temperature will close to oil product temperature, when piston rod rises to top, normal temperature hydraulic oil in fuel tank just enters hoist cylinder bottom, because piston rod temperature is high, it passes to hoist cylinder lower hydraulic oil heat, hydraulic oil expanded by heating, due to constancy of volume, so pressure will rise.
[summary of the invention]
In order to overcome the deficiency in background technique, the open a kind of large oil filling riser hoist cylinder hydraulic system of the utility model, by utilizing rational hydraulic system, not only effectively with the lifting of oil pump control hoist cylinder, the elements such as the one-way throttle valve arranged in the asphalt channel between fuel tank and oil pump and hoist cylinder, Pilot operated check valve, relief valve also effectively achieve the control to hydraulic fluid pressure in passage, achieve the object ensureing the long-time smooth running of hoist cylinder.
In order to realize described goal of the invention, the utility model adopts following technological scheme:
A kind of large oil filling riser hoist cylinder hydraulic system, comprise relief valve A, relief valve B, hoist cylinder, one-way throttle valve A, selector valve A, Pilot operated check valve, selector valve B, relief valve C, oil pump and fuel tank, described fuel tank connects one end of relief valve A respectively, one end of relief valve B, the P mouth of selector valve A, one end of selector valve B, one end of relief valve C and the filler opening of oil pump, the T mouth of described selector valve A connects the other end of selector valve B respectively, the other end of relief valve C and the oil outlet of oil pump, the A mouth of described selector valve A connects the other end of relief valve A and the rodless cavity of hoist cylinder respectively, the B mouth of described selector valve A connects Pilot operated check valve successively, the other end of relief valve B and the rod chamber of hoist cylinder is connected respectively after one-way throttle valve A.
Described large oil filling riser hoist cylinder hydraulic system, the T mouth of selector valve A, the other end of selector valve B, passage between the other end of relief valve C and the oil outlet of oil pump are provided with pressure gauge C.
Described large oil filling riser hoist cylinder hydraulic system, the A mouth of selector valve A, passage between the other end of relief valve A and the rodless cavity of hoist cylinder are provided with pressure gauge A.
Described large oil filling riser hoist cylinder hydraulic system, the other end of relief valve B, passage between the rod chamber of hoist cylinder and one end of one-way throttle valve A are provided with pressure gauge B.
Owing to have employed technique scheme, the utility model has following beneficial effect:
Large oil filling riser hoist cylinder hydraulic system described in the utility model, by utilizing rational hydraulic system, not only effectively with the lifting of oil pump control hoist cylinder, the elements such as the one-way throttle valve arranged in the asphalt channel between fuel tank and oil pump and hoist cylinder, Pilot operated check valve, relief valve also effectively achieve the control to hydraulic fluid pressure in passage, achieve the object ensureing the long-time smooth running of hoist cylinder; The utility model has the features such as reasonable in design, practical, energy-saving and cost-reducing.
[accompanying drawing explanation]
Fig. 1 is structural representation of the present utility model.
In figure: 1, pressure gauge A; 2, pressure gauge B; 3, relief valve A; 4, relief valve B; 5, hoist cylinder; 6, one-way throttle valve A; 7, selector valve A; 8, Pilot operated check valve; 9, selector valve B; 10, relief valve C; 11, pressure gauge C; 12, oil pump; 13, fuel tank.
[embodiment]
Can explain the utility model in more detail by the following examples, the utility model is not limited to the following examples, and open the purpose of this utility model is intended to protect all changes and improvements within the scope of the utility model;
Large oil filling riser hoist cylinder hydraulic system by reference to the accompanying drawings described in 1, comprises relief valve A3, relief valve B4, hoist cylinder 5, one-way throttle valve A6, selector valve A7, Pilot operated check valve 8, selector valve B9, relief valve C10, oil pump 12 and fuel tank 13, described fuel tank 13 connects one end of relief valve A3 respectively, one end of relief valve B4, the P mouth of selector valve A7, one end of selector valve B9, one end of relief valve C10 and the filler opening of oil pump 12, the T mouth of described selector valve A7 connects the other end of selector valve B9 respectively, the other end of relief valve C10 and the oil outlet of oil pump 12, at the T mouth of selector valve A7, the other end of selector valve B9, passage between the other end of relief valve C10 and the oil outlet of oil pump 12 is provided with pressure gauge C11, and the A mouth of described selector valve A7 connects the other end of relief valve A3 and the rodless cavity of hoist cylinder 5, respectively at the A mouth of selector valve A7, passage between the other end of relief valve A3 and the rodless cavity of hoist cylinder 5 is provided with pressure gauge A1, and the B mouth of described selector valve A7 connects Pilot operated check valve 8 successively, the other end of relief valve B4 and the rod chamber of hoist cylinder 5 is connected respectively, at the other end of relief valve B4 after one-way throttle valve A6, passage between the rod chamber of hoist cylinder 5 and one end of one-way throttle valve A6 is provided with pressure gauge B2.
Implement large oil filling riser hoist cylinder hydraulic system described in the utility model, during use, start oil pump 12, hydraulic oil is transported to the T mouth of selector valve A7 from fuel tank 13, the pressure gauge C11 that passage between oil pump 12 and the T mouth of selector valve A7 is arranged plays the oil pressure that can read hydraulic oil in this passage, when in passage, oil pressure is too high, relief valve C10 starts, discharge unnecessary hydraulic oil, when the selector valve B9 that passage between oil pump 12 and the T mouth of selector valve A7 is provided with plays normal, selector valve B9 closes, when the T mouth of selector valve A7, the other end of selector valve B9, when hydraulic oil in passage between the other end of relief valve C10 and oil pump 12 oil outlet needs emptying, selector valve B9 opens, when T mouth and the connection of A mouth of selector valve A7, P mouth and B mouth are connected, the T mouth of hydraulic oil in fuel tank 13 through selector valve A7 and the rodless cavity of A mouth arrival hoist cylinder 5, hydraulic oil in the rod chamber of hoist cylinder 5 is through one-way throttle valve A6, Pilot operated check valve 8, the B mouth of selector valve A7 and P mouth oil sump tank 13, when one-way throttle valve A6 plays piston rod decline, just hydraulic fluid flow rate can be regulated, Pilot operated check valve 8 plays when piston rod rises to top, Pilot operated check valve 8 is closed automatically, prevent hydraulic fluid leak, when working connection is communicated with piston rod decline oil circuit, Pilot operated check valve 8 just can be opened, relief valve A3 play channel inner pressure between the A mouth and the rodless cavity of hoist cylinder 5 of selector valve A7 excessive time, automatically head pressure is opened, pressure gauge A1 plays the channel inner pressure between A mouth and the rodless cavity of hoist cylinder 5 reading selector valve A7 in real time, relief valve B4 play channel inner pressure between the B mouth and the rod chamber of hoist cylinder 5 of selector valve A7 excessive time, automatically head pressure is opened, pressure gauge B2 plays the channel inner pressure between B mouth and the rod chamber of hoist cylinder 5 reading selector valve A7 in real time.
The non-detailed portion of the utility model is prior art.
Claims (4)
1. a large oil filling riser hoist cylinder hydraulic system, is characterized in that: comprise relief valve A(3), relief valve B(4), hoist cylinder (5), one-way throttle valve A(6), selector valve A(7), Pilot operated check valve (8), selector valve B(9), relief valve C(10), oil pump (12) and fuel tank (13), described fuel tank (13) connects relief valve A(3 respectively) one end, relief valve B(4) one end, selector valve A(7) P mouth, selector valve B(9) one end, relief valve C(10) one end and the filler opening of oil pump (12), described selector valve A(7) T mouth connect selector valve B(9 respectively) the other end, relief valve C(10) the other end and the oil outlet of oil pump (12), described selector valve A(7) A mouth connect relief valve A(3 respectively) the other end and the rodless cavity of hoist cylinder (5), described selector valve A(7) B mouth connect Pilot operated check valve (8) successively, one-way throttle valve A(6) after connect relief valve B(4 respectively) the other end and the rod chamber of hoist cylinder (5).
2. large oil filling riser hoist cylinder hydraulic system according to claim 1, is characterized in that: at selector valve A(7) T mouth, selector valve B(9) the other end, relief valve C(10) the other end and the oil outlet of oil pump (12) between passage on be provided with pressure gauge C(11).
3. large oil filling riser hoist cylinder hydraulic system according to claim 1, is characterized in that: at selector valve A(7) A mouth, relief valve A(3) the other end and the rodless cavity of hoist cylinder (5) between passage on be provided with pressure gauge A(1).
4. large oil filling riser hoist cylinder hydraulic system according to claim 1, is characterized in that: at relief valve B(4) the other end, the rod chamber of hoist cylinder (5) and one-way throttle valve A(6) one end between passage on be provided with pressure gauge B(2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520639295.7U CN204921544U (en) | 2015-08-24 | 2015-08-24 | Big oil filling riser lift cylinder hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520639295.7U CN204921544U (en) | 2015-08-24 | 2015-08-24 | Big oil filling riser lift cylinder hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204921544U true CN204921544U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520639295.7U Active CN204921544U (en) | 2015-08-24 | 2015-08-24 | Big oil filling riser lift cylinder hydraulic system |
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| Country | Link |
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| CN (1) | CN204921544U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134694A (en) * | 2015-08-24 | 2015-12-09 | 洛阳三隆安装检修有限公司 | Big loading arm lifting oil cylinder hydraulic system |
-
2015
- 2015-08-24 CN CN201520639295.7U patent/CN204921544U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134694A (en) * | 2015-08-24 | 2015-12-09 | 洛阳三隆安装检修有限公司 | Big loading arm lifting oil cylinder hydraulic system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |