CN103511383A - Inverted support oil cylinder - Google Patents
Inverted support oil cylinder Download PDFInfo
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- CN103511383A CN103511383A CN201210220712.5A CN201210220712A CN103511383A CN 103511383 A CN103511383 A CN 103511383A CN 201210220712 A CN201210220712 A CN 201210220712A CN 103511383 A CN103511383 A CN 103511383A
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- oil circuit
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- piston rod
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Abstract
The invention relates to an inverted support oil cylinder which comprises an oil cylinder body (3), a piston rod (4), a connecting guide sleeve (8), a piston rod assembly (5), a balance valve (10), a rod cavity oil circuit (11), and a rodless cavity oil circuit (12). The bottom of the oil cylinder body is connected with a leg seat (7); the connecting guide sleeve (8) is fixed on a mainframe crossbeam; an opening of the oil cylinder body (3) is fixedly provided with an oil cylinder end; the oil cylinder body is arranged in the connecting guide sleeve (8); the piston rod assembly (5) is arranged in the oil cylinder body; one end of the piston rod is connected with the connecting guide sleeve (8) through a connecting pin (9), and a piston (6) at the other end of the piston rod (4) is arranged in the oil cylinder body (3); the rod cavity oil circuit (11) and the rodless cavity oil circuit (12) are arranged in the piston rod (4); the oil inlet of the rod cavity oil circuit and the oil inlet of the rodless cavity oil circuit (12) are formed in the top end of the piston rod (4) arranged outside the oil cylinder end of the oil cylinder body (3). The inverted support oil cylinder is characterized in that the oil inlet of the rod cavity oil circuit and the oil inlet of the rodless cavity oil circuit are respectively connected with a hydraulic lock (1), wherein the oil inlet of the rod cavity oil circuit and the oil inlet of the rodless cavity oil circuit are formed in the top end of the piston rod (4); the balance valve (10) is arranged on the rod cavity oil circuit on the upper portion of the piston rod (4); the oil outlet of the rod cavity oil circuit and the oil outlet of the rodless cavity oil circuit are formed in two sides of the piston (6). The inverted support oil cylinder is reasonable in design, simple and compact in structure, stable in working stroke, reliable in performance and long in service life.
Description
Technical field
The present invention relates to technical field of engineering machinery, the supporting leg of take keeps stablizing the engineering machinery of operation as the strong point, as piling machinery, Hoisting Machinery etc.A kind of inversion type support oil cylinder specifically.
Background technique
Traditional supporting leg support cylinder generally has two kinds of structural types: the one, with stretching of cylinder piston rod, directly support ground, and shortcoming is poor stability, intensity is low, runs into not solid stable ground during operation, easily causes piston rod crooked, equipment rollover, especially piling machinery.Common solution is oversize piston shank diameter, gain in strength, due to be subject to cylinder diameter to limit its effect undesirable.The 2nd, by oil cylinder pushing supporting mechanism independently, its complex structure, volume is large, and main frame is limited by installing space, and a lot of main frames are difficult for adopting.
Because the piston rod of supporting leg support cylinder exposes for a long time, as piling machinery, oil field drifting machinery etc., its machinery on-site duty cycle long, ground environment is severe, can be subject to the erosion of silt, seawater, slime water; When operation, instrument and other machinery also can be not intended to the piston rod of damaging and exposing, and are easy to cause the damage of piston rod, have therefore reduced working life.
Summary of the invention
The object of the invention is, in order to solve the deficiency of above-mentioned technology, provides inversion type support oil cylinder a kind of reasonable in design, simple in structure, safe and reliable, easy to install.
The technical solution used in the present invention is: a kind of inversion type support oil cylinder, comprise cylinder body, piston rod, connect guide pin bushing, piston-rod assembly, equilibrium valve, rod chamber oil circuit, rodless cavity oil circuit, cylinder body bottom is connected with supporting leg seat, connecting guide pin bushing is fixed on main frame crossbeam, cylinder body upper shed place is fixed with cylinder head, cylinder body is within connecting guide pin bushing, piston-rod assembly is in cylinder body, one end of piston rod by connecting pin be connected guide pin bushing and be connected, the piston of the piston rod the other end is in cylinder body, piston rod inside is provided with rod chamber oil circuit and rodless cavity oil circuit, rod chamber oil circuit filler opening and rodless cavity oil circuit filler opening are located at the piston rod top of cylinder head outside on cylinder body, the rod chamber oil circuit filler opening that it is characterized in that piston rod top is connected with hydraulic lock respectively with rodless cavity oil circuit filler opening, on the rod chamber oil circuit on piston rod top, be provided with equilibrium valve, rod chamber oil circuit oil outlet and rodless cavity oil circuit oil outlet are located at respectively piston both sides.
The present invention is reasonable in design, simple in structure, compact, has changed the structure of traditional support oil cylinder, it is built-in oil circuit that oil circuit is set, cylinder body is stressed, and resistance to flexure is high, and rigidity is strong, on the top of piston-rod assembly, hydraulic lock has been installed, avoid hydraulic system leakage to cause and prop the slip of cylinder body afterwards, equilibrium valve is installed on rod chamber oil circuit and can be effectively solved the vibration occurring when cylinder body rises and declines, working stroke is steady, reliable performance, long service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Mark in figure: 1, hydraulic lock, 2, cylinder head, 3, cylinder body, 4, piston rod, 5, piston-rod assembly, 6, piston, 7, supporting leg seat, 8, connect guide pin bushing, 9, connecting pin, 10, equilibrium valve, 11, rod chamber oil circuit, 12, rodless cavity oil circuit.
Embodiment
As shown in Figure 1: a kind of inversion type support oil cylinder, comprise cylinder body 3, piston rod 4, connect guide pin bushing 8, piston-rod assembly 5, equilibrium valve 10, rod chamber oil circuit 11, rodless cavity oil circuit 12, cylinder body 3 bottoms are connected with supporting leg seat 7, connecting guide pin bushing 8 is fixed on main frame crossbeam, cylinder body 3 upper sheds place are fixed with cylinder head 2, cylinder body 3 is within connecting guide pin bushing 8, piston-rod assembly 5 is in cylinder body, one end of piston rod 4 by connecting pin 9 be connected guide pin bushing 8 and be connected, the piston 6 of piston rod 4 the other ends is in cylinder body 3, piston rod 4 inside are provided with rod chamber oil circuit 11 and rodless cavity oil circuit 12, rod chamber oil circuit filler opening and rodless cavity oil circuit filler opening are located at piston rod 4 tops of cylinder head outside on cylinder body 3, the rod chamber oil circuit filler opening on its piston rod 4 tops is connected with hydraulic lock 1 respectively with rodless cavity oil circuit filler opening, on the rod chamber oil circuit on piston rod 4 tops, be provided with equilibrium valve 10, rod chamber oil circuit 11 oil outlets and rodless cavity oil circuit 12 oil outlets are located at respectively piston 6 both sides.
When oil cylinder is started working, rod chamber hydraulic lock 1 is opened, and hydraulic oil is from the oil-feed of rod chamber oil circuit filler opening, through equilibrium valve 10 throttle orifices, close, main valve open, when hydraulic oil enters rod chamber oil circuit, due to the effect of two chamber difference in volume, produce back pressure, cylinder body 3 steadily stretches out rising; Rodless cavity hydraulic lock 1 is opened, hydraulic oil is from the oil-feed of rodless cavity oil circuit filler opening, 11 oil returns of rod chamber oil circuit, through equilibrium valve 10 main valves, close, rod chamber oil circuit produces back pressure, reaches after setting pressure, throttle orifice is opened, when hydraulic lock is opened oil sump tank, make oil cylinder two cavity pressure balances, cylinder body 3 is steadily regained and is declined.Because rod chamber oil circuit filler opening is connected with hydraulic lock 1 respectively with rodless cavity oil circuit filler opening, after stretching out rising, cylinder body 3 can avoid hydraulic system leakage to cause the slip of cylinder body 3, on the rod chamber oil circuit on piston rod 4 tops, be provided with equilibrium valve 10, can make cylinder body 3 steady when stretching out rising and regaining decline, can not produce flutter phenomenon.Reliable performance of the present invention, resistance to flexure is high, safe and reliable, long service life.
Claims (1)
1. an inversion type support oil cylinder, comprise cylinder body (3), piston rod (4), connect guide pin bushing (8), piston-rod assembly (5), equilibrium valve (10), rod chamber oil circuit (11), rodless cavity oil circuit (12), cylinder body bottom is connected with supporting leg seat (7), connecting guide pin bushing (8) is fixed on main frame crossbeam, cylinder body (3) upper shed place is fixed with cylinder head, cylinder body is within connecting guide pin bushing (8), piston-rod assembly (5) is in cylinder body, one end of piston rod by connecting pin (9) be connected guide pin bushing (8) and be connected, the piston (6) of piston rod (4) the other end is in cylinder body (3), piston rod (4) inside is provided with rod chamber oil circuit (11) and rodless cavity oil circuit (12), rod chamber oil circuit filler opening and rodless cavity oil circuit filler opening are located at piston rod (4) top of the upper cylinder head of cylinder body (3) outside, the rod chamber oil circuit filler opening that it is characterized in that piston rod (4) top is connected with hydraulic lock (1) respectively with rodless cavity oil circuit filler opening, on the rod chamber oil circuit on piston rod (4) top, be provided with equilibrium valve (10), rod chamber oil circuit oil outlet and rodless cavity oil circuit oil outlet are located at respectively piston (6) both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210220712.5A CN103511383A (en) | 2012-06-29 | 2012-06-29 | Inverted support oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210220712.5A CN103511383A (en) | 2012-06-29 | 2012-06-29 | Inverted support oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103511383A true CN103511383A (en) | 2014-01-15 |
Family
ID=49894640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210220712.5A Pending CN103511383A (en) | 2012-06-29 | 2012-06-29 | Inverted support oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103511383A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111065828A (en) * | 2017-08-30 | 2020-04-24 | Smc 株式会社 | Balance cylinder and workpiece conveying device using same |
-
2012
- 2012-06-29 CN CN201210220712.5A patent/CN103511383A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111065828A (en) * | 2017-08-30 | 2020-04-24 | Smc 株式会社 | Balance cylinder and workpiece conveying device using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |