CN201344164Y - Combined hydraulic cylinder - Google Patents
Combined hydraulic cylinder Download PDFInfo
- Publication number
- CN201344164Y CN201344164Y CNU200920018062XU CN200920018062U CN201344164Y CN 201344164 Y CN201344164 Y CN 201344164Y CN U200920018062X U CNU200920018062X U CN U200920018062XU CN 200920018062 U CN200920018062 U CN 200920018062U CN 201344164 Y CN201344164 Y CN 201344164Y
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- cylinder
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- cylinder body
- piston
- hydraulic cylinder
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Abstract
The utility model relates to a combined hydraulic cylinder, in particular to a combined hydraulic cylinder, which is applied in large-scale hydraulic devices such as hydraulic energy accumulation oil-well rigs, hydraulic energy accumulation oil workover rigs and the like. The combined hydraulic cylinder comprises a small piston, a small piston rod, a small cylinder body, a big piston, a big cylinder body, a cylinder base, an oil port connector, a guide bushing and a cylinder head. Two piston-type hydraulic cylinders are combined into a combined hydraulic cylinder, and a piston rod of one piston type hydraulic cylinder is a cylinder body of the other piston type hydraulic cylinder. The combined hydraulic cylinder has the advantages that the work is reliable, the performance is stable, the structure is simple, the combined hydraulic cylinder can realize combination of a plurality of pressure cavities, is convenient for realizing speed control, in particular can satisfy various speed demands of big hooks of drilling rigs and workover rigs. The purpose of the utility model is to provide a combined hydraulic cylinder which is convenient for manufacturing, repairing and controlling large-scale hydraulic devices such as hydraulic energy accumulation oil-well rigs, hydraulic energy accumulation oil workover rigs and the like.
Description
Technical field
The utility model relates to a kind of large hydraulic equipment combined type hydraulic cylinders such as hydraulic energy accumulation petroleum rig, hydraulic energy accumulation petroleum workover rig that are applicable to.
Background technique
Large hydraulic equipment such as hydraulic energy accumulation petroleum rig, hydraulic energy accumulation petroleum workover rig replace derrick with combined type hydraulic cylinder.Former combined type hydraulic cylinder complex structure, the control system complexity, processing, inconvenient maintenance can not be controlled the hook speed of well repairing machine, rig well according to need of work.
Summary of the invention
The utility model is for solving the above-mentioned technical problem of large hydraulic equipment such as hydraulic energy accumulation petroleum rig and hydraulic energy accumulation petroleum workover rig with the combined type hydraulic cylinder existence, and adopt two piston-type hydraulic cylinders to form a combined type hydraulic cylinder: the piston rod of one of them piston-type hydraulic cylinder is the cylinder body of another piston-type hydraulic cylinder.The purpose of this utility model is exactly to provide a kind of combined type hydraulic cylinder of processing, keep in repair and controlling be convenient to for large hydraulic equipment such as hydraulic energy accumulation petroleum rig and hydraulic energy accumulation petroleum workover rigs.
Technical solution of the present utility model is: large hydraulic equipment combined type hydraulic cylinders such as hydraulic energy accumulation petroleum rig and hydraulic energy accumulation petroleum workover rig, comprise small piston, small piston rod, little cylinder body, big piston, big cylinder body, cylinder seat, port connection, guide sleeve, cylinder cap is characterized in that: small piston, small piston rod, little cylinder body is formed small piston formula oil hydraulic cylinder, little cylinder body, big piston, big cylinder body is formed big piston formula oil hydraulic cylinder, little cylinder body in the small piston formula oil hydraulic cylinder is as the piston rod of big piston formula oil hydraulic cylinder, small piston rod is a hollow circular-tube, and small piston is equipped with on top, and the bottom connects with port connection, little cylinder body is enclosed within outside small piston and the small piston rod, its top is with cylinder cap, and the bottom connects with big piston, and the cylinder seat supports is in the bottom of big piston, big cylinder body is enclosed within outside big piston and the little cylinder body, its upper end is fixed with cylinder cap, and bottom and cylinder seat are fixed, and guide sleeve is installed between little cylinder body and the big cylinder body top.
The upper and lower part of described big cylinder body all has oilhole, and its upper oil hole is connected with high flow directional control valve by pipeline, and following oilhole is connected with the Hydraulic Adjustable Speed brake valve.
Described cylinder seat is a hollow circular-tube, and the top external diameter is less than lower outer diameter, and flange plate is processed in the bottom, and top has two side holes.
Above-mentioned combination hydraulic cylinder structure can be formed several pressure chambers: main oil pocket A, and auxiliary oil pocket B, auxiliary oil pocket C and emptying oil pocket D (need not).
The utlity model has following advantage:
1, reliable operation, stable performance, compact structure can be realized the combination of a plurality of pressure chambers.
2, simple in structure, be convenient to processing, assembling.
3, be convenient to realize speed controlling, particularly can satisfy the various rate requests of the hook of rig, well repairing machine.
Description of drawings
Fig. 1 is a kind of combined type hydraulic cylinder schematic representation.
The 1-small piston, 2-small piston rod, the little cylinder body of 3-, 4-big piston, the big cylinder body of 5-, 6-cylinder seat, 7-port connection, 8-guide sleeve, 9-cylinder cap.
Embodiment
Referring to Fig. 1, the utility model comprises: small piston 1, small piston rod 2, little cylinder body 3, big piston 4, big cylinder body 5, cylinder seat 6, port connection 7, guide sleeve 8, cylinder cap 9.
Because small piston 1 and small piston rod 2 are fixed, little cylinder body 3 and big piston 4 can pump, and the overhead traveling crane assembly in the well repairing machine, hoisting system of rig is fixed on the top of little cylinder body 3, the hook assembly is got in touch by the pulley in wire rope and the overhead traveling crane assembly again, therefore, hook does to promote, fall motion with pumping of little cylinder body 3.
The utility model when work, the pressure oil of system by big latus rectum selector valve respectively with A chamber hydraulic fluid port, B chamber hydraulic fluid port, C chamber hydraulic fluid port links to each other.Handle the pilot valve of big latus rectum selector valve, the flow direction of control system pressure oil, the needed various power shelves of the equipment that just can obtain are so that the hook speed of control well repairing machine, rig.Specific operation are as follows:
As A, B, when C three chambeies enter high pressure oil simultaneously, this moment the lifting force minimum, be the I shelves;
2. advance high pressure oil simultaneously as A, B two chambeies, and C chamber and oil return pipeline be when linking, lifting force at this moment is the II shelves;
3. advance high pressure oil simultaneously as A, C two chambeies, and B chamber and oil return pipeline be when linking, lifting force at this moment is the III shelves;
4. advance high pressure oil when the A chamber, and B, C two chambeies and oil return pipeline be when linking, the lifting force maximum is the IV shelves at this moment;
5. meet card when promoting, when being unable to lift tubing string with the IV shelves, need the pressure of system is brought up to maximum permissible value, be the accident shelves this moment.
Claims (3)
1, a kind of combined type hydraulic cylinder, comprise small piston (1), small piston rod (2), little cylinder body (3), big piston (4), big cylinder body (5), cylinder seat (6), port connection (7), guide sleeve (8), cylinder cap (9), it is characterized in that: small piston (1), small piston rod (2), little cylinder body (3) is formed small piston formula oil hydraulic cylinder, little cylinder body (3), big piston (4), big cylinder body (5) is formed big piston formula oil hydraulic cylinder, little cylinder body (3) in the small piston formula oil hydraulic cylinder is as the piston rod of big piston formula oil hydraulic cylinder, small piston rod (2) is a hollow circular-tube, small piston (1) is equipped with on top, the bottom connects with port connection (7), little cylinder body (3) is enclosed within outside small piston (1) and the small piston rod (2), its top is with cylinder cap (9), and the bottom connects with big piston (4), and cylinder seat (6) is supported on the bottom of big piston (4), big cylinder body (5) is enclosed within outside big piston (4) and the little cylinder body (3), its upper end is fixing with cylinder cap (9), and bottom and cylinder seat (6) are fixing, and guide sleeve (8) is installed between little cylinder body (3) and big cylinder body (5) top.
2, a kind of combined type hydraulic cylinder according to claim 1 is characterized in that: big cylinder body (5) upper and lower part all has oilhole, and its upper oil hole is connected with high flow directional control valve by pipeline, and following oilhole is connected with the Hydraulic Adjustable Speed brake valve.
3, combined type hydraulic cylinder according to claim 1 is characterized in that: cylinder seat (6) is a hollow circular-tube, and the top external diameter is less than lower outer diameter, and flange plate is processed in the bottom, and top has two side holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920018062XU CN201344164Y (en) | 2009-01-19 | 2009-01-19 | Combined hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920018062XU CN201344164Y (en) | 2009-01-19 | 2009-01-19 | Combined hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201344164Y true CN201344164Y (en) | 2009-11-11 |
Family
ID=41275746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200920018062XU Expired - Fee Related CN201344164Y (en) | 2009-01-19 | 2009-01-19 | Combined hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201344164Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893017A (en) * | 2010-07-22 | 2010-11-24 | 泸州众大科技液压件有限公司 | Multi-functional integrated type hydraulic cylinder |
| CN103256275A (en) * | 2013-02-01 | 2013-08-21 | 福建省龙岩盛通液压有限公司 | Quick double-acting hydraulic cylinder |
-
2009
- 2009-01-19 CN CNU200920018062XU patent/CN201344164Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893017A (en) * | 2010-07-22 | 2010-11-24 | 泸州众大科技液压件有限公司 | Multi-functional integrated type hydraulic cylinder |
| CN101893017B (en) * | 2010-07-22 | 2012-09-26 | 泸州众大科技液压件有限公司 | Multi-functional integrated type hydraulic cylinder |
| CN103256275A (en) * | 2013-02-01 | 2013-08-21 | 福建省龙岩盛通液压有限公司 | Quick double-acting hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091111 Termination date: 20120119 |