CN205207318U - Quick oil return oil circuit of hydraulic cylinder - Google Patents
Quick oil return oil circuit of hydraulic cylinder Download PDFInfo
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- CN205207318U CN205207318U CN201520958617.4U CN201520958617U CN205207318U CN 205207318 U CN205207318 U CN 205207318U CN 201520958617 U CN201520958617 U CN 201520958617U CN 205207318 U CN205207318 U CN 205207318U
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Abstract
The utility model provides a quick oil return oil circuit of hydraulic cylinder, belongs to hydraulic equipment technical field. Quick oil return oil circuit of hydraulic cylinder adopts two in -line structures of giving, two being equipped with for the in -line is given the in -line fast and is given the in -line at a slow speed, giving the in -line fast and connecting in parallel between hydraulic tank and hydraulic pressure feeding hydro -cylinder for the in -line at a slow speed, be equipped with slow feeding control valve and one -way throttle governing valve for in the in -line quick at a slow speed for being equipped with fast feeding control valve and hydraulic pressure lock in the in -line, its special part lies in: the second oil return opening is add in the big chamber of hydraulic pressure feeding hydro -cylinder, the second oil return opening passes through go back to the oil pipe way to be connected with hydraulic tank it is equipped with first hydraulically controlled check valve on the road to return oil pipe, the control circuit of first hydraulically controlled check valve and feeding through for the in -line fast. The utility model discloses transfer the in -process at the drilling tool and balance big, the locular pressure differential of hydraulic pressure feeding hydro -cylinder, reduced consumption of power, improved the work efficiency of all -hydraulic geological drilling rig, reduced manufacturing cost.
Description
Technical field
The utility model relates to a kind of hydraulic circuit, and especially a kind of quick oil return circuit of hydraulic jack, belongs to technical field of hydraulic equipment.
Background technique
At present, the feeding system of Full-hydraulic geological drilling rig mainly comprises and singly feeds oil channel structures and two feed oil channel structures, all adopts hydraulic jack drive pattern.Be furnished with two oil circuits two feeding in oil channel structures: fast feed oil circuit with at a slow speed give in-line, when wherein working to in-line at a slow speed, rig is in and normally creeps into or cleaning bottom of hole job state, and feeding rate is slow; Fast feed oil circuit is mainly used in the fast lifting of drilling tool or transfers, the large chamber of hydraulic jack (rodless cavity) oil-feed during drilling tool lifting, loculus (i.e. rod chamber) oil return, hydraulic jack loculus oil-feed when drilling tool is transferred, the oil return of large chamber.Because the cross-section area in the large and small chamber of hydraulic cylinder feed oil cylinder is different, in drilling tool decentralization process, if hydraulic oil can not flow back to hydraulic oil container in time in large chamber, the pressure of loculus can raise, not only increase power consumption, and make drilling tool lowering velocity slack-off, reduce working efficiency, add cost of production.
Model utility content
One of the purpose of this utility model is for two feeding system feeding the Full-hydraulic geological drilling rig of oil channel structures, there is provided that a kind of structure is simple, with low cost, the quick oil return circuit of the hydraulic jack of reliable performance, to improve the working efficiency of Full-hydraulic geological drilling rig, reduce drillng operation energy consumption and cost of production.
The utility model above-mentioned purpose is achieved through the following technical solutions:
The quick oil return circuit of a kind of hydraulic jack, employing is two feeds oil channel structures, described two to in-line be provided with fast feed oil circuit with at a slow speed to in-line, described fast feed oil circuit and be connected in parallel between hydraulic oil container and hydraulic cylinder feed oil cylinder to in-line at a slow speed, be provided with in fast feed oil circuit and feed control valve and hydraulic lock soon, slowly control valve and one-way throttle valve is being fed at a slow speed to being provided with in in-line, its specialization is: set up the second return opening in the described large chamber of hydraulic cylinder feed oil cylinder, described second return opening is connected with hydraulic oil container by return line, described return line is provided with the first Pilot operated check valve, the oil circuit control of described first Pilot operated check valve is communicated with fast feed oil circuit.
The quick oil return circuit of above-mentioned hydraulic jack, the described control valve that feeds soon is three six-way transfer valves.
The quick oil return circuit of above-mentioned hydraulic jack, the described control valve that feeds slowly is three six-way transfer valves.
Another object of the present utility model is the feeding system for the Full-hydraulic geological drilling rig singly feeding oil channel structures, there is provided that a kind of structure is simple, with low cost, the quick oil return circuit of the hydraulic jack of reliable performance, to improve the working efficiency of Full-hydraulic geological drilling rig, reduce drillng operation energy consumption and cost of production.
The quick oil return circuit of a kind of hydraulic jack, adopt and singly feed oil channel structures, described list is connected between hydraulic oil container and hydraulic cylinder feed oil cylinder to in-line, be provided with hydraulic control valve and the second Pilot operated check valve, its specialization is: set up the second return opening in the described large chamber of hydraulic cylinder feed oil cylinder, described second return opening is connected with hydraulic oil container by return line, and described return line is provided with the first Pilot operated check valve, and the oil circuit control of described first Pilot operated check valve is communicated with to in-line with single.
The quick oil return circuit of above-mentioned hydraulic jack, described hydraulic control valve is three six-way transfer valves.
The utility model is set up the second return opening and is connected the return line of the second return opening and hydraulic oil container on the large chamber of hydraulic cylinder feed oil cylinder of Full-hydraulic geological drilling rig feeding system, and on return line, be provided with the first Pilot operated check valve.The utility model is in drilling tool decentralization process, by the return line set up and originally give coordinating of in-line, hydraulic oil in the large chamber of hydraulic cylinder feed oil cylinder can flow back to hydraulic oil container fast, balance hydraulic cylinder feed oil cylinder thus large, the pressure difference of loculus, decrease power consumption, improve the working efficiency of Full-hydraulic geological drilling rig, reduce cost of production, particularly for two feeding system feeding the Full-hydraulic geological drilling rig of oil channel structures, after setting up the second return opening and return line, do not affect the normal work of former slow feeding system, practical application is safe and reliable.
Accompanying drawing explanation
Fig. 1 is two quick oil return circuit schematic diagram of hydraulic jack feeding oil channel structures Full-hydraulic geological drilling rig;
Fig. 2 is two to feeding hydraulic schematic diagram when control valve is in right position in in-line soon;
Fig. 3 is two to feeding hydraulic schematic diagram when control valve is in left position in in-line soon;
Fig. 4 is two to feeding hydraulic schematic diagram when control valve is in right position in in-line slowly;
Fig. 5 is two to feeding hydraulic schematic diagram when control valve is in left position in in-line slowly;
Fig. 6 is the quick oil return circuit schematic diagram of hydraulic jack singly feeding oil channel structures Full-hydraulic geological drilling rig.
In figure, each list of reference numerals is: 1, hydraulic oil container, 2, control valve is fed slowly, 3, feed control valve soon, 4, hydraulic lock, 5, hydraulic cylinder feed oil cylinder, 6, the second return opening, 7, oil return circuit, the 8, first Pilot operated check valve, 8-1, oil circuit control, 9, one-way throttle valve, the 10, second Pilot operated check valve, 11, hydraulic control valve.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Referring to Fig. 1, first embodiment of the present utility model is for two quick oil return circuit of hydraulic jack feeding oil channel structures Full-hydraulic geological drilling rig, its fast feed oil circuit and be connected in parallel between hydraulic oil container 1 and hydraulic cylinder feed oil cylinder 5 to in-line at a slow speed, be provided with in fast feed oil circuit and feed control valve 3 and hydraulic lock 4 soon, slowly control valve 2 and one-way throttle valve 9 is being fed at a slow speed to being provided with in in-line, described feed control valve 3 soon and feed control valve 2 be slowly three six-way transfer valves, its specialization is: set up the second return opening 6 in the large chamber of described hydraulic cylinder feed oil cylinder 5, described second return opening 6 is connected with hydraulic oil container 1 by return line 7, described return line 7 is provided with the first Pilot operated check valve 8, the oil circuit control 8-1 of described first Pilot operated check valve 8 is communicated with fast feed oil circuit.
Referring to Fig. 1, oil channel structures Full-hydraulic geological drilling rig is fed for two, when fast feed oil circuit is in running order, meta is at a slow speed to feeding control valve 2 slowly in in-line, when feeding control valve 3 soon and being in meta, the hydraulic oil exported from oil hydraulic pump flows back to fuel tank 1 through feeding control valve 3 soon, the hydraulic oil in the large chamber of hydraulic cylinder feed oil cylinder 5 is closed by hydraulic lock 4, Pilot operated check valve 6, one-way throttle valve 7, the weights such as the drilling tool promoted rest on correct position, can not occur glide and accidents caused.
Referring to Fig. 2, oil channel structures Full-hydraulic geological drilling rig is fed for two, when fast feed oil circuit is in running order, meta is at a slow speed to feeding control valve 2 slowly in in-line, when fast feed control valve 3 is in right position, from oil hydraulic pump export pressure oil through feeding P mouth, A mouth, the hydraulic lock 4 of control valve 3 soon, enter the large chamber of hydraulic cylinder feed oil cylinder 5, the piston of hydraulic cylinder feed oil cylinder 5 rises, now the hydraulic oil of hydraulic cylinder feed oil cylinder 5 loculus is through hydraulic lock 4, the B mouth feeding control valve 3 soon, T mouth, flow back to fuel tank 1, this is for promoting drilling tool mode of operation.In drilling tool lifting process, a Tee Joint Point is had respectively in the oil circuit of the large loculus of hydraulic lock 4 and hydraulic cylinder feed oil cylinder 5, the large chamber that pressure oil enters hydraulic cylinder feed oil cylinder 5 also flows to one-way throttle valve 9 simultaneously, and because one-way throttle valve 9 is now by closed rotary, pressure oil can not be missed.Simultaneously, also flow to while the hydraulic oil-returning of hydraulic cylinder feed oil cylinder 5 loculus flows through hydraulic lock 4 and feed control valve 2 slowly, because the Median Function feeding control valve 2 is slowly enclosed type, now oil return can only through feeding B mouth, the T mouth of control valve 3 soon, flow back to fuel tank 1, like this when fast feed system is in lifting operating mode, slow feeding system can not affect fast feeding system.
Referring to Fig. 3, oil channel structures Full-hydraulic geological drilling rig is fed for two, when fast feed oil circuit is in running order, meta is at a slow speed to feeding control valve 2 slowly in in-line, when feeding control valve 3 soon and being in left position, from oil hydraulic pump export pressure oil through feeding P mouth, B mouth, the hydraulic lock 4 of control valve 3 soon, enter the loculus of hydraulic cylinder feed oil cylinder 5, the piston of hydraulic cylinder feed oil cylinder 5 declines, now the section hydraulic oil in the large chamber of hydraulic cylinder feed oil cylinder 5 is through an one hydraulic fluid port, hydraulic lock 4, the A mouth feeding control valve 3 soon, T mouth, flows back to fuel tank 1.Owing to having a Tee Joint Point feeding soon between the B mouth of control valve 3 and the V2 mouth of hydraulic lock 4, the pressure oil exported from oil hydraulic pump to flow to the oil circuit control 8-1 of the first Pilot operated check valve 8 through this Tee Joint Point, Pilot operated check valve 8 is opened, another part hydraulic oil in the large chamber of hydraulic cylinder feed oil cylinder 5 is through the second return opening, first Pilot operated check valve 8 also flows back to fuel tank 1, the hydraulic oil in the large chamber of such hydraulic cylinder feed oil cylinder 5 is through two loop stream oil sump tanks 1, this is for transfer drilling tool mode of operation fast, equally because the Median Function feeding control valve 2 is slowly enclosed type, put at the fast speed in the process of drilling tool, slow feeding system also can not affect fast feeding system.
Referring to Fig. 4, oil channel structures Full-hydraulic geological drilling rig is fed for two, when giving at a slow speed in-line in running order, feed control valve 3 in fast feed oil circuit soon and be in meta, when feeding at a slow speed control valve 2 and being in right position, from oil hydraulic pump export pressure oil through feeding P mouth, A mouth, the one-way throttle valve 9 of control valve 2 slowly, enter the large chamber of hydraulic cylinder feed oil cylinder 5, the piston of hydraulic cylinder feed oil cylinder 5 rises, now the hydraulic oil of hydraulic cylinder feed oil cylinder 5 loculus is through feeding B mouth, the T mouth of control valve 2 slowly, flow back to fuel tank 1, this is slow lifting drilling tool mode of operation.Due to the locking effect of hydraulic lock 4, promoting at a slow speed in the process of drilling tool, fast feeding system also can not affect slow feeding system.
Referring to Fig. 5, oil channel structures Full-hydraulic geological drilling rig is fed for two, when giving at a slow speed in-line in running order, feed control valve 3 in fast feed oil circuit soon and be in meta, when feeding at a slow speed control valve 2 and being in left position, from oil hydraulic pump export pressure oil through feeding P mouth, the B mouth of control valve 2 slowly, enter the loculus of hydraulic cylinder feed oil cylinder 5, the piston of hydraulic cylinder feed oil cylinder 5 declines, now the hydraulic oil in the large chamber of hydraulic cylinder feed oil cylinder 5 is through one-way throttle valve 9, the A mouth feeding control valve 2 slowly, T mouth, flows back to fuel tank 1.By regulating the rate of descent of size adjustable oil hydraulic cylinder 5 piston of one-way throttle valve 9 opening, this feeds mode of operation at a slow speed for rig.Due to the locking effect of hydraulic lock 4, in the process fed at a slow speed, fast feeding system also can not affect slow feeding system.
Referring to Fig. 6, second embodiment of the present utility model is for the quick oil return circuit of the hydraulic jack singly feeding oil channel structures Full-hydraulic geological drilling rig, described list is connected between hydraulic oil container 1 and hydraulic cylinder feed oil cylinder 5 to in-line, be provided with hydraulic control valve 11 and the second Pilot operated check valve 10, described hydraulic control valve 11 is three six-way transfer valves, its specialization is: set up the second return opening 6 in the large chamber of described hydraulic cylinder feed oil cylinder 5, described second return opening 6 is connected with hydraulic oil container 1 by return line 7, described return line 7 is provided with the first Pilot operated check valve 8, the oil circuit control 8-1 of described first Pilot operated check valve 8 is communicated with to in-line with single.In the second embodiment of the present utility model, in drilling tool decentralization process, the hydraulic oil in the large chamber of hydraulic cylinder feed oil cylinder 5 is also flow back to fuel tank 1 fast by two oil hydraulic circuits.
Claims (5)
1. the quick oil return circuit of hydraulic jack, employing is two feeds oil channel structures, described two to in-line be provided with fast feed oil circuit with at a slow speed to in-line, described fast feed oil circuit and be connected in parallel between hydraulic oil container (1) and hydraulic cylinder feed oil cylinder (5) to in-line at a slow speed, be provided with in fast feed oil circuit and feed control valve (3) and hydraulic lock (4) soon, slowly control valve (2) and one-way throttle valve (9) is being fed at a slow speed to being provided with in in-line, it is characterized in that, the second return opening (6) is set up in the large chamber of described hydraulic cylinder feed oil cylinder (5), described second return opening (6) is connected with hydraulic oil container (1) by return line (7), described return line (7) is provided with the first Pilot operated check valve (8), the oil circuit control (8-1) of described first Pilot operated check valve (8) is communicated with fast feed oil circuit.
2. the quick oil return circuit of hydraulic jack according to claim 1, is characterized in that, the described control valve (3) that feeds soon is three six-way transfer valves.
3. the quick oil return circuit of hydraulic jack according to claim 1, is characterized in that, the described control valve (2) that feeds slowly is three six-way transfer valves.
4. the quick oil return circuit of hydraulic jack, adopt and singly feed oil channel structures, described list is connected between hydraulic oil container (1) and hydraulic cylinder feed oil cylinder (5) to in-line, be provided with hydraulic control valve (11) and the second Pilot operated check valve (10), it is characterized in that, the second return opening (6) is set up in the large chamber of described hydraulic cylinder feed oil cylinder (5), described second return opening (6) is connected with hydraulic oil container (1) by return line (7), described return line (7) is provided with the first Pilot operated check valve (8), the oil circuit control (8-1) of described first Pilot operated check valve (8) is communicated with to in-line with single.
5. the quick oil return circuit of hydraulic jack according to claim 4, is characterized in that, described hydraulic control valve (11) is three six-way transfer valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520958617.4U CN205207318U (en) | 2015-11-27 | 2015-11-27 | Quick oil return oil circuit of hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520958617.4U CN205207318U (en) | 2015-11-27 | 2015-11-27 | Quick oil return oil circuit of hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205207318U true CN205207318U (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520958617.4U Expired - Fee Related CN205207318U (en) | 2015-11-27 | 2015-11-27 | Quick oil return oil circuit of hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205207318U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595220A (en) * | 2018-12-21 | 2019-04-09 | 中船重工中南装备有限责任公司 | A kind of Slow Close hydraulic cylinder |
-
2015
- 2015-11-27 CN CN201520958617.4U patent/CN205207318U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595220A (en) * | 2018-12-21 | 2019-04-09 | 中船重工中南装备有限责任公司 | A kind of Slow Close hydraulic cylinder |
| CN109595220B (en) * | 2018-12-21 | 2023-12-05 | 中船重工中南装备有限责任公司 | Slowly-closed hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 065000 Langfang golden city of Hebei province Guangyang District Road No. 77 Co-patentee after: Langfang Juli Exploration Technology Co., Ltd Patentee after: INSTITUTE OF EXPLORATION TECHNIQUE, CHINESE ACADEMY OF GEOLOGICAL SCIENCES Address before: 065000 Langfang golden city of Hebei province Guangyang District Road No. 77 Co-patentee before: JULI GEO-ENGINEERING TECHNICAL DEVELOPMENT COMPANY (LANGFANG) Patentee before: INSTITUTE OF EXPLORATION TECHNIQUE, CHINESE ACADEMY OF GEOLOGICAL SCIENCES |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20201127 |