CN202507118U - Hydraulic balance loop and hydraulic balance device - Google Patents
Hydraulic balance loop and hydraulic balance device Download PDFInfo
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- CN202507118U CN202507118U CN2012200118546U CN201220011854U CN202507118U CN 202507118 U CN202507118 U CN 202507118U CN 2012200118546 U CN2012200118546 U CN 2012200118546U CN 201220011854 U CN201220011854 U CN 201220011854U CN 202507118 U CN202507118 U CN 202507118U
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Abstract
The utility model provides a hydraulic balance loop and a hydraulic balance device. The hydraulic balance loop comprises an oil tank, a first filter, a variable displacement pump, a one-way valve, a first overflow valve, a first pressure reducing valve, a crossbeam balance oil cylinder, an energy accumulator, a second pressure reducing valve, a second overflow valve and a ram balance oil cylinder, wherein the input end of the variable displacement pump is connected with the oil tank through the first filter, the output end of the variable displacement pump is connected with the one-way valve, the one-way valve is connected to the first pressure reducing valve, the outlet of the first pressure reducing valve is respectively connected to the crossbeam balance oil cylinder, the first overflow valve, the energy accumulator and the second pressure reducing valve, and the outlet of the second pressure reducing valve is connected to the ram balance oil cylinder and the second overflow valve; the setting pressure of the first overflow valve, the first pressure reducing valve, the second overflow valve and the second pressure reducing valve is sequentially decreased; and the balance pressure of the crossbeam balance oil cylinder is between the pressure of the first pressure reducing valve and the pressure of the first overflow valve, and the balance pressure of the ram balance oil cylinder is between the pressure of the second pressure reducing valve and the pressure of the second overflow valve. The hydraulic balance loop and the hydraulic balance device can simultaneously realize the balance of a crossbeam and a ram of a machine tool.
Description
Technical field
The utility model relates generally to the hydraulic technique field, relates generally to a kind of hydro-cushion loop and a kind of hydraulic balance device.
Background technology
Lathe crossbeam and ram are because of the effect of gravity; Driving force is identical with gravity direction when moving downward, and driving force and gravity direction are opposite when moving upward, if do not take measures gravity is not carried out balance; Not only influence the robust motion of parts; And drive disk assembly to bear the weight of moving component excessive, cause the moving component lopsided wear serious, influence machine tool accuracy.Document number is that the patent of CN201333533Y is to utilize accumulator oil supply oil supply cylinder to realize hydro-cushion, is used for the main shaft balance, and the driven by motor ball screw moves up and down oil cylinder, and accumulator carries out fuel feeding and absorbs oil return; Document number is used for the main shaft balance for the CN201047418Y patent is to utilize variable pump and three-way pressure reducing valve to carry out balance.
Though above-mentioned two patents have all been introduced the method for hydro-cushion; But still have the said balanced loop of following problem: patent CN201333533Y, it is big to take volume, the loop speeds low-response; The load change that oil cylinder when switching-over impacts and motor is suffered is bigger, and only is used for the main shaft balance; The said main shaft balance that also only is used for of patent CN201047418Y.
At present, also be not used for two kinds of balance of load loops of crossbeam and ram simultaneously.Therefore, be necessary to propose the hydro-cushion loop of the gravity of a kind of equalizer simultaneously and ram.
The utility model content
The utility model aims to provide a kind of hydro-cushion loop, and it can realize lathe crossbeam and ram balance simultaneously.
The utility model provides a kind of hydro-cushion loop on the one hand, comprises fuel tank, first filter, and variable pump, check valve, first overflow valve, first pressure-reducing valve, the beam balance oil cylinder, accumulator, second pressure-reducing valve, second overflow valve, the ram balancing cylinder, wherein,
The input of said variable pump is connected with said fuel tank through said first filter; Said variable delivery side of pump is connected with said check valve; Said check valve is connected to said first pressure-reducing valve; The outlet of said first pressure-reducing valve is connected to said beam balance oil cylinder, said first overflow valve, accumulator and said second pressure-reducing valve respectively, and the outlet of said second pressure-reducing valve is connected to the said ram balancing cylinder and second overflow valve;
The set pressure of said first overflow valve, said first pressure-reducing valve, said second overflow valve and said second pressure-reducing valve reduces successively;
The equalizing pressure of said beam balance oil cylinder is between the set pressure of first pressure-reducing valve and first overflow valve, and the equalizing pressure of said ram balancing cylinder is between the set pressure of second pressure-reducing valve and second overflow valve.
Further, said variable pump also is connected with safety valve.
Further, said safety valve is an overflow valve, and said set pressure for safety valve is greater than the set pressure of said first overflow valve.
Further, said variable pump is a limit pressure type variable pump.
Further, said variable delivery side of pump is connected with said check valve through second filter.
Further, said first filter is a coarse filter, and said second filter is a fine filter.
Further, said accumulator also is connected with stop valve.
Further, said beam balance oil cylinder also is connected with pressure switch.
Further, said variable delivery side of pump also is connected with executive component.
The utility model a kind of hydraulic balance device also is provided on the other hand, it has aforesaid hydro-cushion loop.
The utility model is given beam balance oil cylinder fuel feeding by variable pump through check valve, first pressure-reducing valve, gives the accumulator topping up simultaneously, gives ram balancing cylinder fuel feeding through second pressure-reducing valve again; And through each pressure-reducing valve in the setting hydraulic circuit and the set pressure of overflow valve; Make when the beam balance oil cylinder moves downward; Fluid is wherein at first given the accumulator topping up, and when the pressure of accumulator was higher than the set pressure of first overflow valve, fluid was through the first overflow valve overflow; When energy storage pressure was higher than the first pressure-reducing valve set pressure, accumulator can be used as auxiliary hydraulic pressure source usefulness, was crossbeam and ram balancing cylinder fuel feeding; When the ram balancing cylinder moved downward, fluid was through the second overflow valve overflow.Thereby the hydro-cushion loop of the utility model can be realized lathe crossbeam and ram balance simultaneously, and reduces system redundancy, take up room little, effectively reduce cost.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation in a kind of hydro-cushion loop of the utility model.
Fig. 2 is the structural representation in the another kind of hydro-cushion loop of the utility model.
The specific embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Be illustrated in figure 1 as a kind of hydro-cushion loop that the utility model provides, comprise fuel tank 1, the first filter 2; Variable pump 3, check valve 6, the first overflow valves 7; First pressure-reducing valve 8, beam balance oil cylinder 11, accumulator 13; Second pressure-reducing valve, 14, the second overflow valves 15, ram balancing cylinder 16; Wherein, the input of variable pump 3 is connected with fuel tank 1 through first filter 2, and the output of variable pump 3 is connected with check valve 6; The outlet that the outlet that check valve 6 is connected to first pressure-reducing valve, 8, the first pressure-reducing valves 8 is connected to beam balance oil cylinder 11, first overflow valve 7, accumulator 13 and second pressure-reducing valve, 14, the second pressure-reducing valves 14 respectively is connected to the ram balancing cylinder 16 and second overflow valve 15; The set pressure of first overflow valve 7, first pressure-reducing valve 8, second overflow valve 15 and second pressure-reducing valve 14 reduces successively; The equalizing pressure of beam balance oil cylinder 11 is between the set pressure of first pressure-reducing valve 8 and first overflow valve 7, and the equalizing pressure of ram balancing cylinder 16 is between the set pressure of second pressure-reducing valve 14 and second overflow valve 15.
The hydro-cushion loop of the utility model is given beam balance oil cylinder 11 fuel feeding by variable pump 3 through check valve 6, first pressure-reducing valve 8, gives accumulator 13 topping ups simultaneously, gives ram balancing cylinder 16 fuel feeding through second pressure-reducing valve 14 again.Each pressure-reducing valve and overflow valve set pressure are followed successively by first overflow valve 7, first pressure-reducing valve 8, second overflow valve 15, second pressure-reducing valve 14 from big to small.When beam balance oil cylinder 11 moved downward, fluid was wherein at first given accumulator 13 topping ups, and when the pressure of accumulator 13 was higher than the set pressure of first overflow valve 7, fluid was through 7 overflows of first overflow valve.The equalizing pressure of beam balance oil cylinder 11 is between first pressure-reducing valve 8 and first overflow valve, 7 set pressures.When accumulator 13 pressure were higher than first pressure-reducing valve, 8 set pressures, accumulator 13 can be used as auxiliary hydraulic pressure source usefulness, was crossbeam and ram balancing cylinder fuel feeding, effectively improved hydraulic pump service life.When ram balancing cylinder 16 moved downward, fluid was through 15 overflows of second overflow valve.The equalizing pressure of ram balancing cylinder 16 is between the set pressure of second pressure-reducing valve 14 and second overflow valve 15.The hydro-cushion loop of the utility model can be realized lathe crossbeam and ram balance simultaneously, reduces system redundancy, take up room little, effectively reduce cost.
For guaranteeing the safety in hydro-cushion loop, the variable pump 3 of the utility model can also be connected with safety valve 5, and is as shown in Figure 2.Safety valve 5 is preferred to adopt overflow valves, and the set pressure of safety valve 5 is set at the set pressure greater than first overflow valve 7, so that just launch safety valve 5 pressure releases when only the pressure in the loop surpasses the set pressure of first overflow valve 7.
Further, as shown in Figure 2, the variable pump 3 of the utility model can be limit pressure type variable pump.When hydraulic pump pressure reaches it during high set pressure, variable pump 3 off-loads effectively improve system volume efficient, reduce spill losses.
In order to realize better filter effect; Better hydraulic oil is filtered; Protection hydro-cushion loop can be preferably be passed through second filter 4 with the output of variable pump 3 and is connected with check valve 6, increase by second filter 4 after; Can first filter 2 be configured to coarse filter, second filter 4 is configured to fine filter.
For making things convenient for the maintenance in hydro-cushion loop, especially convenient maintenance to accumulator, the accumulator 13 of the utility model can also be connected with stop valve 12, and is as shown in Figure 1.
The beam balance oil cylinder 11 of the utility model can also be connected with pressure switch 10, with the monitoring energy storage pressure, reports to the police when pressure is lower than setting value, thereby guarantees balancing cylinder pressure.
In addition, the output of the variable pump 3 in the hydro-cushion loop of the utility model can also be connected with other executive components, to give all the other executive component fuel feeding, improves the utilization ratio of hydraulic system.
Certainly; For show beam balance oil cylinder 11 and ram balancing cylinder 16 in the pressure of hydraulic oil; The utility model is connected Pressure gauge 9 and 17 respectively on beam balance oil cylinder 11 and ram balancing cylinder 16; Observe balancing cylinder pressure for the operator, and be used to set up the operating pressure of pressure-reducing valve and overflow valve.As shown in Figure 2.
Correspondingly, the utility model also provides a kind of hydraulic balance device, and it has above-described hydro-cushion loop.Hydraulic balance device adopts this hydro-cushion loop, can realize lathe crossbeam and ram balance simultaneously, reduces system redundancy, take up room little, effectively reduce cost.
More than be merely the preferred embodiment of the utility model, or not all within the spirit and principle of the utility model in order to restriction the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. a hydro-cushion loop is characterized in that, comprises fuel tank (1), first filter (2); Variable pump (3), check valve (6), first overflow valve (7), first pressure-reducing valve (8); Beam balance oil cylinder (11), accumulator (13), second pressure-reducing valve (14), second overflow valve (15); Ram balancing cylinder (16), wherein
The input of said variable pump (3) is connected with said fuel tank (1) through said first filter (2); The output of said variable pump (3) is connected with said check valve (6); Said check valve (6) is connected to said first pressure-reducing valve (8); The outlet of said first pressure-reducing valve (8) is connected to said beam balance oil cylinder (11), said first overflow valve (7), accumulator (13) and said second pressure-reducing valve (14) respectively, and the outlet of said second pressure-reducing valve (14) is connected to said ram balancing cylinder (16) and second overflow valve (15);
The set pressure of said first overflow valve (7), said first pressure-reducing valve (8), said second overflow valve (15) and said second pressure-reducing valve (14) reduces successively;
The equalizing pressure of said beam balance oil cylinder (11) is between the set pressure of first pressure-reducing valve (8) and first overflow valve (7), and the equalizing pressure of said ram balancing cylinder (16) is between the set pressure of second pressure-reducing valve (14) and second overflow valve (15).
2. hydro-cushion according to claim 1 loop is characterized in that, said variable pump (3) also is connected with safety valve (5).
3. hydro-cushion according to claim 2 loop is characterized in that, said safety valve (5) is an overflow valve, and the set pressure of said safety valve (5) is greater than the set pressure of said first overflow valve (7).
4. hydro-cushion according to claim 1 loop is characterized in that, said variable pump (3) is a limit pressure type variable pump.
5. hydro-cushion according to claim 1 loop is characterized in that, the output of said variable pump (3) is connected with said check valve (6) through second filter (4).
6. hydro-cushion according to claim 5 loop is characterized in that, said first filter (2) is a coarse filter, and said second filter (4) is a fine filter.
7. hydro-cushion according to claim 1 loop is characterized in that, said accumulator (13) also is connected with stop valve (12).
8. hydro-cushion according to claim 1 loop is characterized in that, said beam balance oil cylinder (11) also is connected with pressure switch (10).
9. according to any described hydro-cushion of claim loop among the claim 1-8, it is characterized in that the output of said variable pump (3) also is connected with executive component.
10. a hydraulic balance device is characterized in that, has any described hydro-cushion of claim loop among the claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200118546U CN202507118U (en) | 2012-01-12 | 2012-01-12 | Hydraulic balance loop and hydraulic balance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200118546U CN202507118U (en) | 2012-01-12 | 2012-01-12 | Hydraulic balance loop and hydraulic balance device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202507118U true CN202507118U (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200118546U Withdrawn - After Issue CN202507118U (en) | 2012-01-12 | 2012-01-12 | Hydraulic balance loop and hydraulic balance device |
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| CN (1) | CN202507118U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528543A (en) * | 2012-01-12 | 2012-07-04 | 上海三一精机有限公司 | Hydraulic balancing loop and hydraulic balancing device |
| CN103394999A (en) * | 2013-07-29 | 2013-11-20 | 四川省自贡市海川实业有限公司 | Automatic alignment fixture |
| CN103586527A (en) * | 2013-11-26 | 2014-02-19 | 山东泰丰液压股份有限公司 | Valve type plate shearer hydraulic control system with safety protection device |
-
2012
- 2012-01-12 CN CN2012200118546U patent/CN202507118U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528543A (en) * | 2012-01-12 | 2012-07-04 | 上海三一精机有限公司 | Hydraulic balancing loop and hydraulic balancing device |
| CN102528543B (en) * | 2012-01-12 | 2015-07-29 | 上海三一精机有限公司 | A kind of Hydraulic Balancing Circuit and a kind of hydraulic balance device |
| CN103394999A (en) * | 2013-07-29 | 2013-11-20 | 四川省自贡市海川实业有限公司 | Automatic alignment fixture |
| CN103394999B (en) * | 2013-07-29 | 2016-08-24 | 四川省自贡市海川实业有限公司 | Automatic capturing fixture |
| CN103586527A (en) * | 2013-11-26 | 2014-02-19 | 山东泰丰液压股份有限公司 | Valve type plate shearer hydraulic control system with safety protection device |
| CN103586527B (en) * | 2013-11-26 | 2015-10-14 | 山东泰丰液压股份有限公司 | With safety guard lock formula plate shearing machine hydraulic control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121031 Effective date of abandoning: 20150729 |
|
| RGAV | Abandon patent right to avoid regrant |