CN202833356U - Load-sensitive hydraulic pressure transformer - Google Patents
Load-sensitive hydraulic pressure transformer Download PDFInfo
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- CN202833356U CN202833356U CN 201220483307 CN201220483307U CN202833356U CN 202833356 U CN202833356 U CN 202833356U CN 201220483307 CN201220483307 CN 201220483307 CN 201220483307 U CN201220483307 U CN 201220483307U CN 202833356 U CN202833356 U CN 202833356U
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Abstract
The utility model belongs to the technical field of hydraulic pressure, and provides a load-sensitive hydraulic pressure transformer which is particularly suitable for energy conservation and noise reduction control with large load change of constant pressure network hydraulic users. The load-sensitive hydraulic pressure transformer comprises a hydraulic pressure transformer which is controlled by a hydraulic cylinder and a load-sensitive control valve. According to the load-sensitive hydraulic pressure transformer, output pressure can be regulated automatically according to load requirements so as to enable the output pressure to be slightly higher than the pressure which loads require all the time, and thus an energy-saving purpose can be achieved.
Description
Technical field
The utility model belongs to the hydraulics field, relates to a kind of load-sensitive hydraulic transformer, is specially adapted to the hydraulic pressure user's that load variations is large in the constant pressure network Energy Saving Control, can satisfy hydraulic pressure user classification or divided working status energy supply demand.
Background technique
Existing hydraulic transformer does not possess the load-sensitive function.
For example, China Patent Publication No. CN1621699A, open day on June 1st, 2005, the name of innovation and creation is called a kind of hydraulic transformer of oil hydraulic cylinder control, this application case discloses a kind of double-acting hydraulic cylinder and thrust plate forms oil hydraulic cylinder control transmission type structure, can export larger power and control the thrust plate rotation, by the to-and-fro motion of solenoid directional control valve control oil hydraulic cylinder, thereby the left rotation and right rotation of control thrust plate, control are flexibly, reliably.Its deficiency is to use solenoid directional control valve can not automatically regulate according to the load needs rotation of thrust plate, namely can not automatically control delivery pressure according to the needs of load, does not also namely possess the load-sensitive function.
Summary of the invention
The purpose of this utility model is exactly in order to overcome above-mentioned deficiency of the prior art, a kind of load-sensitive hydraulic transformer is provided, this load-sensitive hydraulic transformer is according to the situation of change of induced pressure, automatic regulation output pressure, make delivery pressure a little more than the required pressure of load, thereby reach energy-conservation purpose.
In order to solve the problems of the technologies described above, the purpose of this utility model is achieved by the following technical measures: the load-sensitive hydraulic transformer comprises hydraulic transformer, load-sensitive control valve that oil hydraulic cylinder is controlled; Described oil hydraulic cylinder for the control hydraulic transformer is double-acting straight line oil hydraulic cylinder or oscillating motor, and double-acting straight line oil hydraulic cylinder or oscillating motor are provided with k1, two hydraulic fluid ports of k2; Described load-sensitive control valve is a 3-position 4-way hydraulicchange-over valve, be provided with four hydraulic fluid port a1, t1, k3, k4 and two liquid controling cavity b1 and l1, hydraulic fluid port a1 is communicated with the constant voltage inlet opening A of hydraulic transformer, liquid controling cavity b1 is communicated with the delivery pressure mouth B of hydraulic transformer, hydraulic fluid port t1 is communicated with fuel tank interface T, hydraulic fluid port k3 is communicated with the control port k1 of the oil hydraulic cylinder of hydraulic transformer, and hydraulic fluid port k4 is communicated with the control port k2 of the oil hydraulic cylinder of hydraulic transformer, and liquid controling cavity l1 is communicated with loading interfaces L.
In technique scheme, described load-sensitive control valve is comprised of bonnet, valve body, valve pocket, spool, adjustable spring, protecgulum, spring adjustable lever, and liquid controling cavity l1 one side of spool is provided with adjustable spring.
The beneficial effects of the utility model have provided a kind of load-sensitive hydraulic transformer, and this load-sensitive hydraulic transformer can according to the automatic regulation output pressure of load needs, make delivery pressure a little more than the required pressure of load, thereby reach energy-conservation purpose all the time.
Description of drawings
Fig. 1 is the principle schematic of the utility model load-sensitive hydraulic transformer.
Fig. 2 is the structural representation of load-sensitive control valve in the utility model.
Wherein: 15. bonnets, 16. valve bodies, 17. valve pockets, 18. spools, 19. adjustable springs, 20. protecgulums, 21. spring adjustable levers.
Fig. 3 is the structural representation of the hydraulic transformer of oil hydraulic cylinder control in the utility model.
Fig. 4 is the A-A sectional view of Fig. 3.
Fig. 5 is the front-end face view of the thrust plate of the hydraulic transformer of oil hydraulic cylinder control in the utility model.
Fig. 6 is the B-B partial sectional view of Fig. 5.
Fig. 7 is the front-end face view of rear end cover in the utility model.
Fig. 8 is the ear end face view of rear end cover in the utility model.
Wherein: 1. main shaft, 2. housing, 3. plunger, 4. thrust plate, 5. oscillating oil cylinder, 6. rear end cover, 7. bearing, 8. transition end cap, 9. plunger case, 10. swash plate, 11. bearings, 12. rotary shaft blades, 13. stator blades, 14. seal rings.
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
As shown in Figure 1, 2, the present embodiment provides a kind of load-sensitive hydraulic transformer, comprises the hydraulic transformer of load-sensitive control valve, oil hydraulic cylinder control.
Described load-sensitive control valve is the pilot operated directional control valve of a 3-position 4-way, be installed on the housing of transformer, be provided with four hydraulic fluid port a1, t1, k3, k4 and two liquid controling cavity b1 and l1, hydraulic fluid port a1 is communicated with the constant voltage inlet opening A of hydraulic transformer, liquid controling cavity b1 is communicated with the delivery pressure mouth B of hydraulic transformer, hydraulic fluid port t1 is communicated with fuel tank interface T, hydraulic fluid port k3 is communicated with the control port k1 of the oscillating oil cylinder of hydraulic transformer, hydraulic fluid port k4 is communicated with the control port k2 of the oscillating oil cylinder of hydraulic transformer, and liquid controling cavity l1 is communicated with loading interfaces L.
Described load-sensitive control valve is comprised of bonnet 15, valve body 16, valve pocket 17, spool 18, adjustable spring 19, protecgulum 20, spring adjustable lever 21, and liquid controling cavity l1 one side of spool 18 is provided with adjustable spring 19.
The load-sensitive control valve that the hydraulic transformer of controlling in conjunction with oscillating oil cylinder designs has two characteristics: (1) is in the moving process of spool 18, the power that requires adjustable spring 19 to produce changes little, be designed to 1.5MPa, so the spring requirement is long, rigidity is smaller; (2) require the rigidity of adjustable spring 19 and impacting force adjustable, therefore can by changing spring and spring adjustable lever 21 change decrements, regulate impacting force.
Shown in Fig. 3,4, the hydraulic transformer of described oil hydraulic cylinder control is comprised of main shaft 1, housing 2, plunger 3, plunger case 9, swash plate 10, oscillating oil cylinder 5, and described oscillating oil cylinder 5 is provided with two control port k1 and k2; Described oscillating oil cylinder 5 comprises transition end cap 8, thrust plate 4, rear end cover 6, rotary shaft blade 12, stator blade 13, seal ring 14, one end of described main shaft 1 is installed in the bearing 11 on the housing 2, the other end passes plunger case 9, thrust plate 4, transition end cap 8, be installed in the bearing 7 on the rear end cover 6, described thrust plate 4 is installed in the circular hole of transition end cap 8 as the rotating shaft of oscillating oil cylinder 5 simultaneously, described transition end cap 8 is fastenedly connected by screw and housing 2, described rear end cover 6 is fastenedly connected by screw and transition end cap 8, described transition end cap 8 and rear end cover 6 form the shell of oscillating oil cylinders 5, described rotary shaft blade 12 is installed on the thrust plate 4 by screw, described stator blade 13 is installed in the rear end cover 6 by screw, and described seal ring 14 is installed in the groove of rotary shaft blade 12 and stator blade 13.
Such as Fig. 5,6,7, shown in 8, described thrust plate 4 front-end faces are provided with high pressure oil groove A, load oil groove B, oil-return groove T, be provided with high-pressure channel A1 in the described thrust plate 4, load channel B1, drainback passage T1, described rear end cover 6 front-end faces are provided with high-pressure oil passage A2, load oil circuit B2, oil circuit T2, described rear end cover 6 ear end faces are provided with high pressure oilhole A3, load oilhole B3, spill port T3, high pressure oil groove A is by high-pressure channel A1, high-pressure oil passage A2 communicates with high pressure hydraulic fluid port A3, load oil groove B is by load channel B1, load oil circuit B2 communicates with load hydraulic fluid port B3, and oil-return groove T is by drainback passage T1, oil circuit T2 communicates with oil return inlet T 3.
The working principle of load-sensitive hydraulic transformer is in the present embodiment:
Constant pressure network generally comprises the high pressure fuel source of constant pressure and the low pressure oil sources that is connected with fuel tank.The constant voltage inlet opening A of load-sensitive hydraulic transformer connects the constant pressure network high pressure fuel source, and transformation delivery outlet B connects load, and low pressure or fuel tank interface T connect constant pressure network low pressure oil sources.During the stable state of normal operation, the delivery pressure of load-sensitive hydraulic transformer is a little more than induced pressure, and the difference of delivery pressure and induced pressure is by adjustable spring 19 settings of load-sensitive valve, as is set as 1.5MPa.When induced pressure raise, when namely the L mouth pressure raise, the l1 mouth pressure increased, promote the 3-position 4-way load-sensitive valve and be in right position, this moment, hydraulic fluid port t1 was communicated with hydraulic fluid port k4, and hydraulic fluid port a1 is communicated with hydraulic fluid port k3, thereby drove thrust plate 4 rotations, so that transformation delivery outlet B pressure raises, be higher than induced pressure 1.5MPa until delivery pressure is elevated to, load-sensitive valve core 18 is replied metas at this moment, and hydraulic fluid port k3 and k4 close, thrust plate 4 stops operating, and it is stable that delivery pressure keeps.When induced pressure reduced, when namely the L mouth pressure reduced, the l1 mouth pressure decreased, promote the 3-position 4-way load-sensitive valve and be in left position, this moment, hydraulic fluid port t1 was communicated with hydraulic fluid port k3, and hydraulic fluid port a1 is communicated with hydraulic fluid port k4, thereby drove thrust plate 4 rotations, so that transformation delivery outlet B pressure decreased, be higher than induced pressure 1.5MPa until delivery pressure is reduced to, load-sensitive valve core 18 is replied metas at this moment, and hydraulic fluid port k3 and k4 close, thrust plate 4 stops operating, and it is stable that delivery pressure keeps.
In sum, above is preferred embodiment of the present utility model only, is not be used to limiting protection domain of the present utility model.All within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (3)
1. a load-sensitive hydraulic transformer is characterized in that: the hydraulic transformer, the load-sensitive control valve that comprise oil hydraulic cylinder control; Described oil hydraulic cylinder for the control hydraulic transformer is provided with k1, two hydraulic fluid ports of k2; Described load-sensitive control valve is a 3-position 4-way hydraulicchange-over valve, be provided with four hydraulic fluid port a1, t1, k3, k4 and two liquid controling cavity b1 and l1, hydraulic fluid port a1 is communicated with the constant voltage inlet opening A of hydraulic transformer, liquid controling cavity b1 is communicated with the delivery pressure mouth B of hydraulic transformer, hydraulic fluid port t1 is communicated with fuel tank interface T, hydraulic fluid port k3 is communicated with the control port k1 of the oil hydraulic cylinder of hydraulic transformer, and hydraulic fluid port k4 is communicated with the control port k2 of the oil hydraulic cylinder of hydraulic transformer, and liquid controling cavity l1 is communicated with loading interfaces L.
2. load-sensitive hydraulic transformer according to claim 1, it is characterized in that: described load-sensitive control valve is comprised of bonnet, valve body, valve pocket, spool, adjustable spring, protecgulum, spring adjustable lever, and liquid controling cavity l1 one side of spool is provided with adjustable spring.
3. load-sensitive hydraulic transformer according to claim 1 is characterized in that: described oil hydraulic cylinder for the control hydraulic transformer is double-acting straight line oil hydraulic cylinder or oscillating motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220483307 CN202833356U (en) | 2012-09-21 | 2012-09-21 | Load-sensitive hydraulic pressure transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220483307 CN202833356U (en) | 2012-09-21 | 2012-09-21 | Load-sensitive hydraulic pressure transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202833356U true CN202833356U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220483307 Expired - Fee Related CN202833356U (en) | 2012-09-21 | 2012-09-21 | Load-sensitive hydraulic pressure transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202833356U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878124A (en) * | 2012-09-21 | 2013-01-16 | 中国船舶重工集团公司第七一九研究所 | Load-sensitive hydraulic transformer |
-
2012
- 2012-09-21 CN CN 201220483307 patent/CN202833356U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878124A (en) * | 2012-09-21 | 2013-01-16 | 中国船舶重工集团公司第七一九研究所 | Load-sensitive hydraulic transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20140921 |
|
| EXPY | Termination of patent right or utility model |