CN201896601U - Multi-channel load sensing hydraulic transmission system of cement truck for well cementation - Google Patents
Multi-channel load sensing hydraulic transmission system of cement truck for well cementation Download PDFInfo
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- CN201896601U CN201896601U CN201020619100XU CN201020619100U CN201896601U CN 201896601 U CN201896601 U CN 201896601U CN 201020619100X U CN201020619100X U CN 201020619100XU CN 201020619100 U CN201020619100 U CN 201020619100U CN 201896601 U CN201896601 U CN 201896601U
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Abstract
The utility model provides a multi-channel load sensing hydraulic transmission system of cement truck for well cementation. An oil pump adopts a load sensing oil pump, a motor feedbacks load changes to the load sensing oil pump through a load feedback pipeline during operation, and the flow and pressure are adjusted automatically through the load sensing oil pump according to the pressure of a load. Load sensing and maximum pressure compensation variation are combined. By adopting the load sensing, the flow and the pressure of the pump can be matched with system requirements, and the loss of waste power can be minimized. Meanwhile, one oil pump can provide power for multiple motors, power sources can be saved and fault points can be reduced.
Description
Technical field
The utility model relates to the responsive Hydraulic Power Transmission System of a kind of cementing concrete truck multichannel loading.
Background technology
At present, most of cementing concrete truck power that use in the oil field are provided by former chassis or motor, thereby driving pump drives the motor operation, the clarified water pump hydraulic motor, the recirculation pump hydraulic motor, the agitator hydraulic motor each need an oil pump that power is provided, cause power source too much, the control piper complexity is prone to fault, generally comes the output flow and the pressure of Adjustment System by choke valve, but this control mode strengthens oil pump capacity, choke valve dams system pressure is raise, thereby loss power also can make system's heating, and Hydraulic Elements are in for a long time also can reduction of service life in the high pressure.
The utility model content
The technical problem that the utility model solves: provide a kind of cementing concrete truck multichannel loading responsive Hydraulic Power Transmission System, have load-sensitive and maximum pressure compensation variable concurrently, load-sensitive is complementary the flow of pump and pressure and system requirements, minimum is reduced in the loss of useless power, simultaneously, clarified water pump hydraulic motor in the hydraulic power system, recirculation pump hydraulic motor, agitator hydraulic motor only need an oil pump that power is provided.Save power source, reduce the fault point.
The technical solution adopted in the utility model: the responsive Hydraulic Power Transmission System of cementing concrete truck multichannel loading, the oil pump of described system is the load-sensitive oil pump, during motor operations load variation amount is fed back to the load-sensitive oil pump by the load feedback pipeline, the load-sensitive oil pump is adjusted flow and pressure automatically according to the pressure of load.
Described load-sensitive hydraulic oil pump provides power separately for clarified water pump hydraulic motor, recirculation pump hydraulic motor and agitator hydraulic motor in the dynamical system or simultaneously for clarified water pump hydraulic motor, recirculation pump hydraulic motor and agitator hydraulic motor provide power, motor is controlled three valves and is connected with oil pump load-sensitive connector by the load feedback pipeline.
Load signal is connected to the spring cavity end of load-sensitive spool by the oil pump load-sensitive connector of load-sensitive oil pump, telescopic action by the load-sensitive spring is in the load-sensitive spool, the load-sensitive spool is connected with the double acting servo piston, and the double acting servo piston is connected with pump oil piston.
Described load-sensitive spool is made of responsive spool I and responsive spool II, described load-sensitive spring is made of responsive spring I and responsive spring II and both are set on responsive spool I and the responsive spool II, and the spring cavity end of described responsive spool I is connected by oil pump load-sensitive connector with load signal from system.
The area ratio of described double acting servo piston is 4: 1, and its minor diameter is connected the output pressure of bearing pump with responsive spool I, and its major diameter connects the restriction of responsive spool II.
The utility model advantage compared with prior art:
1, a plurality of motors only need an oil pump that power is provided, and save power source, reduce the fault point;
2, the flow of pump and pressure and system requirements are complementary, so there is not too much consumed power;
3, load hour, pressure reduces thereupon, and calorific value also reduces, and prolongs component life.
Description of drawings
Fig. 1 is the utility model control principle structural representation.
Fig. 2 is an oil pump theory structure schematic diagram of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing 1,2 a kind of embodiment of the present utility model is described.
The responsive Hydraulic Power Transmission System of cementing concrete truck multichannel loading, clarified water pump hydraulic motor 11 in the dynamical system, recirculation pump hydraulic motor 12, load-sensitive hydraulic oil pump 14 of 13 needs of agitator hydraulic motor provides power, load-sensitive hydraulic oil pump 14 can be controlled a single motor, also can control a plurality of motors simultaneously, motor is controlled three valves 15 and is connected with oil pump load-sensitive connector 1 by load feedback pipeline 16, thereby load-sensitive hydraulic oil pump 14 is adjusted flow and pressure automatically according to load variation amount.
Load signal is connected to the spring cavity end of load-sensitive spool by load-sensitive connector 1, telescopic action by the load-sensitive spring is in the load-sensitive spool, the load-sensitive spool is connected with double acting servo piston 5, and double acting servo piston 5 is connected with pump oil piston 8; The load-sensitive spool is made of responsive spool I3 and responsive spool II4, the load-sensitive spring is made of responsive spring I6 and responsive spring II7 and both are set on responsive spool I3 and the responsive spool II4, and the spring cavity end 2 of responsive spool I3 is connected by load-sensitive connector 1 with load signal from system.The area ratio of double acting servo piston 5 is 4: 1, and its minor diameter is connected the output pressure of bearing pump with responsive spool I3, and its major diameter connects the restriction 10 of responsive spool II4.
What load-sensitive hydraulic oil pump of the present utility model 14 adopted is variable pump, the ability that output flow changes from zero to maximum pump discharge.The flow size that produces depends on the stroke of pump oil piston 8, pump oil piston 8 strokes are determined by the position of swash plate 9, when swash plate 9 is in an angled position, plunger is forced to pass in and out reciprocating in cylinder barrel, the fluid discharge capacity has just produced, the angle of swash plate 9 is big more, the stroke of plunger is just big more, all controls all are intended to determine the correct location of swash plate 9 pivot angles, the position of swash plate 9 is controlled by double acting servo piston 5, double acting servo piston 5 has 4: 1 area ratio, minor diameter connects the output pressure of pump, major diameter connects load-sensitive spool II4 restriction, when double acting servo piston 5 pressure at two ends are identical, swash plate 9 is swung towards zero delivery, POF reduces up to zero, when the pump output pressure increases to when being enough to overcome the pressure reduction at double acting servo piston 5 two ends, double acting servo piston 5 promotes swash plate 9 makes pump that flow output be arranged, load-sensitive spool II4 can change the pressure at double acting servo piston 5 major diameter places, causes swash plate 9 pivot angles to change the purpose that finally reaches the output flow that changes pump.When requiring flow to strengthen or reducing, load-sensitive spool sensitive valve core I3 increases the plunger of driving pump stroke or reduces stroke, maintenance system pressure reduction is constant, when the rotating speed of pump improves or reduces, load-sensitive spool I3 reduces the plunger of driving pump stroke or increases stroke, again keep pressure reduction constant, keep flow system flow constant.
Claims (5)
1. the responsive Hydraulic Power Transmission System of cementing concrete truck multichannel loading, it is characterized in that: the oil pump of described system is load-sensitive oil pump (14), during motor operations load variation amount is fed back to load-sensitive oil pump (14) by load feedback pipeline (16), load-sensitive oil pump (14) is adjusted flow and pressure automatically according to the pressure of load.
2. the responsive Hydraulic Power Transmission System of cementing concrete truck multichannel loading according to claim 1, it is characterized in that: described load-sensitive hydraulic oil pump (14) provides power separately for clarified water pump hydraulic motor (11), recirculation pump hydraulic motor (12) and agitator hydraulic motor (13) in the dynamical system or simultaneously for clarified water pump hydraulic motor (11), recirculation pump hydraulic motor (12) and agitator hydraulic motor (13) provide power, motor is controlled three valves (15) and is connected with oil pump load-sensitive connector (1) by load feedback pipeline (16).
3. the responsive Hydraulic Power Transmission System of cementing concrete truck multichannel loading according to claim 1 and 2, it is characterized in that: load signal is connected to the spring cavity end of load-sensitive spool by the oil pump load-sensitive connector (1) of load-sensitive oil pump (14), telescopic action by the load-sensitive spring is in the load-sensitive spool, the load-sensitive spool is connected with double acting servo piston (5), and double acting servo piston (5) is connected with pump oil piston (8).
4. the responsive Hydraulic Power Transmission System of cementing concrete truck multichannel loading according to claim 3, it is characterized in that: described load-sensitive spool is made of responsive spool I (3) and responsive spool II (4), described load-sensitive spring is made of responsive spring I (6) and responsive spring II (7) and both are set on responsive spool I (3) and the responsive spool II (4), and the spring cavity end (2) of described responsive spool I (3) is connected by oil pump load-sensitive connector (1) with load signal from system.
5. the responsive Hydraulic Power Transmission System of cementing concrete truck multichannel loading according to claim 4, it is characterized in that: the area ratio of described double acting servo piston (5) is 4: 1, its minor diameter is connected the output pressure of bearing pump with responsive spool I (3), its major diameter connects the restriction (10) of responsive spool II (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020619100XU CN201896601U (en) | 2010-11-23 | 2010-11-23 | Multi-channel load sensing hydraulic transmission system of cement truck for well cementation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020619100XU CN201896601U (en) | 2010-11-23 | 2010-11-23 | Multi-channel load sensing hydraulic transmission system of cement truck for well cementation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201896601U true CN201896601U (en) | 2011-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020619100XU Expired - Fee Related CN201896601U (en) | 2010-11-23 | 2010-11-23 | Multi-channel load sensing hydraulic transmission system of cement truck for well cementation |
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| CN (1) | CN201896601U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434507A (en) * | 2011-11-11 | 2012-05-02 | 中联重科股份有限公司 | Engineering machinery and load sensitivity control system and control method thereof |
| CN102720710A (en) * | 2012-06-26 | 2012-10-10 | 中联重科股份有限公司 | Hydraulic system, control method of hydraulic system, and engineering machine |
| CN104619996A (en) * | 2012-11-27 | 2015-05-13 | 日立建机株式会社 | Hydraulic drive device of electric hydraulic machinery |
-
2010
- 2010-11-23 CN CN201020619100XU patent/CN201896601U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434507A (en) * | 2011-11-11 | 2012-05-02 | 中联重科股份有限公司 | Engineering machinery and load sensitivity control system and control method thereof |
| CN102434507B (en) * | 2011-11-11 | 2014-07-09 | 中联重科股份有限公司 | Engineering machinery and load sensitivity control system and control method thereof |
| CN102720710A (en) * | 2012-06-26 | 2012-10-10 | 中联重科股份有限公司 | Hydraulic system, control method of hydraulic system, and engineering machine |
| CN102720710B (en) * | 2012-06-26 | 2015-09-16 | 中联重科股份有限公司 | Hydraulic system, control method of hydraulic system, and engineering machine |
| CN104619996A (en) * | 2012-11-27 | 2015-05-13 | 日立建机株式会社 | Hydraulic drive device of electric hydraulic machinery |
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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: 20110713 Termination date: 20151123 |