CN101968028A - Digital type assignment and regulating mechanism of low-speed and large-torsion hydraulic motor with crankshaft connecting rod - Google Patents
Digital type assignment and regulating mechanism of low-speed and large-torsion hydraulic motor with crankshaft connecting rod Download PDFInfo
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- CN101968028A CN101968028A CN2010102839094A CN201010283909A CN101968028A CN 101968028 A CN101968028 A CN 101968028A CN 2010102839094 A CN2010102839094 A CN 2010102839094A CN 201010283909 A CN201010283909 A CN 201010283909A CN 101968028 A CN101968028 A CN 101968028A
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Abstract
The invention relates to a digital type assignment and regulating mechanism of a low-speed and large-torsion hydraulic motor with a crankshaft connecting rod, which is characterized in that high-speed electromagnetic switch valves are respectively arranged on the two perpendicular surfaces of an assignment valve block body; an assignment connecting shaft is connected with an angle encoder through an elastic coupling; the angle encoder is connected with an encoder flange; the encoder flange is connected with the assignment valve block body; an angular contact ball bearing, the encoder flange, the elastic coupling, a framework oil seal and the assignment connecting shaft are arranged on the assignment valve block body in a coaxial mode; an electronic controller is connected with the angle encoder and receives the signal of the angle encoder as an input signal; and the electronic controller is connected with the high-speed electromagnetic switch valves and outputs a PWM (Pulse Width Modulation) signal for driving the high-speed electromagnetic switch valves. The invention adopts the high-speed electromagnetic switch valves substitute for the traditional assignment shafts or assignment disks to form a digital type assignment and regulating device so as to fundamentally overcome the inherent defects of low mechanical efficiency and volumetric efficiency of a mechanical position control assignment mode and enhance the control and regulating characteristics of a hydraulic motor.
Description
Technical field
What the present invention relates to is a kind of flow and speed regulating mechanism of mechanical engineering technical field oil hydraulic motor, specifically, is digital flow of a kind of crankshaft-link rod low speed high torque hydraulic motor and speed regulating mechanism.
Background technique
The flow mode of present widely used crankshaft connecting rod type low-speed high-torque hydraulic motor is divided into two kinds, and radial axle flow-distribution mechanism and valve plate distribution mechanism in fact all belong to mechanical location control flow mode; And their structure is all very complicated, size requirement precision height, and mechanical processing difficulty is big, can't realize the speed regulation of oil hydraulic motor.
Find by prior art documents, Chinese patent publication number CN2079226, open day is on June 19th, 1991, this patent name is: a kind of ultrahigh-pressure valve type fluid-distributing axial plunger pump.Chinese patent publication number CN2221111, open day is on February 28th, 1996, this patent name is: novel valve current allocating type high pressure axial plunger pump.These two patents can't directly be applied on the crankshaft connecting rod type low-speed high-torque hydraulic motor, because crankshaft connecting rod type low-speed high-torque hydraulic motor is a radial plunger type motor.Chinese patent publication number CN2361871, open day is on February 2nd, 2000, this patent name is: valve flow roller plunger pump, this plunger pump replaces bent axle commonly used with the combined eccentricity axle, replace connecting rod commonly used with roller, no longer be the crankshaft connecting rod type structure, this patent can't directly be applied on the crankshaft connecting rod type low-speed high-torque hydraulic motor.Chinese patent publication number CN1800634, open day is on July 12nd, 2006, this patent name is: the crankshaft connecting rod type low-speed high-torque hydraulic motor electric control valve flow-distribution mechanism.This patent has proposed a kind of principle scheme that adopts the high-speed solenoid valve flow-distribution mechanism, use be two-position three-way valve, on position probing, adopted ten inductance approach switches.
In further literature search, find identical with theme of the present invention or similar bibliographical information as yet.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, digital flow of a kind of crankshaft connecting rod type low-speed high-torque hydraulic motor and speed regulating mechanism are provided.The present invention adopts the high-speed solenoid valve group to replace the digital flow and the arrangements for speed regulation of traditional pintle or thrust plate formation, fundamentally overcome mechanical location control flow mode mechanical efficiency and the low inherent defect of volumetric efficiency, and improve the control and the control characteristic of oil hydraulic motor.
The present invention is achieved by the following technical solutions:
The present invention includes: ten high-speed solenoid valves, electronic controller (ECU), angular encoder, encoder flange, elastic coupling flexible coupling, flow-distributing valve block body, angular contact ball bearing, flow coupling shaft.High-speed solenoid valve is separately positioned on the flow-distributing valve block body, the flow coupling shaft is connected by elastic coupling flexible coupling with angular encoder, angular encoder is connected with the encoder flange, the encoder flange is connected with the flow-distributing valve block body, angular contact ball bearing with encoder flange, elastic coupling flexible coupling, outside framework oil seal, the flow coupling shaft is coaxial is arranged on the flow-distributing valve piece, electronic controller is connected with angular encoder and accepts the angular encoder signal as input signal, and electronic controller is connected and exports the pwm signal of driving high-speed solenoid valve with high-speed solenoid valve.
Described high-speed solenoid valve is two two logical high-speed solenoid valves, and ten two two logical two of high-speed solenoid valves are one group, on orthogonal two faces that are arranged on the flow-distributing valve block body.Described two two logical high-speed solenoid valves are not when having electrical signal, and valve port disconnects, and when electrical signal was arranged, valve port was communicated with.Described angular encoder is an absolute value type angular encoder.Outside framework oil seal is set as sealing component between the two at elastic coupling flexible coupling and angular contact ball bearing.
The present invention uses an absolute value type angular encoder to detect the corner of oil hydraulic motor bent axle, and this angular encoder is installed on the flow-distributing valve block body with its accessory.Electronic controller decides the on off operating mode of ten high-speed solenoid valves according to corner that angular encoder is surveyed, thereby controls the oil-feed and the oil return of each plunger cavity of oil hydraulic motor regularly.The flow-distributing valve block body is connected with the low-speed big torque motor body, and the turnover runner on the flow-distributing valve block body is communicated with respectively with the high pressure filler opening of oil supply system and low pressure return opening.
The present invention is applied to crankshaft connecting rod type low-speed high-torque hydraulic motor with the principle of common rail for diesel engine formula electric control fuel oil jet system, the integrated electronic control technique, sensing detection technology and high-speed solenoid valve technology design a kind of use microcontroller or computer implemented digital flow and speed regulating mechanism, thereby make crankshaft connecting rod type low-speed high-torque hydraulic motor be transformed into high-speed solenoid valve control flow mode by mechanical location control flow mode, fundamentally overcome mechanical location control flow mode mechanical efficiency and the low inherent defect of volumetric efficiency, and improve the control and the control characteristic of oil hydraulic motor.
The invention has the beneficial effects as follows: this digital flow and speed regulating mechanism collection microcontroller technology, modern digital sensing detection technology and high-speed solenoid valve control technique are, make traditional crankshaft connecting rod type low-speed high-torque hydraulic motor be transformed into digital flow mode by mechanical location control flow mode, simplify the structure and processing technology, and, this flow-distribution mechanism has high volumetric efficiency and mechanical efficiency, reached energy-conservation purpose, in addition, power-up sequence by control high-speed solenoid valve group and carry out PWM control, can be easy to realize the clockwise and anticlockwise of oil hydraulic motor and the adjusting of rotating speed, increase the use flexibility and the application area of oil hydraulic motor.
Description of drawings
Fig. 1 is a principle of the invention schematic representation;
Fig. 2 is the embodiment of the invention one a side structure schematic representation;
Fig. 3 is an embodiment of the invention opposite side structural representation;
Fig. 4 is an embodiment of the invention structural representation;
Wherein: 1-10 high-speed solenoid valve, 11 hydraulic stations, 12 electronic controllers (ECU), 13 guide lines, 14-18 low speed high torque hydraulic motor plunger cavity, 19 angular encoders, 20 encoder flanges, 21 elastic coupling flexible couplings, 22 flow-distributing valve block bodies, 23 outside framework oil seals, 24 angular contact ball bearings, 25 flow coupling shafts.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: following examples have provided detailed mode of execution and process being to implement under the prerequisite with the technical solution of the present invention, but protection scope of the present invention is not limited to following embodiment.
Embodiment
Shown in Fig. 1-4, present embodiment comprises: ten high-speed solenoid valves (1-10), electronic controller (12), angular encoder (19), encoder flange (20), elastic coupling flexible coupling (21), flow-distributing valve block body (22), outside framework oil seal (23), angular contact ball bearing (24), flow coupling shaft (25), high-speed solenoid valve is separately positioned on two vertical surfaces of flow-distributing valve block body, the flow coupling shaft is connected by elastic coupling flexible coupling with angular encoder, angular encoder is connected with the encoder flange, the encoder flange is connected with the flow-distributing valve block body, angular contact ball bearing and encoder flange, elastic coupling flexible coupling, outside framework oil seal, the flow coupling shaft is coaxial to be arranged on the flow-distributing valve piece, electronic controller is connected with the absolute value angular encoder and accepts the angular encoder signal as input signal, and electronic controller is connected and exports the pwm signal of driving high-speed solenoid valve with high-speed solenoid valve.
Described high-speed solenoid valve is two two logical structural types, and ten two two logical two of high-speed solenoid valves are one group, on orthogonal two faces that are arranged on the flow-distributing valve block body.The oil hydraulic motor plunger cavity oil inlet and oil return of a correspondence of each group high-speed solenoid valve control.Wherein, high-speed solenoid valve 1,2 control plunger cavity 14 (I); High-speed solenoid valve 3,4 control plunger cavities 18 (II); High- speed solenoid valve 5,6 control plunger cavities 17 (III); High-speed solenoid valve 7,8 control plunger cavities 16 (IV); High- speed solenoid valve 9,10 control plunger cavities 15 (V); And, high-speed solenoid valve 1,3, the corresponding plunger cavity oil-feed of 5,7,9 controls, high-speed solenoid valve 2,4, the corresponding plunger cavity oil return of 6,8,10 controls.
Described two two logical high-speed solenoid valves are not when having electrical signal, and valve port disconnects, and when electrical signal was arranged, valve port was communicated with.Described angular encoder is an absolute value type angular encoder.Outside framework oil seal is set as sealing component between the two at elastic coupling flexible coupling and angular contact ball bearing.
As shown in Figure 1, the working principle that has shown present embodiment.
Crankshaft angles and plunger cavity advance, the oil return relation, the relation of crankshaft angles and two two logical high-speed solenoid valve power on/off states is as follows: the regulation top dead center is when I plunger cavity position, angle is decided to be initial zero degree, and counterclockwise angle increases, and scope is 0～360 °.When the oil hydraulic motor bent axle counterclockwise rotates, plunger cavity I, II, the logical high pressure oil (oil-feed) of III, plunger cavity IV, V lead to low pressure oil (oil return).Because the even five equilibriums of five plunger radials distribute, so can analyze, set up that oil hydraulic motor crank angle and plunger cavity advance, the relation between oil return from 0～72 ° angle range, the analysis classes of other corner angular interval is seemingly.
By analyzing, now obtain following relation:
(1) angle is 0 °, and the I chamber is in upper dead center position.
(2) 0＜angles＜36 ° are rotated counterclockwise, and angle is in this interval.According to upper dead center---the lower dead centre line, the oil hydraulic motor zone is divided into zone of high pressure and low pressure area, plunger cavity I, II, III still are in the zone of high pressure, and this moment, plunger cavity III did not enter low pressure area.So the oil inlet and oil return state still keeps above-mentioned state.
(3) angle is 36 °, and plunger III is in lower dead point position, promptly is on zone of high pressure and the low pressure area separatrix.
(4) 36 °＜angle＜72 °, upper dead center---the lower dead centre line is crossed plunger cavity III, and plunger cavity III enters low pressure area.At this moment, plunger cavity I, II are in the zone of high pressure, oil-feed; Plunger cavity III, IV, V are in low pressure area, oil return.
(5) angle is 72 °, and plunger cavity V is in upper dead center position, is about to enter the zone of high pressure.Below enter similar cycle.
The label of the high-speed solenoid valve of control plunger cavity I, II, III, IV, V is 1～10, valve 1,2 control plunger I, and wherein valve 1 control oil-feed is called oiling valve; Valve 2 control oil returns are called scavenger valve, and other are similar.So oiling valve number is 1,3,5,7 and 9, scavenger valve number is 2,4,6,8 and 10.During the valve energising, oil circuit is opened, and during the valve outage, oil circuit is closed.
In the time of can obtaining the oil hydraulic motor bent axle thus and counterclockwise rotate, oil hydraulic motor crank angle and plunger cavity advance, the relation between oil return, shown in table 2-1.
Table 2-1 is rotated counterclockwise the flow relation table
In like manner analyze, in the time of also can obtaining the rotation of oil hydraulic motor bent axle clockwise direction, oil hydraulic motor shaft rotary corner and plunger cavity advance, the relation between oil return, as showing shown in the 2-2.
Table 2-2 turns clockwise the flow relation table
Present embodiment just can guarantee that according to table 2-1, the resulting relation of table 2-2 the power-up sequence of high-speed solenoid valve group is correct, thereby realizes the correct flow of oil hydraulic motor.Like this, the sense of rotation of oil hydraulic motor can change easily by the flow order, does not need other commutation element or changes oil hydraulic motor oil inlet and oil return road; In addition,, can change the flow that enters the oil hydraulic motor plunger cavity, and then change the rotating speed of oil hydraulic motor by regulating the dutycycle of high-speed solenoid valve control signal.
Claims (5)
1. digital flow of crankshaft-link rod low speed high torque hydraulic motor and speed regulating mechanism, it is characterized in that, comprise: ten high-speed solenoid valves, electronic controller, angular encoder, the encoder flange, elastic coupling flexible coupling, the flow-distributing valve block body, angular contact ball bearing, the flow coupling shaft, high-speed solenoid valve is separately positioned on two vertical surfaces of flow-distributing valve block body, the flow coupling shaft is connected by elastic coupling flexible coupling with angular encoder, angular encoder is connected with the encoder flange, the encoder flange is connected with the flow-distributing valve block body, angular contact ball bearing and encoder flange, elastic coupling flexible coupling, outside framework oil seal, the flow coupling shaft is coaxial to be arranged on the flow-distributing valve piece, electronic controller is connected with angular encoder and accepts the angular encoder signal as input signal, and electronic controller is connected and exports the pwm signal of driving high-speed solenoid valve with high-speed solenoid valve.
2. digital flow of crankshaft-link rod low speed high torque hydraulic motor according to claim 1 and speed regulating mechanism, it is characterized in that, described high-speed solenoid valve is two two logical high-speed solenoid valves, ten two two logical two of high-speed solenoid valves are one group, on orthogonal two faces that are arranged on the flow-distributing valve block body.
3. digital flow of crankshaft-link rod low speed high torque hydraulic motor according to claim 2 and speed regulating mechanism is characterized in that, described two two logical high-speed solenoid valves are not when having electrical signal, and valve port disconnects, and when electrical signal was arranged, valve port was communicated with.
4. digital flow of crankshaft-link rod low speed high torque hydraulic motor according to claim 1 and speed regulating mechanism is characterized in that, described angular encoder is an absolute value type angular encoder.
5. digital flow of crankshaft-link rod low speed high torque hydraulic motor according to claim 1 and speed regulating mechanism is characterized in that, outside framework oil seal are set as sealing component between the two at elastic coupling flexible coupling and angular contact ball bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102839094A CN101968028A (en) | 2010-09-17 | 2010-09-17 | Digital type assignment and regulating mechanism of low-speed and large-torsion hydraulic motor with crankshaft connecting rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102839094A CN101968028A (en) | 2010-09-17 | 2010-09-17 | Digital type assignment and regulating mechanism of low-speed and large-torsion hydraulic motor with crankshaft connecting rod |
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| CN101968028A true CN101968028A (en) | 2011-02-09 |
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| CN2010102839094A Pending CN101968028A (en) | 2010-09-17 | 2010-09-17 | Digital type assignment and regulating mechanism of low-speed and large-torsion hydraulic motor with crankshaft connecting rod |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072079A (en) * | 2010-12-18 | 2011-05-25 | 上海交通大学 | Speed regulation type hydraulic motor based on digital distribution |
| CN102661236A (en) * | 2012-05-03 | 2012-09-12 | 肇庆市志成气动有限公司 | Digital distribution and speed regulation based hydraulic motor |
| CN102748337A (en) * | 2012-07-19 | 2012-10-24 | 意宁液压股份有限公司 | Digital-control cartridge valve type distributor |
| CN104564854A (en) * | 2014-12-26 | 2015-04-29 | 浙江大学 | Multi-executer heavy load digital hydraulic loop based on high-voltage common rail cabin |
| CN110541788A (en) * | 2019-09-30 | 2019-12-06 | 张尉华 | electric control hydraulic motor |
-
2010
- 2010-09-17 CN CN2010102839094A patent/CN101968028A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072079A (en) * | 2010-12-18 | 2011-05-25 | 上海交通大学 | Speed regulation type hydraulic motor based on digital distribution |
| CN102072079B (en) * | 2010-12-18 | 2013-05-29 | 上海交通大学 | Speed regulation type hydraulic motor based on digital distribution |
| CN102661236A (en) * | 2012-05-03 | 2012-09-12 | 肇庆市志成气动有限公司 | Digital distribution and speed regulation based hydraulic motor |
| CN102748337A (en) * | 2012-07-19 | 2012-10-24 | 意宁液压股份有限公司 | Digital-control cartridge valve type distributor |
| CN102748337B (en) * | 2012-07-19 | 2015-10-28 | 意宁液压股份有限公司 | Digital-control cartridge valve type distributor |
| CN104564854A (en) * | 2014-12-26 | 2015-04-29 | 浙江大学 | Multi-executer heavy load digital hydraulic loop based on high-voltage common rail cabin |
| CN110541788A (en) * | 2019-09-30 | 2019-12-06 | 张尉华 | electric control hydraulic motor |
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Application publication date: 20110209 |