CN102072079A - Speed regulation type hydraulic motor based on digital distribution - Google Patents
Speed regulation type hydraulic motor based on digital distribution Download PDFInfo
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- CN102072079A CN102072079A CN 201010595894 CN201010595894A CN102072079A CN 102072079 A CN102072079 A CN 102072079A CN 201010595894 CN201010595894 CN 201010595894 CN 201010595894 A CN201010595894 A CN 201010595894A CN 102072079 A CN102072079 A CN 102072079A
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- solenoid valve
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- hydraulic motor
- speed solenoid
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Abstract
A speed regulation type hydraulic motor based on digital distribution which belongs to the technical field of hydraulic motors comprises high-speed electromagnetic switch valves, an electronic control unit, an angle coder, a coder support, an elastic coupling, plunger cavity end caps, a motor end face cover plate, an angular contact ball bearing and a distribution connecting shaft, wherein each two of the ten high-speed electromagnetic switch valves form a group to be arranged on each one of the five plunger cavity end caps, the distribution connecting shaft and the angle coder are respectively connected with the elastic coupling, the angle coder is arranged on the coder support and is connected with the motor end face cover plate, the motor end face cover plate is fixedly arranged on a hydraulic motor body, the input end of the electronic control unit is connected with the angle coder and receives an angle signal, and the output end of the electronic control unit is connected with the high-speed electromagnetic switch valves and outputs a PWM (pulse-width modulation) signal. The speed regulation type hydraulic motor based on digital distribution provided by the invention integrates a distribution function and a speed regulation function, and adopts the high-speed electromagnetic switch valves distributed on the plunger cavity end caps to replace the traditional pintle valve or the traditional thrust plate, so that digital distribution and speed regulation can be formed.
Description
Technical field
What the present invention relates to is a kind of device of oil hydraulic motor technical field, specifically is a kind of speed adjusting type oil hydraulic motor based on digital flow.
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 and valve plate distribution 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.The flow-distribution mechanism that adopts two-position three-way valve can not promptly stop in the oil hydraulic motor running not adding under the situation of braking device, is unfavorable for the protection of oil hydraulic motor.In addition, adopt inductance approach switch on the position probing, the angle of bent axle can not accurately be obtained so, brings difficulty to the realization of flow table.
Summary of the invention
The present invention is directed to the prior art above shortcomings, a kind of speed adjusting type oil hydraulic motor based on digital flow is provided, collection flow and speed-regulating function one adopt the high-speed solenoid valve that is distributed on the plunger cavity end cap to replace traditional pintle or thrust plate, the digital flow and the speed governing of formation.
The present invention is achieved by the following technical solutions, the present invention includes: high-speed solenoid valve, electronic control unit, angular encoder, the encoder support, elastic coupling flexible coupling, the plunger cavity end cap, the motor-end surface cover, angular contact ball bearing and flow coupling shaft, wherein: high-speed solenoid valve with two be one group totally ten be arranged at five plunger end respectively and cover, the flow coupling shaft is connected with elastic coupling flexible coupling respectively with angular encoder, angular encoder is arranged on the encoder support and with the motor-end surface cover and is connected, the motor-end surface cover is fixedly set in the oil hydraulic motor body, the input end of electronic control unit is connected with angular encoder and the receiving angle signal, and the output terminal of electronic control unit is connected with high-speed solenoid valve and output pwm signal.
Described high-speed solenoid valve is two two logical high-speed solenoid valves, and conducting when charged is opened in these two two logical high-speed solenoid valve outages often.
The oil hydraulic motor plunger cavity oil inlet and oil return of a correspondence of each group high-speed solenoid valve control, wherein: first and second high-speed solenoid valves are controlled first plunger cavity respectively, the 3rd, the 4th high-speed solenoid valve is controlled second plunger cavity respectively, the 5th, the 6th high-speed solenoid valve is controlled the 3rd plunger cavity respectively, the 7th, the 8th high-speed solenoid valve is controlled the 4th plunger cavity respectively, the 9th, the tenth high-speed solenoid valve is controlled the 5th plunger cavity respectively, first, the 3rd, the 5th, the the 7th and the 9th high-speed solenoid valve is controlled corresponding plunger cavity oil-feed, second, the 4th, the 6th, the the 8th and the tenth high-speed solenoid valve is controlled corresponding plunger cavity oil return.
Described angular encoder is the detection that absolute value type angular encoder is realized the oil hydraulic motor crank angle, electronic control unit realizes controlling regularly the oil-feed and the oil return of each plunger cavity of oil hydraulic motor by the on off operating mode of angle signal decision high-speed solenoid valve.
Described motor-end surface cover is communicated with respectively with the high pressure filler opening and the low pressure return opening of oil supply system by main turnover runner.
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 governing oil hydraulic motor, 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 novel hydraulic motor 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 the embodiment of the present invention schematic representation;
Fig. 2 is plunger cavity end cap of the present invention and end face cover plate partial enlarged drawing;
Wherein: 1-10 high-speed solenoid valve, 11 hydraulic stations, 12 electronic control units, 13 guide lines, 14-18 plunger cavity, 19 angular encoders, 20 encoder supports, 21 elastic coupling flexible couplings, 22 motor-end surface covers, 23 flow coupling shafts, 24 angular contact ball bearings, 25 plunger cavity end caps, 26 main filler openings, 27 main return openings, 28 oil return runners, 29 oil-feed runners, 30 motor bodies, 31 plunger cavity oil-feed runners, 32 switch valve return openings, 33 switch valve filler openings.
Embodiment
Below embodiments of the invention are elaborated, present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As depicted in figs. 1 and 2, present embodiment comprises: first to the tenth high-speed solenoid valve 1-10, electronic control unit 12, angular encoder 19, encoder support 20, elastic coupling flexible coupling 21, motor-end surface cover 22, flow coupling shaft 23, angular contact ball bearing 24 and plunger cavity end cap 25, wherein: first to the tenth high-speed solenoid valve 1-10 is one group with two and is arranged on respectively on 5 plunger cavity end caps 25, flow coupling shaft 23 is connected by elastic coupling flexible coupling 21 with angular encoder 19, angular encoder 19 is connected with encoder support 20, encoder support 20 is connected with motor-end surface cover 22, angular contact ball bearing 24 and encoder support 20, elastic coupling flexible coupling 21, flow coupling shaft 23 coaxial being arranged on the motor-end surface cover 22, electronic control unit 12 is connected with angular encoder 19 and accepts angle signal, and electronic control unit 12 is connected with first to the tenth high-speed solenoid valve 1-10 respectively and output pwm signal.
Shown in Fig. 2 a and Fig. 2 b, described high-speed solenoid valve 1-10 is two two logical high-speed solenoid valves, and ten two two logical two of high-speed solenoid valves are one group, are arranged on 5 plunger cavity end caps.The oil hydraulic motor plunger cavity oil inlet and oil return of a correspondence of each group high-speed solenoid valve control, wherein: first and second high-speed solenoid valves 1,2 control the first plunger cavity 14I respectively, the 3rd, the 4th high-speed solenoid valve 3,4 control the second plunger cavity 15II respectively, the 5th, the 6th high-speed solenoid valve 5,6 control the 3rd plunger cavity 16III respectively, the 7th, the 8th high-speed solenoid valve 7,8 control the 4th plunger cavity 17IV respectively, the 9th, the tenth high-speed solenoid valve 9,10 control the 5th plunger cavity 18V respectively, first, the 3rd, the 5th, the the 7th and the 9th high-speed solenoid valve 1,3,5,7, the corresponding plunger cavity oil-feed of 9 controls, second, the 4th, the 6th, the the 8th and the tenth high-speed solenoid valve 2,4,6,8, the corresponding plunger cavity oil return of 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.
This device carries out work in the following manner: with No. 18 plunger cavities is example, after high pressure oil comes out from hydraulic station, enter the main filler opening on the motor-end surface cover, arrive then with annular chamber that main filler opening is communicated with in, arrive the filler opening of high-speed solenoid valve 9 then by the oil-feed runner, if open switch valve this moment, fluid enters corresponding switch valve filler opening so, enters then in the corresponding plunger cavity; Otherwise when No. 18 plunger cavity oil returns were between the oil back region, fluid entered the oil return runner by the return opening of high-speed switch valve 10, arrived main return opening through the oil return annular chamber then, flowed back to fuel tank at last.
The motor of this structure is compared with former conventional motor, and plunger cavity end cap size has strengthened, and is used to install high-speed solenoid valve; The oil circuit that is communicated with plunger cavity on the motor body becomes two-way from 1 the tunnel; In addition, be communicated with main filler opening and return opening by the circular groove on the motor-end surface cover.
As shown in Figure 1, the regulation top dead center is when I plunger cavity position, and 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).The oil hydraulic motor of being studied belongs to the single-acting oil hydraulic motor, and motor rotates a circle, and five plungers are respectively done a to-and-fro motion.And the reciprocal angular interval size of each plunger cavity is identical, is 180 °, and just start angle is different with termination point.If the angular interval of plunger cavity oil-feed is called operation interval, in the time of can obtaining oil hydraulic motor so and be rotated counterclockwise, the operation interval table of five plunger cavities is as shown in table 1.
Table 1 is rotated counterclockwise plunger cavity operation interval table
| Plunger cavity number | Operation interval |
| I | 0°～180° |
| II | 288°～360°，0°～108° |
| III | 216°～360°，0°～36° |
| IV | 144°～324° |
| V | 72°～252° |
As can be seen from Table 1, for plunger cavity II and III, outwardly, operation interval has been divided into two.But because selected angular encoder is the absolute value formula, 360 ° corresponding with 0 ° is same position.Therefore, the operation interval of II and III plunger cavity remains continuous 180 °.This to-and-fro motion process with actual plunger cavity is consistent.
In like manner, in the time of can obtaining oil hydraulic motor and turn clockwise, the operation interval table of five plunger cavities, as shown in table 2.
The table 2 plunger cavity operation interval table that turns clockwise
| Plunger cavity number | Operation interval |
| I | 180°～360° |
| II | 108°～288° |
| III | 36°～216° |
| IV | 0°～144°，324°～360° |
| V | 252°～360°，0°～72° |
As can be seen from Table 2, the operation interval of each plunger cavity still is 180 °, but corresponding angle Origin And Destination is different with table 1.
Present embodiment just can guarantee that according to table 1, the resulting relation of table 2 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. speed adjusting type oil hydraulic motor based on digital flow, it is characterized in that, comprise: high-speed solenoid valve, electronic control unit, angular encoder, the encoder support, elastic coupling flexible coupling, the plunger cavity end cap, the motor-end surface cover, angular contact ball bearing and flow coupling shaft, wherein: high-speed solenoid valve with two be one group totally ten be arranged at five plunger end respectively and cover, the flow coupling shaft is connected with elastic coupling flexible coupling respectively with angular encoder, angular encoder is arranged on the encoder support and with the motor-end surface cover and is connected, the motor-end surface cover is fixedly set in the oil hydraulic motor body, the input end of electronic control unit is connected with angular encoder and the receiving angle signal, and the output terminal of electronic control unit is connected with high-speed solenoid valve and output pwm signal.
2. the speed adjusting type oil hydraulic motor based on digital flow according to claim 1 is characterized in that, described high-speed solenoid valve is two two logical high-speed solenoid valves, and conducting when charged is opened in these two two logical high-speed solenoid valve outages often.
3. the speed adjusting type oil hydraulic motor based on digital flow according to claim 1, it is characterized in that, the oil hydraulic motor plunger cavity oil inlet and oil return of a correspondence of each group high-speed solenoid valve control, wherein: first and second high-speed solenoid valves are controlled first plunger cavity respectively, the 3rd, the 4th high-speed solenoid valve is controlled second plunger cavity respectively, the 5th, the 6th high-speed solenoid valve is controlled the 3rd plunger cavity respectively, the 7th, the 8th high-speed solenoid valve is controlled the 4th plunger cavity respectively, the 9th, the tenth high-speed solenoid valve is controlled the 5th plunger cavity respectively, first, the 3rd, the 5th, the the 7th and the 9th high-speed solenoid valve is controlled corresponding plunger cavity oil-feed, second, the 4th, the 6th, the the 8th and the tenth high-speed solenoid valve is controlled corresponding plunger cavity oil return.
4. according to claim 1 or 2 or 3 described speed adjusting type oil hydraulic motors based on digital flow, it is characterized in that, described angular encoder is the detection that absolute value type angular encoder is realized the oil hydraulic motor crank angle, electronic control unit realizes controlling regularly the oil-feed and the oil return of each plunger cavity of oil hydraulic motor by the on off operating mode of angle signal decision high-speed solenoid valve.
5. the speed adjusting type oil hydraulic motor based on digital flow according to claim 1 is characterized in that, described motor-end surface cover is communicated with respectively with the high pressure filler opening and the low pressure return opening of oil supply system by main turnover runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010595894 CN102072079B (en) | 2010-12-18 | 2010-12-18 | Speed regulation type hydraulic motor based on digital distribution |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010595894 CN102072079B (en) | 2010-12-18 | 2010-12-18 | Speed regulation type hydraulic motor based on digital distribution |
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| CN102072079A true CN102072079A (en) | 2011-05-25 |
| CN102072079B CN102072079B (en) | 2013-05-29 |
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| CN 201010595894 Expired - Fee Related CN102072079B (en) | 2010-12-18 | 2010-12-18 | Speed regulation type hydraulic motor based on digital distribution |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN105386953A (en) * | 2015-12-25 | 2016-03-09 | 上海交通大学 | Digital flow-distribution constant-flow radial plunger pump |
| CN106089863A (en) * | 2016-08-23 | 2016-11-09 | 王林翔 | A kind of digital servo-hydraulic motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1800634A (en) * | 2006-01-12 | 2006-07-12 | 上海交通大学 | Electric control valve flow-distribution mechanism for crankshaft connecting rod type low-speed high-torque hydraulic motor |
| WO2008109901A1 (en) * | 2007-03-09 | 2008-09-18 | Rainer Schildberg | Inlet and outlet control for axial piston machines |
| CN101968028A (en) * | 2010-09-17 | 2011-02-09 | 上海交通大学 | Digital type assignment and regulating mechanism of low-speed and large-torsion hydraulic motor with crankshaft connecting rod |
-
2010
- 2010-12-18 CN CN 201010595894 patent/CN102072079B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1800634A (en) * | 2006-01-12 | 2006-07-12 | 上海交通大学 | Electric control valve flow-distribution mechanism for crankshaft connecting rod type low-speed high-torque hydraulic motor |
| WO2008109901A1 (en) * | 2007-03-09 | 2008-09-18 | Rainer Schildberg | Inlet and outlet control for axial piston machines |
| CN101968028A (en) * | 2010-09-17 | 2011-02-09 | 上海交通大学 | Digital type assignment and regulating mechanism of low-speed and large-torsion hydraulic motor with crankshaft connecting rod |
Non-Patent Citations (1)
| Title |
|---|
| 《机床与液压》 20081031 孟庆堂,施光林,泮健 一种数字配流与调速式低速大扭矩液压马达 1-3,17 1-5 第36卷, 第10期 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN105386953A (en) * | 2015-12-25 | 2016-03-09 | 上海交通大学 | Digital flow-distribution constant-flow radial plunger pump |
| CN106089863A (en) * | 2016-08-23 | 2016-11-09 | 王林翔 | A kind of digital servo-hydraulic motor |
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| CN102072079B (en) | 2013-05-29 |
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