CN1006085B - Hydraulic control speed changing-regulating circuit - Google Patents
Hydraulic control speed changing-regulating circuit Download PDFInfo
- Publication number
- CN1006085B CN1006085B CN87105549.XA CN87105549A CN1006085B CN 1006085 B CN1006085 B CN 1006085B CN 87105549 A CN87105549 A CN 87105549A CN 1006085 B CN1006085 B CN 1006085B
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- China
- Prior art keywords
- oil
- safety check
- speed
- valve
- fixed displacement
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 37
- 230000002457 bidirectional effect Effects 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 138
- 239000002828 fuel tank Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
A hydraulic control speed-changing and speed-regulating loop belongs to a hydraulic speed-changing and speed-regulating loop device which uses a hydraulic control valve to change the output torque and the rotating speed of an oil motor group. In the speed regulating loop composed of two-way variable oil pump 1 and two quantitative oil motors 2, 3 with equal theoretical displacement, a control valve 4 composed of three check valves, a manual two-position four-way reversing valve 6 and one-way valves 7, 8 are added, thus forming the hydraulic control speed-changing and speed-regulating loop of the invention. The check valve is used to control the oil inlet and outlet of the oil motor, so that two rows of oil motors with equal volume are sometimes connected in parallel or in series, and the output torque and rotation speed of the two motors can be changed. The hydraulic component adopted by the device is easy to manufacture, low in cost and capable of realizing long-distance high operation.
Description
The invention belongs to a kind of hydraulic speed-changing-speed-regulating circuit device that changes oil motor group output torque and rotating speed with hydraulic control valve.
By retrieval, with four pieces of the technology of the present invention background associated documents, JP56-14603, JP55-159301, JP55-139502, EP0089412.Wherein on February 12nd, 1981 disclosed Japanese JP56-14603 patent-" control loop of regulator ", its loop apparatus is mainly used four safety check, variable pressure relief valve is formed control valve, control the speed governing campaign of oil hydraulic circuit with an operating handle, stop, the control of moving direction, movement velocity.But its speed governing reduces to realize by the safety check blocking force, that is to say, reaches the speed governing purpose by leaking.So its efficient is low, off-energy is big.
The objective of the invention is to, overcome the above-mentioned deficiency of prior art, and design a kind of by two-way variable displacement pump 1, control valve 4, manually two-position four way change valve 6, first one-way valve 7, second one-way valve 8, supporting fuel tank 5 and hydraulic pipe line, control the turnover oilhole of the equal fixed displacement oil motor of two Theoretical flowing capacitys, cause the change of two oil motor oil circuit bind modes, make it in parallel sometimes, series connection sometimes.Turn round with the high pulling torque slow-speed of revolution when two motors are in parallel; During series connection, can be with the high rotation speed operation of little moment of torsion.
Task of the present invention is finished by following design: hydraulic control speed changing-speed-regulating circuit device, formed also equipped control valve 4, manual two-position four way change valve 6, first one-way valve 7, second one-way valve 8 etc. by bidirectional variable oil pump 1, second fixed displacement oil motor 2, second fixed displacement oil motor 3 and supporting hydraulic pipe line.
Two oil motors that structure is identical and Theoretical flowing capacity equates, the same solid of rotation 9 of the common driving of its output shaft.
The oil circuit of control valve 4 connects as follows: the first oil through C of first safety check 4.1
1The first oil through a with bidirectional variable oil pump 1
1And the first oil through b of first fixed displacement oil motor 2
1Link to each other; The second oil through c of the 3rd safety check 4.3
3The second oil through a with bidirectional variable oil pump 1
2And the second oil through b of second fixed displacement oil motor 3
4Link to each other; The second oil through c of second safety check 4.2
3The second oil through c with first safety check 4.1
2Link to each other, and the first oil through b of common and second fixed displacement oil motor 3
3Communicate; The first oil through c of second safety check 4.2
4The first oil through c with the 3rd safety check 4.3
7Link to each other, and the second oil through b of common and first fixed displacement oil motor 2
2Communicate; The control oilhole c of first safety check 4.1
3With the control oilhole c of the 3rd safety check 4.3, so normal open is the spool synchronization motion of the spool of first safety check and the 3rd safety check.
Manually the oil circuit of two-position four way change valve 6 connects as follows: its work oilhole d
3Can connect the control oilhole c of second safety check 4.2
6, maybe can connect the control oilhole c of first safety check 4.1
3Control oilhole c with the 3rd safety check 4.3
9; Its work oilhole d
4Can connect the control oilhole c of first safety check 4.1
3Control oilhole C with the 3rd safety check 4.3
9, maybe can connect the control oilhole c of second safety check 4.2
6; When manual two-position four way change valve 6 during at shown position, its first work oilhole d
3Logical pressure oilhole d
1, the second work oilhole d
4Logical spill port d
2When manual two-position four way change valve 6 commutates, its first work oilhole d
3Logical spill port d
2, the second work oilhole d
4Logical pressure oilhole d
1; Spill port d
2Normal open fuel tank 5.A pressure end oil through e of first one-way valve 7
1, a pressure end oil through f of second one-way valve 8
1The first oil through a of difference pass two-way variable capacity oil pump 1
1And the second oil through a
2; The secondary pressure end oil through e of first one-way valve 7
2Secondary pressure end oil through f with second one-way valve 8
2Link to each other, and the pressure oilhole d of common and manual two-position four way change valve 6
1Communicate.
The action in loop of the present invention: first kind of situation is as two-position four way change valve 6 operating handles during in position shown in the accompanying drawing, this valve work oilhole d
3With pressure oilhole d
1Logical; Work oilhole d
4With spill port d
2Logical.The control oilhole c of second safety check 4.2
6Logical pressure oil, if do not consider line loss, the working pressure of pressure oil equates with the working pressure of bidirectional variable oil pump 1, oil pressure and the downforce of spring force acting in conjunction on spool are bigger than top power on below the spool all the time, therefore, second safety check, 4.2 spools press down, and make the first oil through c of second safety check
4With the second oil through c
3Obstructed.
In the case, as the first oil through a of bidirectional variable oil pump 1
1During oil extraction, pressure oil flows to first fixed displacement oil motor, the first oil through b
1; Simultaneously, pressure oil is through first, second oil through of first safety check c
1, c
2Enter second fixed displacement oil motor, the first oil through b
3Its second oil through b
4The second oil through a of pass two-way variable capacity oil pump 1
2The second oil through b of first fixed displacement oil motor 2
2First, second oil through c through the 3rd safety check 4.3
7, c
8The second oil through a with the bidirectional variable oil pump
2Communicate.Result's two fixed displacement oil motors 2,3 are with equidirectional, identical speed parallel running.
If the second oil through a of bidirectional variable oil pump 1
2During row's pressure oil, pressure oil is through 8 pressure end oil throughs of second one-way valve f
1, secondary pressure end oil through f
2Logical manual two-position four way change valve 6 still can make second safety check, 4.2 spools press down, and seals c
4, c
5Oilhole.At this moment, two fixed displacement oil motors commutate simultaneously, with the speed parallel running.
Under first kind of situation, two motors are in parallel: output Maximum Torque M
1=1.59P2q=2 * 1.59pq
Output maximum speed n
1=Q/2q
(p is a loop works pressure in the formula, and q is the discharge capacity of two oil motors, and Q is an oil pump flow.）
Second kind of situation: when manual two-position four way change valve 6 commutates, this valve first work oilhole d
3With spill port d
2Logical, the second work oilhole d
4Logical with pressure oilhole d*.Control oilhole c
6Pressure release moves on the spool, at this moment, and the first oil through c of second safety check 4.2
4With the second oil through c
5Communicate control oilhole c
3, c
9Logical pressure oil, first safety check 4.1 and the 3rd safety check 4.3 spools all press down, and seal c
1, c
2Oilhole and c
7, c
8Oilhole.
The first oil through a when bidirectional variable oil pump 1
1During row's pressure oil, pressure oil can reach the first oil through b of first fixed displacement oil motor 2
1, enter oil motor 2 actings, again by the second oil through b
2Flow out, through the first oil through c of second safety check 4.2
4With the second oil through c
5Enter the first oil through b of second fixed displacement oil motor 3
3, making the running of second fixed displacement oil motor, pressure oil is by second fixed displacement oil motor, the second oil through b
4Flow back to the second oil through a of bidirectional variable oil pump 1
2Such two motors turn to identical, the same rotational speed series running.
If the second oil through a of bidirectional variable oil pump 1
2During row's pressure oil, pressure oil will be from the second oil through a
2Flow to the second oil through b of second fixed displacement oil motor 3
4, make the revolution of second oil motor, again from the first oil through b
3Head pressure oil is through second, the first oil through c of second safety check 4.2
3, c
4, enter the second oil through b of first fixed displacement oil motor
2, make 2 revolutions of first fixed displacement oil motor, again from the first oil through b
1Flow back to the first oil through a of bidirectional variable oil pump 1
1Like this, two motors are with identical rotating speed commutation series running.
Two motors output this moment maximum speed is
n
2＝Q/q
Max. output torque M
2=1.59pq
Draw thus: during series connection when in parallel speed ratio:
In sum, hydraulic control speed changing-flow control circuit of the present invention, when having speed adjusting performance, also can realize the two-stage speed change: first order speed is two oil motor parallel connections, output torque is big and rotating speed is low; Second level speed is two oil motors series connection, the little and rotating speed height of output torque, speed ratio: i=2.
The present invention compared with prior art has following advantage:
1. the control valve in hydraulic control speed changing-flow control circuit 4, its effect is equivalent to the speed changer of a speed ratio i=2.
2. the hydraulic element that adopted are simple in structure, easily make, and cost is low.
3. the control in this loop is manual two-position four way change valve 6, as long as with the oil pipe lengthening, can realize remote speed change.
4. under the situation that bidirectional variable oil pump total displacement does not increase, can realize high speed light loading and low-speed heave-load, for example be used for hydraulic wireline winch and so on machinery, its Electric Machine at Pumping Station power can lower, especially more remarkable effect in the big-flow high-pressure system can reduce the overall cost of machinery greatly.
Description of drawings:
1 bidirectional variable oil pump
2 first fixed displacement oil motors
3 second fixed displacement oil motors
4 control valves
4.1 first safety check
4.2 second safety check
4.3 the 3rd safety check
5 fuel tanks
6 manual two-position four way change valves
7 first one-way valves
8 second one-way valves
9 solid of rotation
a
1Two-way variable displacement pump first oil through
a
2Two-way variable displacement pump second oil through
b
1First fixed displacement oil motor, first oil through
b
2First fixed displacement oil motor, second oil through
b
3Second fixed displacement oil motor, first oil through
b
4Second fixed displacement oil motor, second oil through
c
1First safety check, first oil through
c
2First safety check, second oil through
c
3First safety check control oilhole
c
4Second safety check, first oil through
c
5Second safety check, second oil through
c
6Second safety check control oilhole
c
7The 3rd safety check first oil through
c
8The 3rd safety check second oil through
c
9The 3rd safety check control oilhole
d
1Manual two-position four way change valve pressure oilhole
d
2Manual two-position four way change valve spill port
d
3The manual two-position four way change valve first work oilhole
d
4The manual two-position four way change valve second work oilhole
e
1Pressure end oil through of first one-way valve
e
2The first one-way valve secondary pressure end oil through
f
1Pressure end oil through of second one-way valve
f
2The second one-way valve secondary pressure end oil through
Embodiments of the invention: design a KCY-6/900 hydraulic wireline winch, require hauling speed 0-2 meter per second, tractive force is 6 ton forces to the maximum;
By the present invention's design, can make winch have two speed levels.
1. two motors series connection: winch hauling speed 0-2 meter per second, maximum drawbar pull is 3 ton forces;
2. two motor parallel connections: winch hauling speed 0-1 meter per second, maximum drawbar pull is 6 ton forces.
At this moment, 350 liters/minute of the peak rate of flow of pump, working pressure 160kgf/cm
2, power of motor is 100 kilowatts.
If press the known technology design, then the variable displacement pump peak rate of flow is 700 liters/minute, working pressure 160kgf/cm
2The time, power of motor is 170 kilowatts.
By contrast, the present invention can make equipment volume reduce, and manufacture cost reduces.
Claims (3)
1, hydraulic control speed changing-flow control circuit, be to belong to a kind of hydraulic speed-changing-speed-regulating circuit device that changes oil motor torque and rotating speed with hydraulic control valve, first fixed displacement oil motor 2 that it is equated by bidirectional variable oil pump 1, Theoretical flowing capacity, second fixed displacement oil motor 3, manual two-position four way change valve 6, first one-way valve 7, second one-way valve 8 and hydraulic pipe line are formed, and it is characterized in that:
(1) also have in the loop by first safety check 4.1,4.3 series connection of the 3rd safety check be switch synchronously and the control valve of forming for three conical shape check valve of opposite switch motion with second safety check 4.2 4,
(2) the first oil through C of first safety check 4.1 of above-mentioned control valve 4, with the first oil through a of bidirectional variable oil pump 1, and the first oil through b of first fixed displacement oil motor 2
1Link to each other the second oil through C of the 3rd safety check 4.3
8The second oil through a with bidirectional variable oil pump 1
2And the second oil through b of second fixed displacement oil motor 3
4Link to each other, the second oil through C of second safety check 4.2 is with the second oil through C of first safety check 4.1
2Link to each other, and the first oil through b of common and second fixed displacement oil motor 3
3Communicate the first oil through C of second safety check 4.2
4The first oil through C with the 3rd safety check 4.3
7Link to each other, and the second oil through b of common and first fixed displacement oil motor 2
2Communicate the control oilhole C of first safety check 4.1
3Control oilhole C with the 3rd safety check 4.3
9Normal open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87105549.XA CN1006085B (en) | 1987-08-15 | 1987-08-15 | Hydraulic control speed changing-regulating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87105549.XA CN1006085B (en) | 1987-08-15 | 1987-08-15 | Hydraulic control speed changing-regulating circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87105549A CN87105549A (en) | 1988-02-10 |
| CN1006085B true CN1006085B (en) | 1989-12-13 |
Family
ID=4815363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87105549.XA Expired CN1006085B (en) | 1987-08-15 | 1987-08-15 | Hydraulic control speed changing-regulating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1006085B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4775812B2 (en) * | 2006-01-24 | 2011-09-21 | 株式会社 神崎高級工機製作所 | HST |
| CN101871477B (en) * | 2010-06-22 | 2012-08-29 | 上海萨澳液压传动有限公司 | Intermediate-pressure control two-position variable axial plunger hydraulic motor |
| FR2985786B1 (en) * | 2012-01-18 | 2016-11-25 | Poclain Hydraulics Ind | HYDRAULIC TRANSMISSION CIRCUIT WITH MULTIPLE CYLINDER |
| CN102996538B (en) * | 2012-11-27 | 2015-05-27 | 广州市阿盖特科技有限公司 | Automatic serial-parallel motor control system |
| CN104196781A (en) * | 2014-07-15 | 2014-12-10 | 南昌矿山机械有限公司 | CC serial single-cylinder hydraulic system of single-cylinder conical crusher |
| CN104895856B (en) * | 2015-04-07 | 2017-09-19 | 武汉船用机械有限责任公司 | A kind of winch big flow valve group and hydraulic system |
-
1987
- 1987-08-15 CN CN87105549.XA patent/CN1006085B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN87105549A (en) | 1988-02-10 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |