CN200985830Y - Full system type fluid pressure governor - Google Patents
Full system type fluid pressure governor Download PDFInfo
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- CN200985830Y CN200985830Y CN 200620036666 CN200620036666U CN200985830Y CN 200985830 Y CN200985830 Y CN 200985830Y CN 200620036666 CN200620036666 CN 200620036666 CN 200620036666 U CN200620036666 U CN 200620036666U CN 200985830 Y CN200985830 Y CN 200985830Y
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Abstract
The utility model discloses a fully compatible hydraulic speed governor, which is the speed governing device of the diesel engine, and solves the problems of short service life, inconvenient maintenance and debug and high cost existing in the current device. The big gear 33 is drivingly connected with a selective speed gear 34 connected with the selective speed rotary cover 24 arranged with holes opposing to the oil vent controlling table of a selective speed slid valve 11. The upper of the piston 9 in the cylinder 23 is connected with a rolling film 13, and the lower is connected with a selective speed spring 22; a speed governing rod 10 is movably fitted with a spring base 23 and is connected with a selective speed board 28 and the piston 9. A floating lever 25 is connected with the selective speed board 28, the selective speed slid valve 11, and a healing lever 32; a selective speed piston is connected with the healing lever 32 and the selective speed spring connected with a fly iron 31; the selective speed piston 12 arranged in the selective speed cylinder 29 is connected with the selective speed cylinder 29 which connects with the selective speed spring; an oil controlling route of the selective speed cylinder 29 is connected with the selective speed slid valve 11 arranged in the selective speed rotary cover 24. A pillar 17 is provided with a controlling table 18, a through hole of the compensation table 19 and a pressure oil route, which are connected with a compensation pin valve 14, a buffering piston 15 and a dynamic piston 20, the buffering piston 15 is connected with a buttering spring, the controlling table 18 is connected with an oil pound 40 through a compensation oil route 39.
Description
Technical field:
The utility model is relevant with the diesel engine speed regulation device.
Background technique:
The serial speed regulator of existing associating, for electrical equipment control, directly join speed, reponse system has gas cylinder, buffer element is subjected to gravity effect, causes speed regulator electrical equipment working life short, diesel engine speed regulation system dynamics and the static accuracy secondary that can only be up to state standards.
Electrical equipment control: unite the electronic control structure of serial speed regulator referring to Fig. 1.It is formed by stepper motor 1 with by 2,3 and one groups of trapezoid spiral pair-speed-setting piston screw rods 4 of a pair of gear of this driven by motor.After stepper motor 1 is received pulse signal from driving power, by driving and driven bevel gear 2,3 and screw pair-the join effect of fast screw rod 4, the angular displacement of stepper motor 1 is changed to the vertical line displacement that speed-setting piston screw rod 4 compresses governor springs, reaches the purpose of adjusting diesel engine speed.Because between the driving and driven gear 2,3 and screw pair-and join between the fast screw rod 4 and have the gap, join the accuracy of speed with directly influencing speed regulator, and driven gear is copper product, Economy is relatively poor, and wearing and tearing back maintenance cost is higher.
Directly join speed: unite serial speed regulator referring to Fig. 2 and join the quick-mounting interposed structure.Unite serial speed regulator and do not join fast rotary sleeve and relevant oil circuit, it is that the angular displacement of stepper motor 1 directly is pressed on the governor spring 5 by the linear displacement of the fast screw rod of screw pair-join, what realize is directly to join speed, cause the diesel engine of its control to play that machine impacts rotating speed height, over-emitting black exhaust, to adjust stabilization period significantly long, the heavy easy burn out life of its stepper motor 1 load is short.
Reponse system: unite serial speed regulator bucking-out system signal referring to Fig. 3.Unite serial speed regulator bucking-out system two critical pieces are arranged: compensating unit and buffer cavity parts.Compensating unit is made up of spool valve of velocity modulation 6, compensating needle valve 7, the cylinder damping spring 8 that is opposite to guiding valve piston both sides and lining 9.The buffer cavity parts are made up of seat 10, gas cylinder 11, gland 12, screw plug 13, O shape circle 14.Because compensating piston 15 and a pair of damping spring 8 vertical placement, the sensitivity of whole speed control system is brought adverse effect, gas cylinder 11 complex structures of second compensation simultaneously, working service is very inconvenient with adjustment.
The model utility content:
The utility model purpose provides a kind of simple in structure, joins speed accurately, and is highly sensitive, long service life, and maintenance and speed governing be the full system type pictorial hydrodynamic governor easily.
The utility model is realized like this:
The utility model full system type pictorial hydrodynamic governor, comprise input device, control gear, join that quick-mounting is put and pressure compensator, input device has input shaft 41 to be connected with motor, input shaft 41 is connected with gearwheel 33, gearwheel 33 is in transmission connection with selectiove speed gear 34, selectiove speed gear 34 with join fast rotary sleeve 24 and be connected, join on the fast rotary sleeve 24 porose corresponding with the oil extraction operating console of joining ski-running valve 11, control gear is an air control unit 5, be connected with rolling diaphragm 13 on the piston 9 in its cylindrical shell 21, down with join fast spring 22 and be connected, speed control rod 10 and spring seat 23 and are joined fast plate 28 and are connected with piston 9 movingly.Joining quick-mounting is changed to and joins fast servomechanism 26, its floating lever rod 25 with join fast plate 28 and be connected, with join ski-running valve 11 and be connected, be connected with recovery lever 32, the speed-setting piston 12 of joining fast servomechanism 26 is connected with recovery lever 32, is connected with governor spring 30, governor spring 30 with fly iron 31 and be connected, speed-setting piston 12 is positioned at joins fast cylinder 29 and is connected with governor spring 30, joins the control oil channel 38 of fast cylinder 29 and is connected with the ski-running valve 11 of joining in joining fast rotary sleeve 24, and joins ski-running valve 11 and is connected with oil supply system 7.The plunger 17 of pressure compensator 3 has operating console 18 to be connected with compensating needle valve 14, damper piston 15 and power piston 20 with pressure oil circuit 37 by the hole with compensation platform 19, damper piston 15 is connected with damping spring 16, operating console 18 is connected with oil sump oil 40 by compensation oil circuit 39, and power piston is connected with the injection pump of engine tooth bar through output shaft 42.
The damper piston 15 of pressure compensator 3 and buffering spring 16 horizontal positioned.
Manual governing knob 36 is arranged and join fast plate 28 and be connected.
Plunger 17 upper ends with fly brandreth 43 and be connected, two fly iron 31 symmetrical cloth and fly brandreth 43 and be hinged, an end that flies iron 31 is connected with governor spring 30.
The utility model is simple in structure, joins speed accurately, and is highly sensitive, long service life, maintenance and easy to adjust.The utility model structurally has and three different big characteristics of the existing serial speed regulator of associating: (one) pneumatic control; (2) join speed indirectly; (3) pressure difference compensation.In practice, compare the serial speed regulator of associating, the diesel engine speed regulation system of the utility model control has had advantages such as machine is soft, the impact rotating speed is little, over-emitting black exhaust, variable working condition are not quick on the draw, compensation margin is big, power range is wide, the speed adjusting performance precision secondary that can be up to state standards, part can reach the NBS one-level, and unites the serial speed regulator secondary that can only be up to state standards.
Description of drawings
Fig. 1 unites the electronic control structure figure of serial speed regulator.
Fig. 2 unites serial speed regulator and joins quick-mounting interposed structure figure.
Fig. 3 unites serial speed regulator bucking-out system schematic representation.
Fig. 4. be the utility model structural drawing.
Fig. 5. be pneumatic control structural drawing of the present utility model.
Fig. 6 is the quick-mounting interposed structure figure that joins of the present utility model.
Fig. 7. be bucking-out system schematic representation of the present utility model.
Embodiment:
The utility model is by input device 1, speed sensitive system 2, and pressure compensating system 3, hydraulic servomechanism 4, is joined fast servomechanism 26, oil supply system 7 and stopping device 8 and is formed at air control unit 5, and the composition of each system is as shown in Figure 4.
Working procedure of the present utility model is as follows:
(1) steady working condition: motor is constant and when being under a certain rotating speed steady running at load, the centrifugal force and the governor spring 30 given pretightening forces that fly the engine rotational speed signal generation of iron 31 inductions in the speed sensitive system balance each other, make and fly iron 31 and be in vertical position, at this moment, plunger 17 and damper piston 15 all are in the equilibrium position, control mouth on the slide valve gear is hidden by the operating console on the plunger 17 18, power piston 20 remains on a certain fixed position, the engine oil amount just remains unchanged like this, motor steady running under given operating mode.
(2) variable working condition is regulated:
1. when increasing the increase of engine speed or engine loading, the former increases governor spring 30 pretightening forces, the latter descends engine speed, both of these case all makes and flies iron 31 centrifugal force less than governor spring 30 pretightening forces, causing flying iron 31 inwardly draws in, plunger 17 is moved down, operating console 18 is opened control oilhole pressure oil and is entered buffer system, pressure oil is flowing to hydraulic servomechanism 4, power piston 20 bottom surface oil masses increase and make piston rod drive the injection pump of engine tooth bar to increasing the motion of fuel oil direction, therefore increased the amount of fuel of motor, reaching increases engine speed or makes the engine loading increase but can remain on the purpose of constant rotational speed smooth operation.
2. reduce rotating speed or load: when reducing given rotating speed or engine load reduces under given rotating speed, Principles of Regulation process of the present utility model is just in time opposite with the adjusting that increases rotating speed or load increase operating mode.Reducing the engine speed operation this moment is to make to join oil outflow in the fast cylinder, causes governor spring 30 pretightening forces to reduce, and flies the pretightening force of the centrifugal force of iron greater than governor spring 30, flies iron 31 and opens; And when reducing engine loading, rotating speed is risen suddenly, and fly the pretightening force of the centrifugal force of iron 31 greater than governor spring 30, also make to fly iron 31 and outwards open.When flying iron 31 when outwards opening, can drive plunger 17 moves upward, operating console 18 on the plunger is opened the control oilhole at this moment, the oil circuit of buffer system is communicated with oil sump, control oil will flow out from pressure compensating system 3 and Hydrauservo System 4, and power piston 20 is moved downward, and drives the direction motion of the tooth bar of motor to the minimizing fuel oil, progressively adjust then reach balance after, engine speed is remained in the stable numerical value.
3. rapid response: for adapt to engine speed or load moment suddenly change needs, in cushion dashpot, have bleed off circuit, significantly heighten and turn down in engine speed, or significantly increase and decrease takes place in the load of working as motor, all will displacement significantly be arranged accordingly demanded driving force piston 20, so that amount of fuel is enough adjusted fast.In the case, damper piston 15 again to the right or move left certain distance, just can open by-pass hole (making ram directly lead to pressure oil or oil sump), and making pressure oil (or control oil) directly flow to (or outflow) hydraulic servomechanism 4 by bleed off circuit, power piston 20 just can be apace to significantly rotating speed or load variations are made adjusting like this.
(3) rotational speed setup is regulated
(1) rotational speed setup (joining fast process)
The speed regulator rotational speed setup is adjusted, and is that speed-setting piston 12 motions that utilize governor spring 30 tops to join in the fast cylinder 29 change the realization of governor spring 30 pretightening forces.When the pressure oil in the speed regulator was introduced speed-setting piston 12 upper ends of joining in the fast cylinder 29, speed-setting piston 12 moved down, and compression governor spring 30 raises rotating speed, when the oil of drain pressure in joining fast cylinder 29, move on the speed-setting piston 12, discharge governor spring 30, rotating speed is reduced.Speed regulator pressure oil flows to or flows out joins fast cylinder 29, is to be controlled by the ski-running valve 11 of joining of joining in the fast rotary sleeve 24.The operator is by changing moving up and down of speed governing air-pressure controlling speed control rod 10, and acts on and join on the velocity modulation joint floating lever rod 25 by joining fast plate 28, joins the motion of ski-running valve 11 thereby also just controlled to link to each other with floating lever rod 25.This gas-liquid control system is stepless time adjustment in whole speed range.Join fast rotary sleeve 24 and drive selectiove speed gears 34 by gearwheel 33 and join fast rotary sleeve 24 rotations, have aperture on the rotary sleeve, whenever revolve when going around and oil input channel is connected once, realize interruption fuel feeding in joining fast cylinder 29 with the slide valve gear one.
Changing speed governing air pressure raising speed or reduction of speed, because speed-setting piston 12 and the effect of joining between the ski-running valve 11 recovery connecting rod 32 and the transmitting movement of connecting plate and floating lever rod 25, when speed-setting piston 12 moves on to a new position, joining ski-running valve 11 just is pushed and gets back to neutral position closing control oilhole, make oil stop to flow to or flow out and join fast cylinder 29, thereby speed-setting piston 12 is stablized in position.
On floating lever rod 25, set up temperature compensation means in addition.Along with oily temperature and ambient temperature raise, oil viscosity reduces, and the oil pressure of joining in the fast cylinder is also reduced slightly, the temperature compensation plates 35 of floating lever rod device 25 is subjected to thermal change at this moment, the oil mass in the fast cylinder 29 is joined in compensation, makes the oil pressure of joining in the fast cylinder 29 keep constant, thereby makes the running of motor constant speed.
(2) rotating speed is heightened
The driver promotes controller level to certain position, make by speed control rod behind pneumatic diaphragm 13 pressurizeds in the air control unit 5 and join fast plate 28 left ends and move down (right-hand member is a fixed support), by steel ball temperature compensation plates 35 is moved down with joining velocity modulation joint floating lever rod 25, because of restoring link 32 low sides of floating lever rod 25 right-hand members are fulcrum, therefore its left end produces downward motion, thereby promoting to join ski-running valve 11 moves down, open the control oilhole, the pressure oil inflow of interruption is joined in the fast cylinder 29, speed-setting piston 12 moves down, with governor spring 30 compression, this power that governor spring 30 increases makes and flies iron 31 and close up, and plunger 17 moves down simultaneously, open the main control oilhole, power piston 20 rises, and drives the amount of fuel that the motor tooth bar increases Injection Pump, and engine speed raises.
When speed-setting piston 12 moves down, connecting plate and restoring link 32 just with floating lever rod 25 right-hand members to pressing down, this is to be that floating lever rod 25 left ends of fulcrum just drive and join ski-running valve 11 and move on together with the steel ball, speed-setting piston 12 continues to move down, rise to the central position up to joining ski-running valve 11, the closing control oilhole also stops pressure oil and enters and join in the fast cylinder 29.Therefore speed-setting piston 12 stops to move down and rests on the new position, at this moment flies iron 31 and is in vertical position, and motor is stabilized on the given rotating speed.
(3) rotating speed is turned down
Return controller level, promptly rotating speed is turned down, and the adjustment process of speed regulator is opposite with the adjustment process of handle (rotating speed is heightened).
(4) lifting rotating speed transient process is regulated
In order to satisfy engine balance running, during motor ascending, descending rotating speed, need certain transient time, and speed that should transient time is by the pace of change decision of speed governing air pressure.In addition, the structure of speed regulator also has the effect of buffering lifting rotating speed: join and only have an aperture on the fast rotary sleeve, whenever revolve when going around and connect once with corresponding oil supply hole.When the motor raising speed, pressure oil is flowed into discontinuously join fast cylinder 29, thereby make boosting velocity procedure slowly and steadily; When drop engine speed, because the oil extraction operating console of joining on the ski-running valve 11 under normal circumstances is overlapping with the oil drainage hole of joining on the fast rotary sleeve 24, and the plus lap amount is arranged, the diameter of operating console is slightly little, form big gap with the endoporus of joining fast rotary sleeve, inclined hole is arranged on operating console simultaneously.When rotating speed has more by a small margin reduction, it is less to join the amount of movement that ski-running valve 11 makes progress, be not enough to open the control oilhole of plus lap, thereby join the oil that fast cylinder 29 flows out and to flow out through the gap on the oil extraction operating console external diameter, just can make pressure oil flow out oilhole and get back to oil sump.When reducing rotating speed significantly, to join fast valve sliding 11 and upwards move enough distances, oil drainage hole is opened, this moment is from joining the oil that fast cylinder 29 flows out, through joining the inclined hole of ski-running valve operating console, flow back to oil sump through oil drainage hole more exactly, make speed regulator can comparatively fast be reduced to given rotating speed.
(5) manual governing
When situations such as running into air control unit 5 damages can't be carried out long-range speed governing, can use manual governing knob 36 to realize the lifting of rotating speed.Push rod under the manual governing knob 36 directly is pressed in joins on the fast plate 28, plays the same effect effect of speed control rod 10.
Differentiated part of the present utility model:
1, pneumatic control: referring to Fig. 5.Air control unit 5 mainly by cylindrical shell 21, rolling diaphragm 13, piston 9, speed control rod 10, join parts such as fast spring 22, spring seat 23 and form.When needs advance to control to engine speed, put 5 increases or reduce gas pressure for the pneumatic quick-mounting of joining, Pneumatic pipe cleaner is crossed rolling diaphragm 13 moves up and down speed control rod 10, with etc. rigidity join fast spring 22 and cooperate, the length travel of speed control rod 10 outputs is directly proportional with the control atmospheric pressure value, and speed control rod 10 acts on to join to drive by floating lever rod 25 then on the fast plate 28 joins the control that ski-running valve 11 is realized the engine speed lifting.
2, join speed indirectly: referring to Fig. 6.Join speed system by join fast rotary sleeve 24, join ski-running valve 11, floating lever rod 25, join fast servomechanism device 26 and join that fast oil circuit forms one are indirect joins fast mechanism, the accuracy that this had both guaranteed to join speed has reduced the impact to whole speed control system again.
(1). when speed regulator is in steady working condition, the velocity modulation joint operating console 27 of joining of joining on the ski-running valve 11 just covers the control oilhole of joining on the fast rotary sleeve 24, is in the central position, and the engine speed maintenance is constant.
(2). when needs change engine speed, driver's cab puts the different air pressure signal of 5 inputs for the pneumatic quick-mounting of joining by Joystick, rolling diaphragm 13 is under different air pressure signals, make speed control rod 10 go up motion downwards, by joining fast plate 28, floating lever rod 25 drives joins ski-running valve 11 upward motion downwards, make join velocity modulation joint operating console 27 downwards (on) leave the central position, impelling pressure oil to flow to (going out) joins quick-mounting and joins fast cylinder 29 in putting, speed-setting piston 12 downwards (on) move, increase the pretightening force of (minimizing) governor spring 30, reach increase (minimizing) and regulate the purpose of engine speed, thereby realize the pneumatic speed of joining indirectly motor.Under the effect of slide valve gear gearwheel 33, the driven gear 34 driven rotary cover rotation of joining fast rotary sleeve 24 belows, whenever rotate a circle owing to joining fast rotary sleeve 24 simultaneously, to joining fast servomechanism 26 fuel feeding once, its fuel feeding frequency is directly proportional with the engine speed size, can realize following synchronously of speed regulator and motor preferably, this also is to join outstanding feature of speed indirectly.
3, pressure reduction feedback: referring to Fig. 7.Bucking-out system is made up of damper piston 15, damping spring 16, Compensation Regulation needle-valve 14 and compensation operating console 19 and relevant oil duct.
(1). motor when steady working condition in the buffer system oil circuit be in the state of balance and sealing, damper piston is in the central position.
(2). when motor is in the situation of variable working condition, the control hole that plunger 17 operating consoles 18 move up and down in the quick system of speed, pressure oil will flow to (or outflow) buffer system with the unlatching of control hole, realization is to the fuel-flow control in hydraulic servomechanism 4 device, thereby makes motor need the amount of fuel supplied with controlled under different operating modes.
A. when plunger 17 moved downward, pressure oil flow to buffer system, and damper piston 15 leaves the central position and advances to the right, because the elastic force of damping spring 16 increases on one side, the elastic force of another side damping spring 16 reduces, and it is poor to form oil pressure, and affact on the compensation operating console 19 i.e. equilibrant force.Compensation platform below oil pressure is greater than the top oil pressure when initial, and equilibrant force upwards forms reverse feedback, reduce the engine speed toning, under the equilibrant force acting in conjunction of the centrifugal force that fly iron this moment and buffering bucking-out system, speed regulator can be adjusted very soon, makes motor reach needed stabilized (steady-state) speed.The size of equilibrant force is proportional to displacement, rigidity, the travelling speed of power piston 20 and the aperture of Compensation Regulation needle-valve 14 of damper piston 15.This power and governor spring 30 pretightening forces, fly iron 31 centrifugal force actings in conjunction, plunger 17 recenters rapidly, progressively makes the engine speed fluctuation decay to zero, reduces overshoot, and the fuel quantity of correct adjustment motor.
C. bucking-out system is simple for structure, has only 5 parts altogether, is convenient to adjust and safeguard.
Claims (6)
1, the full system type pictorial hydrodynamic governor, comprise input device, control gear, join that quick-mounting is put and pressure compensator, it is characterized in that input device has input shaft (41) to be connected with motor, input shaft (41) is connected with gearwheel (33), gearwheel (33) is in transmission connection with selectiove speed gear (34), selectiove speed gear (34) with join fast rotary sleeve (24) and be connected, joining fast rotary sleeve (24) goes up porose corresponding with the oil extraction operating console of joining ski-running valve (11), control gear is air control unit (5), piston (9) in its cylindrical shell (21) is gone up and is connected with rolling diaphragm (13), down with join fast spring (22) and be connected, speed control rod (10) and spring seat (23) and are joined fast plate (28) and are connected with piston (9) movingly.Joining quick-mounting is changed to and joins fast servomechanism (26), its floating lever rod (25) with join fast plate (28) and be connected, with join ski-running valve (11) and be connected, be connected with recovery lever (32), the speed-setting piston (12) of joining fast servomechanism (26) is connected with recovery lever (32), be connected with governor spring (30), governor spring (30) with fly iron (31) and be connected, speed-setting piston (12) is positioned at joins fast cylinder (29) and is connected with governor spring (30), control oil channel (38) the join ski-running valve (11) interior with joining fast rotary sleeve (24) of joining fast cylinder (29) is connected, and joins ski-running valve (11) and is connected with oil supply system (7).The plunger (17) of pressure compensator (3) has operating console (18) to be connected with compensating needle valve (14), damper piston (15) and power piston (20) with pressure oil circuit (37) by the hole with compensation platform (19), damper piston (15) is connected with damping spring (16), operating console (18) is connected with oil sump oil (40) by compensation oil circuit (39), and power piston is connected with the injection pump of engine tooth bar through output shaft (42).
2, speed regulator according to claim 1 is characterized in that the damper piston (15) of pressure compensator (3) and cushions spring (16) horizontal positioned.
3, speed regulator according to claim 1 is characterized in that having manual governing knob (36) and joins fast plate (28) and be connected.
4, speed regulator according to claim 1, (8) are positioned between control oil channel (38) and the oil sump oil (40) to it is characterized in that stopping device are arranged.
5, speed regulator according to claim 1 is characterized in that power piston (20) is connected with oil sump oil (40) through control oil channel (38), joins ski-running valve (11) and is connected with oil sump oil (40) through control oil channel (38).
6, speed regulator according to claim 1 is characterized in that plunger (17) upper end and flies brandreth (43) and be connected that two fly iron (31) symmetric arrangement, are hinged with flying brandreth (43), and an end that flies iron (31) is connected with governor spring (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620036666 CN200985830Y (en) | 2006-12-19 | 2006-12-19 | Full system type fluid pressure governor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620036666 CN200985830Y (en) | 2006-12-19 | 2006-12-19 | Full system type fluid pressure governor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200985830Y true CN200985830Y (en) | 2007-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620036666 Expired - Fee Related CN200985830Y (en) | 2006-12-19 | 2006-12-19 | Full system type fluid pressure governor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200985830Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101377237B (en) * | 2008-10-09 | 2011-12-14 | 济南二机床集团有限公司 | Hydraulic speed regulating device |
| CN105604705A (en) * | 2016-01-11 | 2016-05-25 | 重庆红江机械有限责任公司 | Dynamic displacement feedback adjusting type hydraulic speed regulator |
| CN107313862A (en) * | 2017-06-28 | 2017-11-03 | 重庆红江机械有限责任公司 | The air control unit of hydrodynamic governor |
| CN113756964A (en) * | 2021-10-08 | 2021-12-07 | 重庆红江机械有限责任公司 | Speed regulation control device |
| CN114810363A (en) * | 2022-04-13 | 2022-07-29 | 重庆红江机械有限责任公司 | Electro-hydraulic speed regulator electromagnetic servo mechanism |
| CN114856834A (en) * | 2022-04-22 | 2022-08-05 | 重庆红江机械有限责任公司 | Pneumatic and manual dual-purpose speed regulating mechanism of electro-hydraulic speed regulator |
-
2006
- 2006-12-19 CN CN 200620036666 patent/CN200985830Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101377237B (en) * | 2008-10-09 | 2011-12-14 | 济南二机床集团有限公司 | Hydraulic speed regulating device |
| CN105604705A (en) * | 2016-01-11 | 2016-05-25 | 重庆红江机械有限责任公司 | Dynamic displacement feedback adjusting type hydraulic speed regulator |
| CN105604705B (en) * | 2016-01-11 | 2018-04-03 | 重庆红江机械有限责任公司 | Dynamic displacement feedback regulation formula hydrodynamic governor |
| CN107313862A (en) * | 2017-06-28 | 2017-11-03 | 重庆红江机械有限责任公司 | The air control unit of hydrodynamic governor |
| CN107313862B (en) * | 2017-06-28 | 2019-04-16 | 重庆红江机械有限责任公司 | The air control unit of hydrodynamic governor |
| CN113756964A (en) * | 2021-10-08 | 2021-12-07 | 重庆红江机械有限责任公司 | Speed regulation control device |
| CN113756964B (en) * | 2021-10-08 | 2023-05-23 | 重庆红江机械有限责任公司 | Speed regulation control device |
| CN114810363A (en) * | 2022-04-13 | 2022-07-29 | 重庆红江机械有限责任公司 | Electro-hydraulic speed regulator electromagnetic servo mechanism |
| CN114810363B (en) * | 2022-04-13 | 2023-03-31 | 重庆红江机械有限责任公司 | Electro-hydraulic speed regulator electromagnetic servo mechanism |
| CN114856834A (en) * | 2022-04-22 | 2022-08-05 | 重庆红江机械有限责任公司 | Pneumatic and manual dual-purpose speed regulating mechanism of electro-hydraulic speed regulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |