CN107313862B - The air control unit of hydrodynamic governor - Google Patents
The air control unit of hydrodynamic governor Download PDFInfo
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- CN107313862B CN107313862B CN201710505295.1A CN201710505295A CN107313862B CN 107313862 B CN107313862 B CN 107313862B CN 201710505295 A CN201710505295 A CN 201710505295A CN 107313862 B CN107313862 B CN 107313862B
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- spring
- piston
- shell
- diaphragm
- rod
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
- F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
- F02D1/08—Transmission of control impulse to pump control, e.g. with power drive or power assistance
- F02D1/12—Transmission of control impulse to pump control, e.g. with power drive or power assistance non-mechanical, e.g. hydraulic
- F02D1/14—Transmission of control impulse to pump control, e.g. with power drive or power assistance non-mechanical, e.g. hydraulic pneumatic
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- High-Pressure Fuel Injection Pump Control (AREA)
- Actuator (AREA)
Abstract
The invention discloses a kind of air control units of hydrodynamic governor, including pneumatic speed-regulating part and pneumatic parking component, the pneumatic speed-regulating part includes shell, guide cylinder, top cover, adjusts screw, linear ball bearing, the first retainer plate, the first diaphragm, first piston, thrust bearing, the first spring, second spring, high speed limit swivel nut, the first spring base, second spring seat and speed control rod；The pneumatic parking component includes shell, guide rod, the second retainer plate, the second diaphragm, second piston, third spring, the 4th spring base and stop rod.The present invention has the function of pneumatically adjusting the speed and pneumatically stopping.
Description
Technical field
The invention belongs to diesel technologies, and in particular to a kind of range of speeds exists in 500~1500r/min diesel engine power
The hydraulic pressure speed adjustor for diesel engine of pneumatic control within 2000KW.
Background technique
Governor is a rotation speed control mechanism of diesel engine.Diesel engine condition of stable operation under certain revolving speed is
The power of output must balance each other with external load, and the variation of external load will cause the corresponding change of diesel engine speed.
It is related that the output power of diesel engine is directly pumped into the amount of fuel of cylinder with oil spout；If injection pump fuel delivery remains unchanged, that
Revolving speed will increase when external load reduces；When external load increases, revolving speed will be reduced.The effect of governor is to work as diesel oil
Machine revolving speed increases the fuel delivery of injection pump automatically when reducing；Revolving speed reduces the fuel delivery of injection pump automatically when increasing, make injection pump
Fuel delivery always with external load be adapted, thus the stable operation to guarantee diesel engine.
Hydrodynamic governor is usually to control power piston by slide valve with centrifugal force caused by block is flown come band movable pulley,
Then driving injection pump rack is gone by the output shaft that power piston connects, controls injection pump fuel delivery.Hydrodynamic governor, which has, to be adjusted
Fast precision is high, effect is big, long service life, is convenient for the advantages that automatic control and remote control.It is pneumatically adjusted the speed and pneumatic parking demand for having
Hydrodynamic governor, the invention proposes a kind of hydrodynamic governor air control units.
Summary of the invention
The object of the present invention is to provide a kind of air control units of hydrodynamic governor, it has pneumatic speed regulation and pneumatically stops
The function of vehicle.
The air control unit of hydrodynamic governor of the present invention, including pneumatic speed-regulating part and pneumatic parking component；
The pneumatic speed-regulating part includes shell, the first guide rod, the first spring, second spring, high speed limit swivel nut, first
Spring base, second spring seat and speed control rod；
The shell is fixed on the upper casing of hydrodynamic governor, the top of shell be successively arranged from top to bottom first every
Film, guide cylinder and top cover, and it is screwed locking, pressure chamber is formed between first diaphragm and guide cylinder；The top cover
Center be equipped with the adjusting screw of low speed limit, and use nut check；First guide rod is arranged in guide cylinder, and first leads
The upper end of bar and the lower end for adjusting screw push against；It is equipped with first piston in the lower section of the first guide rod, which leads with first
It is connected between bar with screw rod；First spring base is located on the upper casing of hydrodynamic governor, and first piston passes through the first spring branch
Support is on the first spring base；Pilot hole is provided in the axial direction on first spring base, the second spring seat is located at the first bullet
It is slidably matched in the pilot hole of spring abutment and with pilot hole；The lower end of the second spring is supported on second spring seat, the second bullet
The upper end of spring is located in first piston；The upper end of the speed control rod is fixedly connected with second spring seat, and the lower end of speed control rod is protruded into
It in upper casing and is supported on the third spring base of rotor part of hydrodynamic governor, to adjust revolving speed；The high speed limits spiral shell
It is set between first piston and the first spring base, and is screwed on shell, for adjusting the response air pressure of governor highest；
The pneumatic parking component includes shell, the second diaphragm, second piston, third spring, the 4th spring base and parking
Bar；The shell is screwed on upper casing；The lower end of 4th spring base and shell is screwed on；The second piston is located in shell simultaneously
Through third spring supporting on the 4th spring base, it is equipped in the top of second piston and shell is divided into the of upper and lower two chambers
Two diaphragms；The upper end of the stop rod is located in second piston, and the lower end of stop rod extend into upper casing and is supported on hydraulic
On the arresting lever of governor.
The top of second diaphragm is equipped with the second retainer plate, the second retainer plate and second piston by setting in the second shield
The second guide rod above girth sheets and the screw rod being located at below second piston clamp locking, and the side of the second diaphragm from up and down direction
Edge also passes through pressing plate and is screwed on the step of wall inside the shell, and the second retainer plate, can be effective for protecting the second diaphragm
Prevent gas pressure leak.
The edge of first diaphragm is installed between shell and guide cylinder, can effectively prevent gas pressure leak.
It is equipped with thrust bearing between the first piston and the first spring and between first piston and second spring, keeps away
Exempt from the abrasion between piston and spring.
It is equipped with linear ball bearing between the first guide rod and guide cylinder, plays lead, so that pneumatic adjust the speed steady and precision
It is higher.
Further, the first retainer plate is equipped between first diaphragm and the first guide rod, first retainer plate is for protecting
The first diaphragm is protected, and the first diaphragm is pressed closer on first piston.
Further, the shell is screwed on upper casing.
Further, gasket is equipped between the top cover and guide cylinder.
Beneficial effects of the present invention:
(1) have the function of pneumatically adjust the speed and pneumatically stop, it can be achieved that diesel engine long-range control；
(2) it is equipped with linear ball bearing lead, so that pneumatic speed regulation is steady and precision is higher；
(3) pneumatic speed regulation response air pressure is smaller, and minimum response air pressure is 1.5kPa；
(4) it is equipped with thrust bearing, avoids rubbing between piston and spring；
(5) it is equipped with small governor spring, carrys out balance portion and flies block centrifugal force；
(6) it is equipped with diaphragm, to maintain stable gas pressure, and prevents air pressure from revealing；
(7) it pneumatically adjusts the speed high lower limit response air pressure and pneumatic parking starting pressure is adjustable.
Detailed description of the invention
Fig. 1 is the outline drawing that the present invention is assemblied on hydrodynamic governor；
Fig. 2 is structural schematic diagram of the invention；
In figure, 1, upper casing, 2, pneumatic speed-regulating part, 3, pneumatically stop component, 4, adjust screw, the 5, first guide rod, 6, top
Lid, 7, gasket, 8, linear ball bearing, 9, guide cylinder, the 10, first diaphragm, the 11, first retainer plate, 12, thrust bearing, 13, the
One piston, 14, screw rod, 15, shell, the 16, first spring, 17, high speed limit swivel nut, 18, second spring, 19, second spring
Seat, the 20, first spring base, 21, speed control rod, 22, snap ring, 23, third spring base, 24, governor spring, 25, arresting lever, 26, stop
Vehicle bar, the 27, the 4th spring base, 28, third spring, 29, second piston, the 30, second diaphragm, the 31, second retainer plate, 32, second
Guide rod, 33, shell.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
The air control unit of hydrodynamic governor as shown in Figure 1, including pneumatic speed-regulating part 2 and pneumatic parking component 3.
Air control unit can be fixed at the top of hydrodynamic governor with screw.It is connected between pneumatic speed-regulating part 2 and upper casing 1 with screw,
It is threadedly coupled between pneumatic parking component 3 and upper casing 1.
As shown in Fig. 2, the pneumatic speed-regulating part 2 includes shell 15, the first guide rod 5, the first spring 16, second spring
18, high speed limit swivel nut 17, the first spring base 20 and second spring seat 19.The shell 15 is screwed on upper casing 1, shell
It is simultaneously protected with bushing 15 outside of body.The top of the shell 15 is successively arranged the first diaphragm 10, guide cylinder 9, gasket 7 from top to bottom
With top cover 6, and it is screwed locking, the edge of first diaphragm 10 is installed between shell 15 and guide cylinder 9, Neng Gouyou
Effect prevents gas pressure leak, and the first diaphragm 10 prevents gas pressure leak for maintaining stable gas pressure.The center of the top cover 6 is equipped with
The adjusting screw 4 of low speed limit, as the minimum response air pressure adjusting screw of hydrodynamic governor, i.e. it is minimum to reach this limitation for atmospheric pressure value
When air pressure, governor revolving speed starts to change, and with washer and nut check.First guide rod 5 is arranged in guide cylinder 9, and
The upper end of first guide rod 5 and the lower end for adjusting screw 4 push against.Linear ball bearing 8 is equipped between the first guide rod 5 and guide cylinder 9,
Lead is played, so that pneumatic speed regulation is steady and precision is higher.The first retainer plate 11 is equipped in the lower section of the first guide rod 5, described the
One piston 13 is arranged in the lower section of the first diaphragm 10, and the first retainer plate 11 is for protecting the first diaphragm 10, and by the first diaphragm 10
It presses closer on first piston 13.It is connected between first piston 13 and the first guide rod 5 with screw rod 14.First piston 13 passes through the first bullet
Spring 16 is supported on the first spring base 20；Pilot hole, the second spring seat are provided in the axial direction on first spring base 20
19 are located in the pilot hole of the first spring base 20 and are slidably matched with pilot hole.The lower end of the second spring 18 is supported on second
On spring base 19, the upper end of second spring 18 is located in first piston 13.Between first piston 13 and the first spring 16, and
It is equipped with thrust bearing 12 between first piston 13 and second spring 18, avoids the abrasion between piston and spring.The speed control rod
Nut check is used between 21 upper end and second spring seat 19, the lower end of speed control rod 21 extend into upper casing 1 and is supported on hydraulic
On the third spring base 23 of the rotor part of governor, to adjust revolving speed；And blocked and be oriented to snap ring 22, the high speed
The limit setting of swivel nut 17 is screwed between first piston 13 and the first spring base 20, and with shell 15, for adjusting governor most
When height response air pressure, i.e. atmospheric pressure value are more than this limitation air pressure, governor revolving speed no longer changes.
As shown in Fig. 2, the pneumatic parking component 3 includes shell 33, the second diaphragm 30, second piston 29, third spring
28, the 4th spring base 27 and stop rod 26.The shell 33 is connected through a screw thread with upper casing 1；4th spring base 27 with it is outer
The lower end of shell 33 is connected through a screw thread.The second piston 29 is located in shell 33 and is supported on the 4th bullet by third spring 28
On spring abutment 27.The second diaphragm 30 that shell 33 is divided into upper and lower two chambers is equipped in the top of second piston 29.Second every
The top of film 30 is equipped with the second retainer plate 31, the second retainer plate 31 and second piston 29 by being arranged above the second retainer plate 31
The second guide rod 32 and be located at the screw rod of the lower section of second piston 29 and clamp locking, and the edge of the second diaphragm 30 from up and down direction
It is also screwed on the step of 33 inner wall of shell by pressing plate, the second retainer plate 31, can for protecting the second diaphragm 30
It effectively prevent gas pressure leak.The upper end of the stop rod 26 is located in second piston 29, and the lower end of stop rod 26 is extend into
In shell 1 and it is supported on the arresting lever 25 of hydrodynamic governor.
When the invention works, hydrodynamic governor should be at starting operating status, and provide pressure not less than 0.6MPa's
Gas source.
As depicted in figs. 1 and 2, main operational principle of the invention is as follows:
(1) pneumatic speed regulation
Open gas source valve, be gradually increased air pressure, compressed air from the air inlet of top cover 6 enter top cover 6 and guide cylinder 9 it
Between the inner cavity that is formed, enter the pressure chamber between the first diaphragm 10 and guide cylinder 9 via the stomata of guide cylinder 9, gas pressure exists
On first retainer plate 11, as air pressure increases, air pressure overcomes the spring force of the first spring 16, presses first piston 13 and transports downwards
It is dynamic, until first piston 13 presses second spring 18, drives second spring 18 to press speed control rod 21, press the cunning of hydrodynamic governor
Valve opens control window, and control power piston moves upwards, and driving injection pump refuels, to realize that diesel engine accelerates.In revolving speed
When increase, fly block centrifugal force and increase outside whipping, third spring base 23 and slide valve are lifted, until closing control window, simultaneously
24 compressing force of governor spring will increase.When governor stabilization of speed, the spring in the same direction of second spring 18 and governor spring 24
Power balances each other with winged block centrifugal force.Conversely, reducing air pressure diesel engine can then slow down.
(2) pneumatic parking
Gas source valve is opened, is gradually increased air pressure, compressed air enters shell 33 and the second diaphragm from 33 air inlet of shell
The pressure chamber formed between 30, gas pressure is on the second retainer plate 31, and as air pressure increases, air pressure overcomes third spring 28
Spring force, presses second piston 29 and stop rod 26 moves downward, and presses arresting lever, slide valve is lifted, and opens control window, control
Piston moves downward for brake force, and driving injection pump shifts to zero for oil level, to realize that diesel engine stops.Gas source valve is closed then to stop
26 homing of vehicle bar.
Claims (8)
1. a kind of air control unit of hydrodynamic governor, it is characterised in that: including pneumatic speed-regulating part (2) and pneumatic parking portion
Part (3)；
The pneumatic speed-regulating part (2) includes shell (15), the first guide rod (5), the first spring (16), second spring (18), height
Speed limit position swivel nut (17), the first spring base (20), second spring seat (19) and speed control rod (21)；
The shell (15) is fixed on the upper casing (1) of hydrodynamic governor, is successively arranged from top to bottom in the top of shell (15)
First diaphragm (10), guide cylinder (9) and top cover (6), and it is screwed locking, first diaphragm (10) and guide cylinder (9)
Between form pressure chamber；The center of the top cover (6) is equipped with the adjusting screw (4) of low speed limit, and uses nut check；Described
One guide rod (5) setting is in guide cylinder (9), and the upper end of the first guide rod (5) and the lower end of adjusting screw (4) push against；First
The lower section of guide rod (5) is equipped with first piston (13), is connect between the first piston (13) and the first guide rod (5) with screw rod (14)；
First spring base (20) is located on the upper casing (1) of hydrodynamic governor, and first piston (13) is supported by the first spring (16)
On the first spring base (20)；Pilot hole, the second spring seat (19) are provided in the axial direction on first spring base (20)
It is slidably matched in the pilot hole of the first spring base (20) and with pilot hole；The lower end of the second spring (18) is supported on
On two spring bases (19), the upper end of second spring (18) is located in first piston (13)；The upper end of the speed control rod (21) and the
Two spring bases (19) are fixedly connected, and the lower end of speed control rod (21) extend into upper casing (1) and is supported on the rotor of hydrodynamic governor
On the third spring base (23) of component, to adjust revolving speed；High speed limit swivel nut (17) setting is in first piston (13) and the
It between one spring base (20), and is screwed on shell (15), for adjusting the response air pressure of governor highest；
The pneumatic parking component (3) includes shell (33), the second diaphragm (30), second piston (29), third spring (28),
Four spring bases (27) and stop rod (26)；The shell (33) is screwed on upper casing (1)；4th spring base (27) and shell
(33) lower end is screwed on；The second piston (29) is located in shell (33) and is supported on the 4th spring by third spring (28)
On seat (27), the second diaphragm (30) that shell (33) is divided into upper and lower two chambers is equipped in the top of second piston (29)；Institute
The upper end for stating stop rod (26) is located in second piston (29), and the lower end of stop rod (26) extend into upper casing (1) and supports
On the arresting lever (25) of hydrodynamic governor.
2. the air control unit of hydrodynamic governor according to claim 1, it is characterised in that: second diaphragm (30)
Top be equipped with the second retainer plate (31), the second retainer plate (31) and second piston (29) are by setting in the second retainer plate (31)
The second guide rod (32) of top and the screw rod being located at below second piston (29) clamp locking, and the second diaphragm from up and down direction
(30) edge also passes through pressing plate and is screwed on the step of shell (33) inner wall.
3. the air control unit of hydrodynamic governor according to claim 2, it is characterised in that: first diaphragm (10)
Edge be installed between shell (15) and guide cylinder (9).
4. the air control unit of hydrodynamic governor according to any one of claims 1 to 3, it is characterised in that: described first
Thrust bearing is equipped between piston (13) and the first spring (16) and between first piston (13) and second spring (18)
(12).
5. the air control unit of hydrodynamic governor according to claim 4, it is characterised in that: the first guide rod (5) with
Linear ball bearing (8) are equipped between guide cylinder (9).
6. the air control unit of hydrodynamic governor described according to claim 1 or 2 or 3 or 5, it is characterised in that: described
The first retainer plate (11) are equipped between one diaphragm (10) and the first guide rod (5), first retainer plate (11) is for protecting first
Diaphragm (10), and the first diaphragm (10) is pressed closer on first piston (13).
7. the air control unit of hydrodynamic governor described according to claim 1 or 2 or 3 or 5, it is characterised in that: the shell
Body (15) is screwed on upper casing (1).
8. the air control unit of hydrodynamic governor described according to claim 1 or 2 or 3 or 5, it is characterised in that: the top
It covers between (6) and guide cylinder (9) and is equipped with gasket (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710505295.1A CN107313862B (en) | 2017-06-28 | 2017-06-28 | The air control unit of hydrodynamic governor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710505295.1A CN107313862B (en) | 2017-06-28 | 2017-06-28 | The air control unit of hydrodynamic governor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107313862A CN107313862A (en) | 2017-11-03 |
| CN107313862B true CN107313862B (en) | 2019-04-16 |
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ID=60181345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710505295.1A Active CN107313862B (en) | 2017-06-28 | 2017-06-28 | The air control unit of hydrodynamic governor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107313862B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177780B (en) * | 2020-09-30 | 2022-07-19 | 重庆红江机械有限责任公司 | Electro-hydraulic speed regulator based on speed and position feedback |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441472A (en) * | 1981-09-18 | 1984-04-10 | Robert Bosch Gmbh | Charge-pressure-dependent control apparatus for supercharged fuel-injection engines, in particular for Diesel motor vehicle engines |
| CN200985830Y (en) * | 2006-12-19 | 2007-12-05 | 资阳晨风精密机械有限责任公司 | Full system type fluid pressure governor |
| CN101487423A (en) * | 2008-08-18 | 2009-07-22 | 江苏华成工矿机车有限公司 | Oil-regulation and speed control device of locomotive independent brake valve |
| CN105781749A (en) * | 2014-12-25 | 2016-07-20 | 天津环宇精密钢管有限公司 | Hydraulic speed regulator |
| CN205477949U (en) * | 2016-01-11 | 2016-08-17 | 重庆红江机械有限责任公司 | Hydraulic speed regulator |
-
2017
- 2017-06-28 CN CN201710505295.1A patent/CN107313862B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441472A (en) * | 1981-09-18 | 1984-04-10 | Robert Bosch Gmbh | Charge-pressure-dependent control apparatus for supercharged fuel-injection engines, in particular for Diesel motor vehicle engines |
| CN200985830Y (en) * | 2006-12-19 | 2007-12-05 | 资阳晨风精密机械有限责任公司 | Full system type fluid pressure governor |
| CN101487423A (en) * | 2008-08-18 | 2009-07-22 | 江苏华成工矿机车有限公司 | Oil-regulation and speed control device of locomotive independent brake valve |
| CN105781749A (en) * | 2014-12-25 | 2016-07-20 | 天津环宇精密钢管有限公司 | Hydraulic speed regulator |
| CN205477949U (en) * | 2016-01-11 | 2016-08-17 | 重庆红江机械有限责任公司 | Hydraulic speed regulator |
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| Publication number | Publication date |
|---|---|
| CN107313862A (en) | 2017-11-03 |
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