CN108825387B - Overspeed protector for diesel engine - Google Patents
Overspeed protector for diesel engine Download PDFInfo
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- CN108825387B CN108825387B CN201810702512.0A CN201810702512A CN108825387B CN 108825387 B CN108825387 B CN 108825387B CN 201810702512 A CN201810702512 A CN 201810702512A CN 108825387 B CN108825387 B CN 108825387B
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- push
- diesel engine
- piston
- adjusting
- sleeve
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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
- F02D1/04—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 by mechanical means dependent on engine speed, e.g. using centrifugal governors
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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
- F02D2001/0005—Details, component parts or accessories of centrifugal governors
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- High-Pressure Fuel Injection Pump Control (AREA)
Abstract
The invention discloses a diesel engine overspeed protection device, which comprises a diesel engine body, a camshaft, an accelerator adjusting pull rod, a trigger mechanism connected with the camshaft and used for monitoring the rotating speed of the camshaft, and an actuating mechanism used for pushing the accelerator adjusting pull rod to stop the diesel engine, wherein the action outputs of the trigger mechanism and the actuating mechanism are linear movements, and the trigger mechanism and the actuating mechanism realize the transmission of actions through a push-pull wire. The invention does not need a complex lever mechanism to transmit action displacement, reduces the fulcrum, has simple installation, flexible arrangement, simple structure and strong universality, and the action displacement is transmitted by a push-pull line; the invention is independent of electricity, and can still protect the diesel engine from overspeed when power is cut off.
Description
Technical Field
The invention relates to an overspeed protection device for a diesel engine.
Background
The overspeed of the diesel engine, commonly called as 'runaway', is a serious fault of the diesel engine. It not only causes serious damage to the diesel engine parts, but also may endanger personal safety. The Chinese classification society of Steel sea vessel entry Specification specifies: besides the speed regulator, the diesel engine should also be equipped with an overspeed protection device to prevent the rotation speed of the diesel engine from exceeding 120% of the rated rotation speed. The space in the cabin of the ship is narrow, the mechanical and electrical equipment is numerous, various pipelines and cables are densely and hemp-interwoven together to interfere with each other, and in addition, the marine environment is severe, and the situation that the whole ship suddenly cuts off power or the electrical equipment fails sometimes happens. If power failure or interference occurs, the diesel engine is in danger of overspeed after the electronic speed regulation stopping device fails.
The existing diesel engine overspeed protection device mostly adopts a lever mechanism to stop, and if the publication number is CN2036209U and the name is the diesel engine overspeed protection device, the invention principle is as follows: the overspeed governor rotates along with a camshaft of the diesel engine, when the speed of the diesel engine is lower than an overspeed value, the centrifugal force borne by the flyweight is smaller than the pre-tightening force of the spring, and the plane of the swing rod pushes against the rolling bearing under the action of eccentric gravity. When the diesel engine is overspeed, the centrifugal force applied to the flyweight is larger than the pretightening force of the spring, the flyweight is thrown out to push the roller to move upwards, the swing rod swings leftwards around the pivot to be contacted with the stop, the rolling bearing in the force application part is not supported, the compressed spring pushes the piston rod to move downwards to drive the lever transmission part to move leftwards, the oil supply adjusting pull rod is forced to move rightwards to the oil supply zero position, the fuel supply is cut off to stop the diesel engine, and the adjusting pull rod can simultaneously drive the shell of the spring coupling to move rightwards to compress the spring in the. After the diesel engine is shut down, the reset handle is pressed down, the piston rod is lifted to move upwards, the swing rod rotates rightwards around the pivot under the action of eccentric gravity to reset and props against the rolling bearing again, the lever transmission part is driven to move rightwards to be separated from the adjusting pull rod when the reset handle is pressed down, and the main speed regulator power piston and the spring coupling enable the oil supply adjusting pull rod to return to the starting position of the diesel engine. The action transmission mainly depends on a complex lever mechanism (lever transmission part), the required supporting points are more, the structure is complex, the requirement on the installation position is higher, the arrangement is not flexible, and the universality is not strong.
Disclosure of Invention
The invention aims to solve the technical problem of providing an overspeed protection device for a diesel engine, which can push an accelerator adjusting pull rod to enable an accelerator of an oil injection pump to reach a zero position and cut off fuel supply of each cylinder when an electronic speed regulation stopping device fails and the diesel engine is overspeed, so that the diesel engine is stopped.
In order to solve the technical problem, the invention comprises a diesel engine body, a camshaft, an accelerator adjusting pull rod, a trigger mechanism connected with the camshaft and used for monitoring the rotating speed of the camshaft, and an actuating mechanism used for pushing the accelerator adjusting pull rod to stop the diesel engine, and is characterized in that the action outputs of the trigger mechanism and the actuating mechanism are linear movements, and the trigger mechanism and the actuating mechanism realize the transmission of actions through push-pull wires.
The trigger mechanism comprises a shell arranged on a diesel engine body, a rotating gear meshed with a gear of a cam shaft is rotatably arranged in the shell, a sinking groove is formed in the rotating gear, a flying block with the outer end part extending out of the outer surface of the gear for a set distance when the rotating speed of the rotating gear exceeds a set value is arranged in the sinking groove, a roller capable of pressing the flying block downwards when the outer end part of the flying block extends out of the outer surface of the gear and rotates to a position along with the rotating gear is arranged in the shell, and the roller is hinged with a clamping jaw through a connecting shaft; the novel push-pull wire mechanism is characterized in that a piston sleeve is arranged in the shell, a piston is arranged in the piston sleeve, an execution end of the piston is fixedly connected with a push-pull wire, a trigger spring used for enabling the piston to move towards the execution end to push the push-pull wire is sleeved on the piston in the piston sleeve, a fixing frame is fixedly arranged on the outer surface of the piston sleeve, a clamping jaw is rotatably connected with the fixing frame through a pin shaft arranged on the fixing frame, a claw hook capable of penetrating through an opening in the top of the piston sleeve and clamped at the execution end of the piston is arranged at the lower end of the clamping jaw, and the distance between the connecting shaft and the pin shaft ensures that the clamping jaw can rotate around the pin shaft.
The opposite end of the piston execution end extends out of the shell, and a reset handle is arranged on the extending section.
The rotary gear sets up the district that sinks in the opposite side that sets up heavy groove, be equipped with the wearing to establish the hole that will sink groove and district's intercommunication that sinks in the rotary gear, the inner of flyweight is equipped with admittedly and adjusts the pole, the inner of adjusting the pole passes wearing to establish the hole to set gradually pressure regulating spring and adjusting nut on wearing out the section, adjusting nut and regulation pole spiro union.
The shell is provided with an adjusting opening corresponding to the sinking area of the rotating gear, and the adjusting opening is screwed with a plug capable of sealing the adjusting opening.
The actuating mechanism comprises a push plate fixedly arranged on the accelerator adjusting pull rod and synchronously rotating with the accelerator adjusting pull rod, a support fixedly arranged on the diesel engine body, rotatably connected with the accelerator adjusting pull rod and used for supporting the accelerator adjusting pull rod, and a pushing mechanism arranged on the support and used for pushing the push plate, wherein the pushing mechanism is connected with the push-pull wire and driven by the push-pull wire to push the push plate.
The pushing mechanism comprises a sleeve, a push rod arranged in the sleeve and a pushing spring sleeved on the push rod and used for pushing the end of the push rod out of the sleeve to push the push plate, a clamping groove is formed in the peripheral surface of the push rod, a clamping opening is formed in the sleeve corresponding to the clamping groove, a clamping plate capable of being clamped into the clamping groove to achieve locking of the push rod is hinged to the support, and the clamping plate is connected with the push-pull wire and driven by the push-pull wire to be separated from the clamping groove to enable the pushing spring to push the push rod.
After the structure is adopted, the camshaft drives the rotary gear to rotate, when the diesel engine is overspeed, the trigger mechanism is triggered, the action displacement is transmitted to the actuating mechanism through the push-pull wire, the push rod in the actuating mechanism extends out to push the push plate, the push plate drives the accelerator adjusting pull rod to rotate around the bracket, and the accelerator servo mechanism is driven to move when the adjusting pull rod rotates, so that the accelerator of the oil injection pump is at a zero position; when the diesel engine normally works, the trigger mechanism does not act, and the push plate and the actuating mechanism have enough clearance without influencing the oil filling door of the diesel engine. The invention does not need a complex lever mechanism to transmit action displacement, reduces the fulcrum, has simple installation, flexible arrangement, simple structure and strong universality, and the action displacement is transmitted by a push-pull line; the invention is independent of electricity, and can still protect the diesel engine from overspeed when power is cut off.
Drawings
The invention is described in further detail below with reference to the following figures and embodiments:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is an enlarged schematic view of the structure at B in FIG. 1;
FIG. 4 is a schematic structural view of the trigger mechanism;
FIG. 5 is a schematic structural view taken along line C-C in FIG. 4;
FIG. 6 is a schematic structural view of an actuator;
FIG. 7 is a schematic structural view taken along line D-D in FIG. 6;
fig. 8 is a schematic structural view taken along line E-E in fig. 6.
Detailed Description
As shown in fig. 1 to 3, the diesel engine overspeed protection device comprises a diesel engine body, a camshaft 1, an accelerator adjusting pull rod 2, an accelerator servo mechanism 39, a trigger mechanism connected with the camshaft 1 and used for monitoring the rotating speed of the camshaft, and an actuating mechanism used for pushing the accelerator adjusting pull rod 2 to stop the diesel engine, wherein the action outputs of the trigger mechanism and the actuating mechanism are both linear movements, and the trigger mechanism and the actuating mechanism realize the transmission of actions through a pushing pull wire 3. The inner core of the push-pull wire 3 is respectively connected with the action parts of the trigger mechanism and the actuating mechanism, the outer sleeve of the push-pull wire 3 is respectively connected with the non-action parts of the trigger mechanism and the actuating mechanism, and the push-pull wire 3 can be a push-pull wire in the prior art, such as the push-pull wire produced by RINGSPANN company.
As shown in fig. 4 and 5, the triggering mechanism includes a housing 4 installed on the diesel engine body, a rotary gear 5 engaged with a gear 41 of the camshaft 1 is rotatably installed in the housing 4 through two rolling bearings 42, the rotary gear 5 and the camshaft 1 rotate synchronously, a sink groove is provided on the rotary gear 5, a flyweight 6 whose outer end extends out of the outer surface of the gear for a set distance when the rotating speed of the rotary gear 5 exceeds a set value is installed in the sink groove, a sink region is provided at the opposite side of the sink groove of the rotary gear 5, a through hole communicating the sink groove and the sink region is provided in the rotary gear 5, an adjusting rod 17 is fixedly installed at the inner end of the flyweight 6, the inner end of the adjusting rod 17 passes through the through hole, a pressure regulating spring 18 and an adjusting nut 19 are sequentially provided on the through section, and the adjusting nut. The shell 4 is provided with an adjusting opening corresponding to the sinking area of the rotating gear 5, and the adjusting opening is screwed with a plug 20 capable of sealing the adjusting opening. The plug 20 is opened, the adjusting nut 19 is screwed down or loosened by using a socket wrench, and different trigger rotating speeds can be set by changing the pretightening force of the pressure regulating spring 18 so as to adapt to diesel engines of different models.
The shell 4 is internally provided with a roller 7 which can press the flyweight 6 when the outer end part of the flyweight 6 extends out of the outer surface of the gear and rotates in place along with the rotary gear 5, and the roller 7 is hinged with a clamping jaw 9 through a connecting shaft 8; a piston sleeve 10 is arranged in a shell 4, a piston 11 is arranged in the piston sleeve 10, an execution end of the piston 11, namely the left end in figure 4, is fixedly connected with an inner core of a push-pull wire 3, an outer sleeve of the push-pull wire 3 is fixedly connected on the shell 4, a trigger spring 12 for enabling the piston 11 to move towards the execution end so as to push the push-pull wire 3 is sleeved on the piston 11 in the piston sleeve 10, a U-shaped fixed mounting frame is fixedly arranged on the outer surface of the piston sleeve 10, a claw 9 is rotatably connected with the fixed mounting frame through a pin shaft 14 arranged on the fixed mounting frame 13, a claw hook 15 which can be clamped at the execution end of the piston 11 through an opening at the top of the piston sleeve 10 is arranged at the lower end of the claw 9, the distance between a connecting shaft 8 and the pin shaft 14 ensures that the claw 9 can rotate around the pin shaft 14 when the roller 7 is pressed so as to enable the claw hook 15 to be separated from the, the roller 7 and the connecting shaft 8 are supported by the jaws 9. The opposite, right end of the actuating end of the piston 11 extends out of the housing 4 and is provided with a dust boot 25 and a reset handle 16 in that order on the extended section. In order to facilitate the installation of the piston 11 and the piston sleeve 10, the housing 4 is respectively provided with support sleeves corresponding to the two ends of the piston sleeve 10, the two ends of the piston sleeve 10 are sleeved in the support sleeves, the actuating end, namely the left end of the piston sleeve 10 is plugged by a threaded sleeve, the right end of the piston sleeve 10 is sleeved with a positioning sleeve 26 for positioning the right end of the trigger spring 12, the piston sleeve 10, the positioning sleeve 26 and the end plate 27 are welded into a whole, and the whole is fixed on the housing 4 by screwing bolts on the end plate 27.
As shown in fig. 6 to 8, the actuating mechanism includes a push plate 21 fixed on the throttle adjusting lever 2 and rotating synchronously with the throttle adjusting lever 2, a support 22 fixed on the diesel engine body and rotatably connected with the throttle adjusting lever and supporting the throttle adjusting lever, and a pushing mechanism installed on the support 22 and used for pushing the push plate 21, wherein a bushing is installed in a hole at the head of the support and used for supporting the throttle adjusting lever, the throttle adjusting lever can rotate around the support, and the pushing mechanism is connected with the push-pull wire 3 and driven by the push-pull wire 3 to push the push plate 21. In the invention, the upper part of the push plate 21 is provided with a sleeving hole for sleeving the accelerator adjusting pull rod 2, the top of the push plate 21 is provided with a clamping seam communicated with the sleeving hole, the accelerator adjusting pull rod 2 is arranged in the sleeving hole, the upper end of the push plate 21 is provided with a bolt 28 for clamping the clamping seam so as to connect the push plate 21 with the accelerator adjusting pull rod 2, and in order to ensure that the push plate 21 and the accelerator adjusting pull rod 2 rotate synchronously, the push plate 21 and the accelerator adjusting pull rod 2 are fixedly provided with an elastic cylindrical pin 29 penetrating through the push plate 21 and the.
The pushing mechanism comprises a sleeve fixedly arranged on the support 22, a push rod 30 arranged in the sleeve, and a pushing spring 23 sleeved on the push rod and used for pushing the end part of the push rod out of the sleeve to push the push plate 21, wherein a clamping groove 31 is formed in the peripheral surface of the push rod, a clamping opening is formed in the sleeve corresponding to the clamping groove, a clamping plate 24 capable of being clamped into the clamping groove to realize locking of the push rod is hinged to the sleeve through a first hinge shaft 32, and the clamping plate 24 and the push-pull wire 3 are connected through a connector 33 and driven by the push-pull wire 3 to enable the clamping plate 24 to be separated. The sleeve is composed of a rectangular box body 34, a cylindrical barrel 35, a guide sleeve 36, a sleeving sleeve 37 and an end cover 38 in sequence, the lower part of the box body is fixedly arranged on the support 22, the side part of the box body is provided with a clamping opening penetrating through the upper surface and the lower surface, the lower end of the clamping plate is hinged in the clamping opening and hinged on the side wall of the clamping opening through a first hinge shaft, the end part of the box body is provided with an opening for the push rod to extend out corresponding to the push rod, and when the diesel engine is in normal operation, a preset gap is arranged between the end part of the push rod and the push plate 21, so that the oil filling door of. In order to ensure the accuracy of the actuating mechanism, the end part of the push-pull wire 3 close to the actuating mechanism is fixed on the mounting frame, the inner core of the push-pull wire 3 is fixedly connected with the connector, the other end of the connector 33 is hinged with the clamping plate 24 through the second hinge shaft 43, the inner core of the push-pull wire 3 and the connector are horizontally arranged, and the clamping plate 24 is vertically arranged. The push rod includes first shaft segment, second shaft segment and third shaft segment from inside to outside in proper order, and the external diameter of first shaft segment is less than the external diameter of second shaft segment, and the suit promotes spring 23 on the first shaft segment, and the second shaft segment is fixed a position pushing spring 23, and the external diameter of third shaft segment is less than the external diameter of second shaft segment, and the opening of box body suits with the external diameter of third shaft segment to can carry on spacingly to the tip of second shaft segment, and then inject the maximum displacement that the push rod removed. The second shaft section is provided with a clamping groove so as to realize locking of the push rod. In order to ensure the stability of the axial movement of the push rod, the inner diameter of the end opening of the box body 34 is matched with the outer diameter of the second shaft section so as to guide the head of the push rod, the inner diameter of the guide sleeve is matched with the outer diameter of the first shaft section so as to guide the tail of the push rod, the guide sleeve is connected with the barrel through a bolt, the guide sleeve is extended by the sleeving sleeve, and the inner diameter of the sleeving sleeve is larger than that of the guide sleeve so as to reduce the friction force of the movement of the push rod.
When the diesel engine normally works, the centrifugal force borne by the flyweight 6 is smaller than the pre-tightening force of the pressure regulating spring 18, the flyweight 6 is contracted in the sinking groove and does not contact with the roller 7 when rotating along with the rotary gear 5, the claw hook 15 hooks the piston 11, and the whole trigger mechanism is not triggered; the push-pull wire 3 has no action displacement and is transmitted to the pushing mechanism, the clamping plate 24 is clamped in the annular clamping groove of the push rod, and the pushing spring 23 is compressed.
When the diesel engine is overspeed, the centrifugal force borne by the flyweight 6 is larger than the pretightening force of the pressure regulating spring 18, the flyweight 6 extends out of the sinking groove, the roller 7 is pressed down when the flyweight 6 rotates to the position along with the rotary gear 5, the claw 9 rotates clockwise around the pin shaft 14, the claw hook 15 is separated from the piston 11, the compressed trigger spring 12 pushes the piston 11 to move leftwards along the piston sleeve 10, and the action displacement is transmitted to the push-pull wire 3 connected with the head of the piston 11. Push away 3 transmission action displacements of acting as go-between to pushing mechanism, push-and-pull 3 inner core promotion connector of line drives cardboard 24 and rotates round first hinge anticlockwise, cardboard 24 is deviate from the draw-in groove in the push rod, compressed promotion spring 23 promotes the push rod and moves to the right, push rod and push plate 21 contact back promotion push plate 21 and throttle adjusting pull rod 2 rotate around support 22 anticlockwise, throttle adjusting pull rod 2 drives throttle servo mechanism and pulls the throttle of injection pump 40 to the zero-bit, the diesel engine cuts off the fuel and shuts down.
After the diesel engine is stopped at an overspeed, the flyweight 6 retracts into the sinking groove under the action of the pressure regulating spring 18, the reset handle 16 is pulled rightwards to drive the piston 11 to move rightwards, the trigger spring 12 is compressed, the claw 9 rotates anticlockwise around the pin shaft 14 under the action of gravity, and the claw hook 15 hooks the piston 11 again. The end part of the push rod is pushed to move leftwards, the clamping plate 24 is reset along with the trigger mechanism, and the clamping plate is clamped in the annular clamping groove of the piston 11 again.
The camshaft 1 drives the rotary gear 5 to rotate, when the diesel engine is overspeed, the trigger mechanism is triggered, the action displacement is transmitted to the pushing mechanism through the push-pull wire 3, a push rod in the pushing mechanism extends out of the push plate 21, the push plate 21 drives the accelerator adjusting pull rod 2 to rotate around the bracket 22, and the accelerator servo mechanism is driven to move when the adjusting pull rod rotates, so that the accelerator of the fuel injection pump is at a zero position; when the diesel engine works normally, the trigger mechanism does not act, and the push plate 21 and the pushing mechanism have enough clearance, so that the oil filling door of the diesel engine is not influenced. The invention does not need a complex lever mechanism to transmit action displacement, the pivot is reduced, the installation is simple, the action displacement is transmitted by the push-pull wire 3, the arrangement is flexible, the structure is simple, and the universality is strong; the invention is independent of electricity, and can still protect the diesel engine from overspeed when power is cut off.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The foregoing embodiments have described the present invention in detail, and it will be apparent to those skilled in the art that modifications and equivalents may be made in the embodiments described above, or some features may be substituted for those skilled in the art. It is intended that all such modifications, equivalents, improvements and the like which come within the spirit of the invention are included within the scope of the invention.
Claims (6)
1. A diesel engine overspeed protection device comprises a diesel engine body, a camshaft (1), an accelerator adjusting pull rod (2), a trigger mechanism connected with the camshaft (1) and used for monitoring the rotating speed of the camshaft, and an actuating mechanism used for pushing the accelerator adjusting pull rod (2) to stop the diesel engine, and is characterized in that the action outputs of the trigger mechanism and the actuating mechanism are linear movements, and the trigger mechanism and the actuating mechanism realize the transmission of actions through a push-pull wire (3); the trigger mechanism comprises a shell (4) arranged on a diesel engine body, a rotary gear (5) meshed with a gear of the camshaft (1) is rotatably arranged in the shell (4), a sinking groove is formed in the rotary gear (5), a flyweight (6) with the outer end part extending out of the outer surface of the gear for a set distance when the rotating speed of the rotary gear (5) exceeds a set value is arranged in the sinking groove, an idler wheel (7) which can press the flyweight (6) downwards when the outer end part of the flyweight (6) extends out of the outer surface of the gear and rotates in place along with the rotary gear (5) is arranged in the shell (4), and the idler wheel (7) is hinged with a clamping jaw (9) through a connecting; a piston sleeve (10) is arranged in the shell (4), a piston (11) is arranged in the piston sleeve (10), the actuating end of the piston (11) is fixedly connected with the push-pull wire (3), a trigger spring (12) which is used for enabling the piston (11) to move towards the actuating end so as to push the push-pull wire (3) is sleeved on the piston (11) in the piston sleeve (10), a fixed mounting frame (13) is fixedly arranged on the outer surface of the piston sleeve (10), the clamping jaw (9) is rotatably connected with the fixed mounting frame through a pin shaft (14) arranged on the fixed mounting frame, the lower end of the claw (9) is provided with a claw hook (15) which can pass through an opening at the top of the piston sleeve (10) and be clamped at the execution end of the piston (11), the distance between the connecting shaft (8) and the pin shaft (14) ensures that the claw (9) can rotate around the pin shaft (14) when the roller (7) is pressed, so that the claw hook (15) is separated from the piston (11).
2. The overspeed protection apparatus of claim 1 wherein the opposite end of the actuating end of said piston (11) extends out of said housing (4) and is provided with a reset lever (16) at the extended section.
3. The diesel engine overspeed protection device as claimed in claim 1, wherein the rotary gear (5) is provided with a sinking zone at the opposite side of the sinking groove, a through hole for communicating the sinking groove with the sinking zone is arranged in the rotary gear (5), the inner end of the flyweight (6) is fixedly provided with an adjusting rod (17), the inner end of the adjusting rod (17) passes through the through hole, a pressure regulating spring (18) and an adjusting nut (19) are sequentially arranged on the penetrating section, and the adjusting nut (19) is in threaded connection with the adjusting rod (17).
4. The diesel engine overspeed protection device as set forth in claim 3, wherein the housing (4) is provided with an adjusting opening corresponding to a subsidence area of the rotary gear (5), and the adjusting opening is screwed with a plug (20) capable of closing the adjusting opening.
5. The diesel engine overspeed protection device as set forth in any of claims 1 to 4, wherein the actuator comprises a push plate (21) fixedly mounted on the throttle adjusting lever (2) and rotating synchronously with the throttle adjusting lever (2), a support (22) fixedly mounted on the diesel engine body and rotatably connected with the throttle adjusting lever and supporting the throttle adjusting lever, and a pushing mechanism mounted on the support (22) for pushing the push plate (21), the pushing mechanism being connected with the push-pull wire (3) and driven by the push-pull wire (3) to push the push plate (21).
6. The overspeed protection device of a diesel engine according to claim 5, wherein the pushing mechanism comprises a sleeve, a push rod arranged in the sleeve, and a pushing spring (23) sleeved on the push rod for pushing the end of the push rod out of the sleeve to push the push plate (21), a clamping groove is arranged on the outer peripheral surface of the push rod, a clamping opening is arranged on the sleeve corresponding to the clamping groove, a clamping plate (24) capable of being clamped into the clamping groove to realize the locking of the push rod is hinged on the support (22), and the clamping plate (24) is connected with the push-pull wire (3) and is driven by the push-pull wire (3) to be disengaged from the clamping groove to enable the pushing spring (23) to push the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810702512.0A CN108825387B (en) | 2018-06-30 | 2018-06-30 | Overspeed protector for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810702512.0A CN108825387B (en) | 2018-06-30 | 2018-06-30 | Overspeed protector for diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108825387A CN108825387A (en) | 2018-11-16 |
| CN108825387B true CN108825387B (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810702512.0A Active CN108825387B (en) | 2018-06-30 | 2018-06-30 | Overspeed protector for diesel engine |
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| Country | Link |
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| CN (1) | CN108825387B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036209U (en) * | 1988-04-14 | 1989-04-19 | 铁道部大连机车车辆工厂 | Overspeed protecting apparatus for diesel engine |
| JP2000120454A (en) * | 1998-10-16 | 2000-04-25 | Toyota Autom Loom Works Ltd | Injection quantity adjusting device |
| CN203175690U (en) * | 2013-03-25 | 2013-09-04 | 广州柴油机厂股份有限公司 | Overspeed stopping device for diesel engine |
| CN105952500A (en) * | 2016-07-15 | 2016-09-21 | 重庆红江机械有限责任公司 | Diesel engine safety protection device |
-
2018
- 2018-06-30 CN CN201810702512.0A patent/CN108825387B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036209U (en) * | 1988-04-14 | 1989-04-19 | 铁道部大连机车车辆工厂 | Overspeed protecting apparatus for diesel engine |
| JP2000120454A (en) * | 1998-10-16 | 2000-04-25 | Toyota Autom Loom Works Ltd | Injection quantity adjusting device |
| CN203175690U (en) * | 2013-03-25 | 2013-09-04 | 广州柴油机厂股份有限公司 | Overspeed stopping device for diesel engine |
| CN105952500A (en) * | 2016-07-15 | 2016-09-21 | 重庆红江机械有限责任公司 | Diesel engine safety protection device |
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| Publication number | Publication date |
|---|---|
| CN108825387A (en) | 2018-11-16 |
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