CN108302196A - A kind of transmission protection system and method - Google Patents
A kind of transmission protection system and method Download PDFInfo
- Publication number
- CN108302196A CN108302196A CN201711289317.1A CN201711289317A CN108302196A CN 108302196 A CN108302196 A CN 108302196A CN 201711289317 A CN201711289317 A CN 201711289317A CN 108302196 A CN108302196 A CN 108302196A
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- gear
- control valve
- path control
- locking
- gas path
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/18—Preventing unintentional or unsafe shift, e.g. preventing manual shift from highest gear to reverse gear
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
A kind of transmission protection system of the present invention and method.When clutch pedal is not stepped on, gearshift is locked up, and can not be carried out routine and be put into gear, plucks gear operation, prevented also from phenomenon of losing rank in special road driving, to protect the synchronizer in speed changer.Protection system includes stopper mechanism, gas circuit and gas path control valve, and when not stepping on clutch pedal, gas circuit connection, the protruding portion of locking end contacts locking with the depressed area on gearshift under the influence of air pressure, cannot carry out routine at this time and put into gear or pluck gear operation；When stepping on clutch pedal, the input terminal of appendix is connected to the exhaust outlet of gas path control valve, and the gas discharge in guide frame, piston is moved to the direction far from gearshift under the action of resetting spring, locking power disappears, and can carry out conventional gear of putting into gear or pluck at this time and operate；When emergency does not step on clutch pedal, sufficiently large power is used at driver's cabin handball, gearshift implementation capacity is made to be more than locking power, can carry out forcing to put into gear or pluck gear operation.
Description
Technical field
The invention belongs to transmission technology field, specially a kind of transmission protection system and method.
Background technology
When vehicle start and shift, there are speed discrepancies between the axis and two axis of speed changer, it is necessary to pass through clutch
After device cuts the power of engine and an axis, the synchronizer in speed changer could rely on rubbing action by an axis well
Rotating speed keeps synchronous with two axis, realizes shift.
But part driver is during driving, due to personal driving habit problem, usually do not step on clutch pedal into
Gear operation is put into gear or plucked to row, and such non-standard operation mode can cause synchronizer synchronising torque to cause very much high temperature greatly, cause to synchronize
Device damages, serious to reduce synchronizer service life in speed changer, while also influencing whether traffic safety.
In normal driving conditions, if situations such as encountering big bump road surface, speed changer exists because of vehicle executor, bar
The risks of losing rank caused by factors such as system's shake will also result in the badly damaged of synchronizer in speed changer if there is phenomenon of losing rank.
Commercial car driver manipulates safety to vehicle and comfort requirement is higher and higher, and portability is manipulated in order to meet user
Experience, the gear shifting force of commercial car speed changer is generally relatively light at present.Under this state, speed changer is in the special road such as big bump
On risk bigger of losing rank, it is easier to there is phenomenon of losing rank, to being damaged to synchronizer in speed changer.
Invention content
For problems of the prior art, a kind of transmission protection system of present invention offer and method.It is stepped in clutch
When plate is not stepped on, gearshift is locked up, conventional shift power operation under can not be put into gear, pluck gear operation, prevented also from
Phenomenon of losing rank in special road driving extends its service life to protect the synchronizer in speed changer, and ensures to drive a vehicle
Safety.
The present invention is to be achieved through the following technical solutions：
A kind of transmission protection system, including air source, connection tracheae, appendix, gas path control valve, guide frame, piston,
Spring and locking end；Gas path control valve is equipped with air inlet, blowing mouth and exhaust outlet；
Air source is connected to by connecting tracheae with the sealing of the air inlet of gas path control valve；The blowing mouth of gas path control valve and gas transmission
The input terminal sealing connection of pipe, the output end of appendix are connected to the sealing of one end of guide frame；Shape is connected when clutch is in
When state, the air inlet of gas path control valve is connected to blowing mouth, when clutch is off, the blowing mouth of gas path control valve
It is connected to exhaust outlet；
It is equipped with piston, spring and locking end successively from close to one end of air source in guide frame, locking end is far from gas
The one end in source is equipped with protruding portion, and protruding portion coordinates with the depressed area on gearshift.
Preferably, guide frame is from including plug screw and shell successively close to one end of air source, and shell is equipped with through-hole, plug screw
One end and shell through-hole threaded one end connect；Piston seal is slidably arranged in plug screw, the sealing that piston is formed with plug screw
Chamber is connected to the sealing of the output end of appendix；Locking end is slidably arranged in housing through-hole.
Further, the through-hole on shell is arranged in two level stepped hole, includes subtracting successively from one end aperture close to air source
Small level-one hole section and two level hole section；Plug screw is arranged in two level multi-diameter shaft, includes being sequentially reduced from one end diameter close to air source
Level-one shaft part and two level shaft part；There is gap, locking end is close to air source between two level shaft part end face and through-hole cascaded surface
Circumferentially arranged with flange, flange is placed in gap and can be axially moveable in gap for one end.
Further, the position that the cascaded surface of plug screw is contacted with hull outside is sealed by seal washer.
Further, for outer surface of piston circumferentially arranged with groove, groove is interior to be equipped with the seal washer sealed with plug screw.
Preferably, the one end of piston far from air source is coaxially provided with the first spring base, and locking end is same close to one end of air source
Axis is equipped with second spring seat, and both ends of the spring is respectively placed in the first spring base and second spring seat.
Preferably, locking end is bulb plunger, and gearshift is gear shifting pulling head.
Preferably, mandril is set on gas path control valve, and one end that mandril stretches out gas path control valve is ball-shaped end, clutch
The V-groove coordinated with mandril ball-shaped end is provided on disengaging yoke；When clutch in an ON state when, clutch separation dial
V-groove on fork is contacted with the ball-shaped end of mandril, and the air inlet of gas path control valve is made to be connected to blowing mouth；When clutch is in
When off-state, clutch release fork rotation, compressing mandril makes the blowing mouth of gas path control valve be connected to exhaust outlet.
Preferably, it connects on tracheae and is provided with pressure regulator valve.
A kind of speed changer guard method is based on any of the above-described protection system, including,
Air source is passed through gas by connecting in tracheae and appendix directional guiding structure；
When not stepping on clutch pedal, connects tracheae and appendix is in connected state, the movement of gas push piston, piston pressure
Contracting spring, spring push locking end to be moved to gearshift direction, the recess on the protruding portion and gearshift of locking end
Location contacts are locked after forming locking power, and conventional shift power is less than locking power, cannot be carried out routine at this time and be put into gear or pluck gear operation；
When stepping on clutch pedal, the input terminal of appendix is connected to by gas path control valve with the exhaust outlet of gas path control valve, is led
Gas discharge into structure, direction movement of the piston to separate gearshift under the effect of spring force, the disappearance of locking power,
Conventional gear of putting into gear or pluck can be carried out at this time to operate；
When emergency does not step on clutch pedal, sufficiently large power is used at driver's cabin handball, makes gearshift implementation capacity
More than locking power, can carry out forcing to put into gear or pluck gear operation at this time.
Compared with prior art, the present invention has technique effect beneficial below：
Transmission protection system of the present invention is controlled by the way that gas path control valve is arranged according to the break-make of clutch
Air pressure is converted to locking power, realizes the lock of gearshift by the break-make of gas circuit by the setting of piston, spring and locking end
Only or locking is released, to control whether to allow to put into gear or pluck gear according to the break-make of clutch.Specifically, when clutch is in
When on-state, connection tracheae is connected with appendix, and gearshift is locked up, and cannot be carried out routine and be put into gear or pluck gear；Work as clutch
When device is off, appendix is connected to the exhaust outlet of gas path control valve, the gas discharge in guide frame, under pressure
Drop, gearshift release locking, can carry out routine and put into gear or pluck gear；When in emergency circumstances, clutch in an ON state when,
Sufficiently large power is used at driver's cabin handball, so that shift implementation capacity is more than locking power, it can be achieved that forcing to put into gear, plucking gear operation.This
Invention can be accustomed to the gear shift operation of specification driver, prevent driver that gear is put into gear or plucked in the case where not stepping on clutch, avoid synchronizing
Device premature deterioration caused by violation operation；Prevent the speed changer caused by the Special Roads such as big bump in driving to lose rank hidden danger,
Traffic safety is substantially improved；In the case where the parts such as clutch pedal fail, protection system can compulsory commutation realization put into gear, pluck
Gear operation, it is ensured that do not increase other security risks while traffic safety.The present invention can improve synchronizer service life, to
Improve the service life of speed changer.
Further, piston, spring and locking end are fixed on shell by plug screw, structural stability is high, reliably.
Further, there are gaps between plug screw two level shaft part and through-hole cascaded surface, and the flange on locking end is placed in
In gap, the maximum moving distance of locking end can be limited, avoid locking end displacement distance excessive, to machine of shifting gears
It is configured to damage.
Further, seal washer is set between plug screw and shell and between piston and plug screw, realizes sealing, avoids gas
Body is revealed.
Further, V-groove is opened up on clutch release fork, passes through V-groove and gas path control valve cooperation control gas
The break-make on road.
Further, by the way that regulating valve is arranged, the pressure size for executing air pressure is can control, to which the work of protection system be arranged
Locking power size, realize protection system individual demand.
The speed changer guard method of the present invention, driver do not step on before clutch pedal, and shifter of transmission is locked up, from
And gear operation can not be put into gear or be plucked in driver's cabin, can avoid the driving lack of standardization of driver leads to synchronizer premature deterioration,
It can prevent vehicle from losing rank in special road driving phenomenon, improve drive safety.Simultaneously the bad of driver is corrected to drive
Sail custom.If meeting emergency, it can also be carried out forcing to put into gear with larger operating force when protection system works, pluck gear operation.
Description of the drawings
Fig. 1 is the structural schematic diagram of protection system of the present invention.
Working state schematic representation when Fig. 2 is protection system neutral gear of the present invention.
Fig. 3 releases status diagram when being protection system neutral gear of the present invention.
Fig. 4 is that gear process releasing status diagram is hung/plucked to protection system of the present invention.
Fig. 5 is that protection system of the present invention releases status diagram in gear.
Fig. 6 is protection system of the present invention working state schematic representation in gear.
Fig. 7 is that gear process operating conditions schematic diagram is hung/plucked in protection system of the present invention pressure.
In figure：Air source 1, regulating valve 2 connect tracheae 31, appendix 32, gas path control valve 4, clutch release fork 5, spiral shell
Plug 6, piston 7, the first seal washer 8, the second seal washer 9, spring 10, bulb plunger 11, gear shifting pulling head 12, exhaust outlet 13,
Mandril 14, shell 15, gap 16, flange 17.
Specific implementation mode
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
Referring to Fig. 1, transmission protection system of the present invention, including air source 1, regulating valve 2, connection tracheae 31, gas transmission
Pipe 32, gas path control valve 4, plug screw 6, piston 7, the first seal washer 8, the second seal washer 9, spring 10 and bulb plunger 11；
Gas path control valve is equipped with air inlet, blowing mouth and exhaust outlet 13.
Air source 1 is connected to by connecting tracheae 31 with the sealing of the air inlet of gas path control valve；The blowing mouth of gas path control valve with
The input terminal sealing connection of appendix.It connects and regulating valve 2 is set on tracheae 3, the pressure that regulating valve 2 can adjust conveying gas is big
It is small, to the locking power size of regulating protecting system work, realize the personalized designs of protection system.Gas path control valve 4 can be with
According to the on off operating mode of clutch, the break-make of gas circuit is controlled；Specifically, mandril 14 is arranged on gas path control valve 4, mandril 14 stretches out
One end of gas path control valve 4 is ball-shaped end, and the V-type coordinated with 14 ball-shaped end of mandril is provided on clutch release fork 5
Slot；When clutch in an ON state when, the V-groove on clutch release fork 5 is contacted with the ball-shaped end of mandril 14, gas circuit
The air inlet of control valve is connected to blowing mouth, and gas circuit is connected；When clutch is off, clutch release fork 5 revolves
Turn, compressing mandril makes the blowing mouth of gas path control valve be connected to exhaust outlet, and gas circuit is cut off.Air source 1 is vehicle gas in this example
Source.
Shell 15 is equipped with through-hole, and through-hole is arranged in two level stepped hole, includes subtracting successively from one end aperture close to air source
Small level-one hole section and two level hole section；Plug screw is arranged in two level multi-diameter shaft, includes being sequentially reduced from one end diameter close to air source
Level-one shaft part and two level shaft part；Two level shaft part is connected through a screw thread with level-one hole section, two level shaft part end face and through-hole cascaded surface
Between there is gap, the position that the cascaded surface of plug screw 6 contact with 15 outer surface of shell to pass through the realization sealing of the first seal washer 8.
In the space that the through-hole of shell 15 is formed with plug screw 6 piston 7, spring 10 are set gradually from close to one end of air source 1
With bulb plunger 11, piston seal is slidably arranged in plug screw, the output end for the seal chamber and appendix that piston is formed with plug screw
Sealing connection；Bulb plunger 11 is slidably arranged in the two level hole section of shell.The one end of piston 7 far from air source 1 is coaxially provided with
One spring base, bulb plunger 11 are coaxially provided with second spring seat close to one end of air source 1；10 one end of spring is placed in the first spring base
Interior, the other end is placed in second spring seat.For 7 outer surface of piston circumferentially arranged with groove, groove is interior to be equipped with the second seal washer 9,
The sealing between piston 7 and plug screw 6 is preferably avoided by gas leakage using O-shaped washer in this example.
Close to one end of air source 1 circumferentially arranged with flange 17, flange 17 is placed in gap 16 and can be bulb plunger 11
It is axially moveable in gap 16.The maximum moving distance of bulb plunger 11 can be controlled, bulb plunger 11 is avoided to move
Apart from excessive, locking excessively damages.The one end of bulb plunger 11 far from air source 1 is equipped with big steel ball, and big steel ball is dialled with shift
Depressed area cooperation on first 12 carries out locking；The part that big steel ball is contacted with bulb plunger 11 is additionally provided with small steel ball, small steel ball
For ensureing that big steel ball rotation is flexible.
The protection system is the locking to gear shifting pulling head 12 in this example, in addition to this it is possible to be to gearshift
On control block, lateral shift lever etc. carry out locking with the part of groove or ball-and-socket, to realize entire transmission system protection.
The basic principle of protection system of the present invention is as follows：
The clutch release fork 5 of vehicle driver's cabin clutch pedal and speed changer links, and is set on clutch release fork 5
It counts V-groove and controls gas path control valve 4, then gas circuit is controlled by gas path control valve 4, the break-make of gas circuit controls gear shifting pulling head
12 locking releases locking, final real to realize driver's cabin clutch pedal to the locking of gear shifting pulling head 12 or release locking
Existing clutch pedal is to protecting the start-stop of system to control.Specifically, when not stepping on clutch pedal, the clutch with clutch pedal linkage
Device disengaging yoke 5 does not rotate, and gas path control valve 4 is in normally open, and air source 1 enters spiral shell by pressure regulator valve 2 and gas path control valve 4
Inside plug 6, gas pressure is much larger than the pressure of compressed spring 10, and the pressing force of compressed spring 10 is transferred to ball head column
At the big steel ball of plug 11 so that gear normally can not be put into gear or pluck at this time to 12 locking of gear shifting pulling head；When stepping on clutch pedal, with from
The mandril 14 of the rotation triggering gas path control valve 4 of clutch release fork 5 of pedal linkage is closed, gas path control valve 4 is closed, plug screw 6
It being connected to the exhaust outlet of gas path control valve 4,6 internal gas pressure of plug screw is down to atmospheric pressure, is less than 10 pressure of compressed spring,
Compressed spring 10 is elongated and pushes piston 7 to the movement of 1 direction of air source until piston 7 is limited by plug screw 6, and bulb plunger 11 has
Some locking power is changed into the pressure of compressed spring 10 by gas pressure, and locking power is smaller, and gear shifting pulling head 12 can be hung
Keep off or pluck gear operation.Entire protection system is finally realized：Driver only steps on clutch pedal when driving vehicle and just can normally hang
Gear operation is kept off or plucked, clutch pedal transmission gear locking is lifted, normally can not be put into gear or be plucked gear operation, while can prevent
There is risk of losing rank in sections such as big bumps in vehicle, further promotes traffic safety.If meet emergency but clutch pedal without
When method steps on protection systems stay work, sufficiently large power is used at driver's cabin handball, gear shifting pulling head 12 can be made to overcome locking power
Gear operation is put into gear or is plucked, the gas in plug screw 6 is inversely pressed into the air accumulator of air source 1.
The guard method of transmission protection system of the present invention is as follows：
The gas that air source 1 provides is delivered to by connecting tracheae 31 and appendix 32 in plug screw 6；
When not stepping on clutch pedal, connecting tracheae 31 and appendix 32 is in connected state, gas push piston 7 moves,
7 compressed spring 10 of piston, spring 10 push bulb plunger 11 to 12 direction of gear shifting pulling head move, the big steel ball of bulb plunger 11 with
Depressed area contact locking on gear shifting pulling head 12, conventional shift power are less than locking power at this time, cannot carry out it is conventional put into gear or
Pluck gear operation；
When stepping on clutch pedal, the input terminal of appendix is connected to the exhaust outlet of gas path control valve, and the gas in plug screw 6 is logical
The exhaust outlet discharge on gas path control valve 4 is crossed, spring 10 pushes piston 7 to be moved to the direction far from gearshift, and locking power disappears
It loses, conventional gear of putting into gear or pluck can be carried out at this time and operated；
When emergency does not step on clutch pedal, sufficiently large power is used at driver's cabin handball, makes gearshift implementation capacity
More than locking power, can carry out forcing to put into gear or pluck gear operation at this time.
Specific work process：
A. working state of system is protected when neutral gear, as shown in Figure 2.
At this point, gear shifting pulling head 12 is in neutral position state, clutch pedal is not stepped on, the clutch separation with clutch pedal linkage
Shift fork 5 does not rotate, and gas path control valve 4 is in normally open, and air source 1 is entered by pressure regulator valve 2 and gas path control valve 4 in plug screw 6
Portion, gas pressure are much larger than the pressure of compressed spring 10.Because of the sealing function of O-ring, gas push piston 7 is dialled to shift
First 12 direction movement, spring 10 are further compressed up to piston 7 and are limited by bulb plunger 11.Bulb plunger 11 passes through flange
17 limit by shell 15, and the locking power having is gas pressure by the pressure transition of compressed spring 10, and locking power is larger, changes
Gear shifting block 12 can not carry out operation of putting into gear.
B. system is protected to release state when neutral gear, as shown in Figure 3.
Gear shifting pulling head 12 is in neutral position state, steps on clutch pedal, is revolved with the clutch release fork 5 of clutch pedal linkage
Turn the mandril 14 of triggering gas path control valve 4, gas path control valve 4 is closed, and plug screw 6 is connected to the exhaust outlet 13 of gas path control valve 4, spiral shell
It fills in 6 internal gas pressures and is down to atmospheric pressure, be less than the pressure of compressed spring 10, compressed spring 10 is elongated and pushes work
Plug 7 is to the movement of the direction of air source 1 until piston 7 is limited by plug screw 6.The locking power that bulb plunger 11 has is changed by gas pressure
For the pressure of compressed spring 10, locking power is smaller, and gear shifting pulling head 12 can carry out operation of putting into gear.
C. it hangs/plucks gear process protection system and release state, as shown in Figure 4.
Clutch pedal is stepped on, the locking power of bulb plunger 11 is the pressure of compressed spring 10, and locking power is smaller, shift
Implementation capacity is more than locking power at shifting block 12, and bulb plunger 11 is moved to the direction of air source 1, and spring 10 further compresses, and can complete
Put into gear or pluck gear operation.
D. in gear, protection system releases state, as shown in Figure 5.
Gear shifting pulling head 12 is in gear state, steps on clutch pedal, the locking power of bulb plunger 11 is compressed spring
10 pressure, locking power is smaller, and gear shifting pulling head 12 can carry out plucking gear operation.
E. working state of system is protected in gear, as shown in Figure 6.
Gear shifting pulling head 12 is in gear state, lifts clutch pedal, is revolved with the clutch release fork 5 of clutch pedal linkage
Go back to the mandril 14 of position triggering gas path control valve 4, gas path control valve 4 is opened, air source 1 by pressure regulator valve 2 and gas path control valve 4 into
Enter inside plug screw 6, gas pressure is much larger than the pressure of compressed spring 10.Because of the sealing function of O-ring, gas push piston
7 move to the direction of gear shifting pulling head 12, and spring 10 further compresses until piston 7 is by the limit of bulb plunger 11, bulb plunger 11
It is limited by shell 15 by flange 17, the locking power having is gas pressure, locking by the pressure transition of compressed spring 10
Power is larger, and gear shifting pulling head 12 can not carry out plucking gear operation.
F. it forces to hang/pluck gear process protection working state of system, as shown in Figure 7.
Gear shifting pulling head 12 is in neutral gear or in gear state, does not step on clutch pedal, 11 locking power of bulb plunger is gas pressure
Power, locking power is larger, and gear shifting pulling head 12 normally can not be put into gear or be plucked gear operation.In such cases, at driver's cabin handball
Using sufficiently large power, 12 implementation capacity of gear shifting pulling head is made to be more than locking power, pushes bulb plunger 11, spring 10 and piston 7 together
It moves right, the gas in plug screw 6 is inversely pressed into the air accumulator of air source 1, completes to force to put into gear or pluck gear operation.
By protecting system, driver not to step on before clutch pedal above, gear operation, specification can not be put into gear or plucked
The driver behavior of driver protects synchronizer, while also avoiding occurring the security risk of gear in special road driving, tight
In the case of urgency, even if not stepping on clutch uses sufficiently large operating force, it can still complete to force to put into gear or pluck gear action, further carry
Traffic safety is risen.
Claims (10)
1. a kind of transmission protection system, which is characterized in that including air source (1), connection tracheae (31), appendix (32), gas circuit
Control valve (4), guide frame, piston (7), spring (10) and locking end；Gas path control valve (4) is equipped with air inlet, gas transmission
Mouth and exhaust outlet (13)；
Air source (1) is connected to by connecting tracheae (31) with the sealing of the air inlet of gas path control valve (4)；Gas path control valve (4) it is defeated
Gas port is connected to the sealing of the input terminal of appendix (32), and the output end of appendix (32) is connected to the sealing of one end of guide frame；
When clutch in an ON state when, the air inlet of gas path control valve (4) is connected to blowing mouth, when clutch is off
When, the blowing mouth of gas path control valve (4) is connected to exhaust outlet；
It is equipped with piston (7), spring (10) and locking end, locking end successively from close to one end of air source (1) in guide frame
One end far from air source (1) is equipped with protruding portion, and protruding portion coordinates with the depressed area on gearshift.
2. a kind of transmission protection system according to claim 1, which is characterized in that guide frame is from close to air source (1)
One end include plug screw (6) and shell (15) successively, shell (15) is equipped with through-hole, one end of plug screw (6) and shell (15)
Through-hole threaded one end connects；Piston (7) sealing is slidably arranged in plug screw (6), the seal chamber that piston (7) is formed with plug screw (6)
It is connected to the sealing of the output end of appendix (32)；Locking end is slidably arranged in shell (15) through-hole.
3. a kind of transmission protection system according to claim 2, which is characterized in that the through-hole on shell (15) is in two level
Stepped hole is arranged, and includes from the level-one hole section and two level hole section being sequentially reduced close to one end aperture of air source (1)；Plug screw (6) is in
Two level multi-diameter shaft is arranged, and includes the level-one shaft part being sequentially reduced from one end diameter close to air source (1) and two level shaft part；Two level axis
There are gap (16) between section end face and through-hole cascaded surface, locking end is close to one end of air source (1) circumferentially arranged with flange
(17), flange (17) is placed in gap (16) and can be axially moveable in gap (16).
4. a kind of transmission protection system according to claim 2, which is characterized in that the cascaded surface and shell of plug screw (6)
(15) position of external contact is sealed by seal washer.
5. a kind of transmission protection system according to claim 2, which is characterized in that piston (7) outer surface is circumferentially set
It is fluted, the seal washer sealed with plug screw (6) is equipped in groove.
6. a kind of transmission protection system according to claim 1, which is characterized in that the one of the separate air source (1) of piston (7)
End is coaxially provided with the first spring base, and locking end is coaxially provided with second spring seat, spring (10) both ends close to one end of air source (1)
It is respectively placed in the first spring base and second spring seat.
7. a kind of transmission protection system according to claim 1, which is characterized in that locking end is bulb plunger
(11), gearshift is gear shifting pulling head (12).
8. a kind of transmission protection system according to claim 1, which is characterized in that top is arranged on gas path control valve (4)
Bar (14), one end that mandril (14) stretches out gas path control valve (4) is ball-shaped end, be provided on clutch release fork (5) with
The V-groove of mandril (14) ball-shaped end cooperation；When clutch in an ON state when, the V-groove on clutch release fork (5)
It is contacted with the ball-shaped end of mandril (14), the air inlet of gas path control valve (4) is made to be connected to blowing mouth；It is disconnected when clutch is in
When state, clutch release fork (5) rotation, compressing mandril (14) makes the blowing mouth of gas path control valve (4) be connected to exhaust outlet.
9. a kind of transmission protection system according to claim 1, which is characterized in that be provided with tune on connection tracheae (31)
Pressure valve (2).
10. a kind of speed changer guard method, which is characterized in that claim 1-9 any one of them systems are based on, including,
Air source (1) is passed through gas by connecting in tracheae (31) and appendix (32) directional guiding structure；
When not stepping on clutch pedal, connection tracheae (31) and appendix (32) are in connected state, and gas push piston (7) moves
Dynamic, piston (7) compressed spring (10), spring (10) pushes locking end to be moved to gearshift direction, the protrusion of locking end
Portion is contacted with the depressed area on gearshift to form locking power after lock, conventional shift power is less than locking power, at this time cannot be into
Row is conventional to put into gear or plucks gear operation；
When stepping on clutch pedal, gas path control valve (4) connects the exhaust outlet of the input terminal of appendix (32) and gas path control valve (4)
Logical, the gas discharge in guide frame, piston (7) is moved to the direction far from gearshift under the action of spring (10) elastic force
Dynamic, locking power disappears, and can carry out conventional gear of putting into gear or pluck at this time and operate；
When emergency does not step on clutch pedal, sufficiently large power is used at driver's cabin handball, gearshift implementation capacity is made to be more than
Locking power can carry out forcing to put into gear or pluck gear operation at this time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711289317.1A CN108302196B (en) | 2017-12-07 | 2017-12-07 | Transmission protection system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711289317.1A CN108302196B (en) | 2017-12-07 | 2017-12-07 | Transmission protection system and method |
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| Publication Number | Publication Date |
|---|---|
| CN108302196A true CN108302196A (en) | 2018-07-20 |
| CN108302196B CN108302196B (en) | 2023-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711289317.1A Active CN108302196B (en) | 2017-12-07 | 2017-12-07 | Transmission protection system and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228553A (en) * | 2020-10-27 | 2021-01-15 | 西安法士特汽车传动有限公司 | Gear-off preventing lock and gear-off preventing control system comprising same |
| CN114754131A (en) * | 2022-04-14 | 2022-07-15 | 中国煤炭科工集团太原研究院有限公司 | Gear shifting handle interlocking device imitating clutch control |
| CN115467967A (en) * | 2022-09-30 | 2022-12-13 | 中国重汽集团济南动力有限公司 | Gear limiting method and gear limiting system suitable for manual-gear commercial vehicle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228553A (en) * | 2020-10-27 | 2021-01-15 | 西安法士特汽车传动有限公司 | Gear-off preventing lock and gear-off preventing control system comprising same |
| CN114754131A (en) * | 2022-04-14 | 2022-07-15 | 中国煤炭科工集团太原研究院有限公司 | Gear shifting handle interlocking device imitating clutch control |
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| CN115467967A (en) * | 2022-09-30 | 2022-12-13 | 中国重汽集团济南动力有限公司 | Gear limiting method and gear limiting system suitable for manual-gear commercial vehicle |
| CN115467967B (en) * | 2022-09-30 | 2023-10-10 | 中国重汽集团济南动力有限公司 | Gear limiting method and gear limiting system suitable for manual gear commercial vehicle |
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