CN202914711U - Gearbox and gearbox rear auxiliary box protection system thereof - Google Patents
Gearbox and gearbox rear auxiliary box protection system thereof Download PDFInfo
- Publication number
- CN202914711U CN202914711U CN 201220572419 CN201220572419U CN202914711U CN 202914711 U CN202914711 U CN 202914711U CN 201220572419 CN201220572419 CN 201220572419 CN 201220572419 U CN201220572419 U CN 201220572419U CN 202914711 U CN202914711 U CN 202914711U
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- gearbox
- odd
- protective system
- controller
- predefined value
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Abstract
The utility model discloses a gearbox rear auxiliary box protection system which comprises a tacho-generator which is used for detecting vehicle speed, a locking mechanism used for carrying out locking operation to a gear selection and shifting shaft of a gearbox, and a controller used for receiving a detecting value of the tacho-generator and controlling the locking mechanism to start when the detecting value is larger than a starting preset value. The gearbox rear auxiliary box protection system detects the vehicle speed through the tacho-generator and transmits the detecting value to the controller, controls the locking mechanism to start when the detecting value is larger than the starting preset value, carries out the locking operation to the gear selection and shifting shaft, and enables the gear selection and shifting shaft to be in a locking state and be incapable of axially moving, so that the gear selection and shifting shaft is incapable of carrying out shifting operation to the gearbox, and therefore the gearbox rear auxiliary box protection system has the advantages of effectively avoiding the shifting operation of the gearbox from a high gear area to a low gear area when the vehicle speed is excessively high, effectively avoiding damage caused to the a rear auxiliary box gear, and prolonging service life of the gearbox. The utility model further provides a gearbox with the gearbox rear auxiliary box protection system.
Description
Technical field
The utility model relates to the gearbox equipment technical field, particularly odd-side protective system behind a kind of gearbox and the gearbox thereof.
Background technique
Rear odd-side is generally positioned at the latter half part of engine mission, its Main Function is that the power by main-gear box output is carried out the amplification of moment of torsion, the working state of rear odd-side is divided into high-grade district's working state and low-grade district working state, the switching of its working state be by select shift shaft move axially realize.
The gearshift principle of gearbox is as follows: make the shifting axle in the gearbox move axially the conducting direction of finishing double H valve by gearshift.Be provided with the groove that cooperates with double H valve on the shifting axle, when the corresponding high lever in the high-grade air outlet of double H valve is absorbed in the groove, the suction port of double H valve is communicated with its high-grade air outlet, the automobile source of the gas flows into the afterwards high-grade suction port of cylinder of odd-side cylinder after entering double H valve, thereby the piston of odd-side cylinder moves to high-grade position after promoting, and the odd-side gear moves in high-grade position after driving; When shifting gears low grade by top grade, the low-grade air outlet of the axial double H valve of shifting moves axially, the corresponding low lever in the low-grade air outlet of double H valve is absorbed in the groove, and the corresponding high lever in high-grade air outlet shifts out groove, so that the suction port of double H valve is communicated with its low-grade air outlet, the automobile source of the gas flows into the afterwards low-grade suction port of cylinder of odd-side cylinder after entering double H valve, thereby the piston of odd-side cylinder moves to low gear position after promoting, and odd-side is transformed into low-grade district working state by top grade district working state after this moment.
And when the piston of rear odd-side cylinder is replaced low gear position by high tap position, the top grade district gear of rear odd-side is switched mutually with low-grade district gear, when vehicle high-speed moves, gear rotational speed in the rear odd-side is higher, this moment, change gear very easily made it impaired, thereby the normal operation of odd-side after the impact when serious even the gear in the rear odd-side is scrapped, reduces the working life of gearbox.
Therefore, how avoiding gearbox to change to low grade by top grade when high speed operation, improve the working life of gearbox, is those skilled in the art's problem demanding prompt solutions.
The model utility content
In view of this, the utility model provides odd-side protective system behind a kind of gearbox, changes to low grade by top grade to avoid gearbox when the high speed operation, improves the working life of gearbox.The utility model also provides a kind of gearbox with odd-side protective system behind the above-mentioned gearbox.
For achieving the above object, the utility model provides following technological scheme:
Odd-side protective system behind a kind of gearbox comprises:
Tachogenerator for detection of the speed of a motor vehicle;
Be used for the shifting axle of described gearbox is carried out the lockable mechanism of locking operation;
Receive the checkout value of described tachogenerator and control the controller that described lockable mechanism starts when opening predefined value at it.
Preferably; behind above-mentioned gearbox in the odd-side protective system; also comprise the neutral position switch with the communication connection of described controller, described controller is for controlling the controller that described lockable mechanism starts when described checkout value is opened greater than described unlatching predefined value and described neutral position switch.
Preferably, in the odd-side protective system, described lockable mechanism comprises behind above-mentioned gearbox:
By the solenoid valve of described controller control switch, described solenoid valve has the inlet end that the high-grade air outlet for the double H valve that cooperates with described shifting axle is communicated with;
With the lock-up cylinder that the outlet side of described solenoid valve is communicated with, described lock-up cylinder has the drive end that is fixedly connected with for described shifting axle.
Preferably, in the odd-side protective system, described lock-up cylinder is one-way cylinder behind above-mentioned gearbox.
Preferably, behind above-mentioned gearbox in the odd-side protective system,
Described controller comprises:
Control the first control unit that described lockable mechanism starts during greater than described unlatching predefined value at described checkout value;
Control the second control unit that described lockable mechanism is closed when closing predefined value at described checkout value;
Described unlatching predefined value is greater than the described predefined value of closing.
Preferably, in the odd-side protective system, described tachogenerator is the speed probe of the output terminal rotating speed of the described gearbox of detection behind above-mentioned gearbox; Described unlatching predefined value is 700RPM, and the described predefined value of closing is 660RPM.
A kind of gearbox, described gearbox have such as odd-side protective system behind above-mentioned each described gearbox.
Can find out from above-mentioned technological scheme; odd-side protective system behind the gearbox that the utility model provides; detect the speed of a motor vehicle and checkout value is passed to controller by tachogenerator; be preset with the unlatching predefined value in the controller; at checkout value when opening predefined value; be that the speed of a motor vehicle is too high; when being unfavorable for having high-grade district to carry out gear shift operation to the low grade district; controller control lockable mechanism starts; the shifting axle is carried out the locking operation; make the shifting axle be in lockup state and can't move axially; can't carry out gear shift operation to gearbox; thereby gearbox is changed to the gear shift operation in low-grade district when effectively having avoided the speed of a motor vehicle too high by the top grade district, has effectively avoided damage that rear odd-side gear is caused, the working life of improving gearbox.
The utility model also provides a kind of gearbox with odd-side protective system behind the above-mentioned gearbox.Because the odd-side protective system has above-mentioned effect behind the above-mentioned gearbox, have that the gearbox of odd-side protective system also should have same technique effect behind the above-mentioned gearbox, introduce no longer one by one at this.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of odd-side protective system behind the gearbox that Fig. 1 provides for the utility model embodiment.
Embodiment
The utility model discloses odd-side protective system behind a kind of gearbox, change to low-grade district, the working life of improving gearbox by the top grade district to avoid gearbox when the high speed operation.The utility model also provides a kind of gearbox with odd-side protective system behind the above-mentioned gearbox.
Below in conjunction with the accompanying drawing among the utility model embodiment, the technological scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 1, the structural representation of odd-side protective system behind the gearbox that Fig. 1 provides for the utility model embodiment.
The utility model embodiment provides odd-side protective system behind a kind of gearbox, comprising: for detection of the tachogenerator 5 of the speed of a motor vehicle; Be used for the shifting axle 3 of gearbox is carried out the lockable mechanism of locking operation; Receive the checkout value of tachogenerator 5 and at it greater than the controller 6 of opening predefined value time control lockmaking locking mechanism and starting.
Odd-side protective system behind the gearbox that the utility model embodiment provides; detect the speed of a motor vehicle and checkout value is passed to controller 6 by tachogenerator 5; be preset with the unlatching predefined value in the controller 6; at checkout value when opening predefined value; be that the speed of a motor vehicle is too high; when being unfavorable for having high-grade district to carry out gear shift operation to the low grade district; controller 6 control lockable mechanisms start; shifting axle 3 is carried out the locking operation; make shifting axle 3 be in lockup state and can't move axially; can't carry out gear shift operation to gearbox; thereby gearbox is changed to the gear shift operation in low-grade district when effectively having avoided the speed of a motor vehicle too high by the top grade district; effectively avoid damage that rear odd-side gear is caused, improved the working life of gearbox.
In gear shift operation, by gearshift the shifting axle 3 in the gearbox is moved axially, be provided with the groove that cooperates with double H valve 2 on the shifting axle 3, shifting axle 3 is positioned at high-grade district among Fig. 1, at this moment, the suction port P of double H valve 2 is communicated with its high-grade air outlet B, and automobile source of the gas 1 enters the high-grade suction port C of cylinder of odd-side cylinder 4 after the double H valve 2 rear inflows, thereby the piston of odd-side cylinder 4 moves to high-grade position after promoting; When shifting gears low grade by top grade, shifting axle 3 moves axially to the low-grade air outlet A of double H valve 2, so that the suction port P of double H valve 2 is communicated with its low-grade air outlet A, automobile source of the gas 1 enters the low-grade suction port D of cylinder of odd-side cylinder 4 after the double H valve 2 rear inflows, thereby the piston of odd-side cylinder 4 moves to low gear position after promoting, the odd-side gear moves at low gear position after driving, and carries out gearbox by the gear shift operation of top grade district to the low grade district.Hence one can see that; when the speed of a motor vehicle is too high; be tachogenerator 5 detect the speed of a motor vehicle and the checkout value that draws when opening predefined value; odd-side protective system locking shifting axle 3 behind the gearbox that provides by the utility model embodiment; thereby it can not be moved axially, and then reach gearbox and can not carry out gear shift operation to the low grade district by the top grade district.
The permission that above-mentioned unlatching predefined value arranges for those skilled in the art is by the critical value of top grade district to the speed of a motor vehicle of low grade district gearshift.
In order to improve the working life of odd-side protective system behind the gearbox that the utility model embodiment provides; also comprise and the neutral position switch 9 of controller 6 communication connections, controller 6 is greater than the controller of opening predefined value and neutral position switch 9 unlatching time control lockmaking locking mechanisms startups at checkout value.When being shifted gears to low gear position by high-grade position, need through neutral gear position, and neutral position switch 9 is sent signal to controller 6 when speed changer is in neutral gear position, namely when speed changer is in neutral gear position and the speed of a motor vehicle and is higher than the unlatching predefined value of controller 6 interior settings, just can control lockable mechanism starts, shifting axle 3 is carried out the locking operation, thereby so that shifting axle 3 can't be replaced low gear position by high tap position.By increasing neutral position switch 9, so that the odd-side protective system only starts when gearshift behind the gearbox that the utility model embodiment provides, and do not start when not shifting gears, reduce its service time, prolonged the working life of protective system.
Lockable mechanism comprises: by the solenoid valve 7 of controller 6 control switchs, solenoid valve 7 has the inlet end that the high-grade air outlet B for the double H valve 2 that cooperates with shifting axle 3 is communicated with; With the lock-up cylinder 8 that the outlet side of solenoid valve 7 is communicated with, lock-up cylinder 8 has the drive end that is fixedly connected with for shifting axle 3.After the odd-side protective system is installed in the gearbox behind the gearbox that the utility model embodiment is provided, when the speed of a motor vehicle is too high, transmit checkout values to controller 6 by tachogenerator 5, and by 7 unlatchings of controller 6 control solenoid valves, this moment, double H valve 2 was in high tap position, the suction port P that is double H valve 2 is communicated with its high-grade air outlet B, automobile source of the gas 1 is to double H valve 2 air feed, flow to the solenoid valve 7 of opening through double H valve 2, and flow in the lock-up cylinder 8, so that the shifting axle 3 that is fixedly connected with the drive end of lock-up cylinder 8 can't move axially, and then can't carry out gear shift operation to low gear position by high-grade position; When the speed of a motor vehicle is low, transmit checkout values to controller 6 by tachogenerator 5, and control solenoid valves 7 by controller 6 and close, so that can't limiting shifting axle 3, the drive end in the lock-up cylinder 8 moves axially, low-grade outlet side A by control shifting axle 3 double H valves 2 moves, so that the suction port P of double H valve 2 is communicated with its low-grade air outlet A, and then the gas of automobile source of the gas 1 is moved to low gear position by the low-grade suction port D of cylinder of the rear odd-side cylinder 4 of double H valve 2 inflows and the piston of the rear odd-side cylinder 4 of promotion, finish by the gear shift operation of top grade to low grade.
Wherein, solenoid valve 7 is 3/2 solenoid valve of Normally closed type.
Preferably, lock-up cylinder 8 is one-way cylinder.The air inlet/outlet of individual event cylinder is communicated with the air outlet of solenoid valve 7, and as shown in Figure 1, the air inlet/outlet of individual event cylinder is arranged at the individual event cylinder near a side of double H valve 2, and the high-grade outlet side B of double H valve 2 is near the individual event cylinder.When the speed of a motor vehicle is too high, when namely needing to make shifting axle 3 to be in lockup state, air inlet in the one-way cylinder, piston in the one-way cylinder is moved to the direction away from double H valve 2, even shifting axle 3 has to the trend of the high-grade outlet side B motion of double H valve 2, thereby effectively limit shifting axle 3 to the low-grade outlet side A motion of double H valve 2 and the operation of kickdown; The speed of a motor vehicle is low can shift gears the low grade district by the top grade district time, solenoid valve 7 cuts out, stop air inlet in the individual event cylinder, gas in the one-way cylinder is squeezed under the spring action of its opposite side and discharges through the relief opening of solenoid valve 7, the at this moment axial motion of shifting axle 3 is unrestricted, can carry out gear shift operation.
Also lock-up cylinder 8 can be set to two-way cylinder, and solenoid valve 7 is set to three-way valve, two air outlets of solenoid valve 7 are communicated with the import and export of two-way cylinder respectively, move by the piston in the conducting direction control cylinder of control three-way valve, thereby finish moving axially of shifting axle 3.
In another kind of embodiment, lockable mechanism comprises: by the power switch of controller 6 control switchs; With the electromagnet that the power switch energising is connected, electromagnet cooperates installation with shifting axle 3.By the conducting of power switch, so that shifting axle 3 is opened and held to electromagnet, thereby the locking operation is finished in moving axially of restriction shifting axle 3; By the disconnection of power switch, so that electromagnet closes, thereby do not limit moving axially of shifting axle 3.
The speed wobble because automobile is in operation preferably makes controller 6 comprise: at first control unit of checkout value greater than the startup of unlatching predefined value time control lockmaking locking mechanism; At checkout value less than second control unit of closing predefined value time control lockmaking locking mechanism and closing; Open predefined value greater than closing predefined value.The checkout value that draws after tachogenerator 5 detects the speed of a motor vehicle starts lockable mechanism when opening predefined value, at speed wobble so that checkout value when opening the conversion of the predefined value left and right sides, lockable mechanism is switched between opening state and closed condition back and forth, but arrange less than the predefined value of closing of opening predefined value, when being lower than, checkout value closes lockable mechanism when closing predefined value.Effectively avoided the switching times of lockable mechanism between opening state and closed condition, the working life of having improved lockable mechanism.
For the ease of detecting, preferably tachogenerator 5 is set to detect the speed probe of the output terminal rotating speed of gearbox; Corresponding, open predefined value and be set to 700RPM, close predefined value and be set to 660RPM.Namely speed probe detect automobile gearbox the output terminal rotating speed and draw checkout value after, when checkout value was higher than 700RPM, lockable mechanism started; And when checkout value was lower than 660RPM, lockable mechanism was closed; When checkout value was in 660RPM ~ 700RPM, lockable mechanism was remained stationary, and namely original lockable mechanism is in starting state and also is in starting state this moment, and originally lockable mechanism is in closed condition and also is in closed condition at this moment.
The utility model also provides a kind of gearbox, and gearbox has such as odd-side protective system behind above-mentioned any gearbox.Because the odd-side protective system has above-mentioned effect behind the above-mentioned gearbox, have that the gearbox of odd-side protective system also should have same technique effect behind the above-mentioned gearbox, introduce no longer one by one at this.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed is and other embodiments' difference that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from spirit or scope of the present utility model, in other embodiments realization.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. odd-side protective system behind the gearbox is characterized in that, comprising:
Tachogenerator (5) for detection of the speed of a motor vehicle;
Be used for the shifting axle (3) of described gearbox is carried out the lockable mechanism of locking operation;
Receive the checkout value of described tachogenerator (5) and control the controller (6) that described lockable mechanism starts when opening predefined value at it.
2. odd-side protective system behind the gearbox as claimed in claim 1; it is characterized in that; also comprise the neutral position switch (9) with described controller (6) communication connection, described controller (6) is for controlling the controller that described lockable mechanism starts when described checkout value is opened greater than described unlatching predefined value and described neutral position switch (9).
3. odd-side protective system behind the gearbox as claimed in claim 1 is characterized in that, described lockable mechanism comprises:
By the solenoid valve (7) of described controller (6) control switch, described solenoid valve (7) has the inlet end that the high-grade air outlet (B) for the double H valve (2) that cooperates with described shifting axle (3) is communicated with;
With the lock-up cylinder (8) that the outlet side of described solenoid valve (7) is communicated with, described lock-up cylinder (8) has the drive end that is fixedly connected with for described shifting axle (3).
4. odd-side protective system behind the gearbox as claimed in claim 3 is characterized in that, described lock-up cylinder (8) is one-way cylinder.
5. odd-side protective system behind the gearbox as claimed in claim 1 is characterized in that,
Described controller (6) comprising:
Control the first control unit that described lockable mechanism starts during greater than described unlatching predefined value at described checkout value;
Control the second control unit that described lockable mechanism is closed when closing predefined value at described checkout value;
Described unlatching predefined value is greater than the described predefined value of closing.
6. odd-side protective system behind the gearbox as claimed in claim 5 is characterized in that, described tachogenerator (5) is the speed probe of the output terminal rotating speed of the described gearbox of detection; Described unlatching predefined value is 700RPM, and the described predefined value of closing is 660RPM.
7. a gearbox is characterized in that, described gearbox has such as odd-side protective system behind each described gearbox of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220572419 CN202914711U (en) | 2012-11-01 | 2012-11-01 | Gearbox and gearbox rear auxiliary box protection system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220572419 CN202914711U (en) | 2012-11-01 | 2012-11-01 | Gearbox and gearbox rear auxiliary box protection system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914711U true CN202914711U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220572419 Expired - Lifetime CN202914711U (en) | 2012-11-01 | 2012-11-01 | Gearbox and gearbox rear auxiliary box protection system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914711U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103791078A (en) * | 2012-11-01 | 2014-05-14 | 上海索达传动机械有限公司 | Transmission rear auxiliary case protection system, transmission rear auxiliary case protection method and transmission |
| CN107605607A (en) * | 2017-09-15 | 2018-01-19 | 北理慧动（常熟）车辆科技有限公司 | Engine control and device |
-
2012
- 2012-11-01 CN CN 201220572419 patent/CN202914711U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103791078A (en) * | 2012-11-01 | 2014-05-14 | 上海索达传动机械有限公司 | Transmission rear auxiliary case protection system, transmission rear auxiliary case protection method and transmission |
| CN103791078B (en) * | 2012-11-01 | 2016-10-05 | 上海索达传动机械有限公司 | Odd-side guard method and change speed gear box after after change speed gear box, odd-side protects system, change speed gear box |
| CN107605607A (en) * | 2017-09-15 | 2018-01-19 | 北理慧动（常熟）车辆科技有限公司 | Engine control and device |
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| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130501 |