CN202914712U - Gearbox gear shift protection mechanism - Google Patents

Gearbox gear shift protection mechanism Download PDF

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Publication number
CN202914712U
CN202914712U CN 201220562197 CN201220562197U CN202914712U CN 202914712 U CN202914712 U CN 202914712U CN 201220562197 CN201220562197 CN 201220562197 CN 201220562197 U CN201220562197 U CN 201220562197U CN 202914712 U CN202914712 U CN 202914712U
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CN
China
Prior art keywords
odd
shift shaft
declutch shift
locking plate
protection mechanism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN 201220562197
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Chinese (zh)
Inventor
许国界
赵建平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaanxi Fast Gear Co Ltd
Original Assignee
Shaanxi Fast Gear Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shaanxi Fast Gear Co Ltd filed Critical Shaanxi Fast Gear Co Ltd
Priority to CN 201220562197 priority Critical patent/CN202914712U/en
Application granted granted Critical
Publication of CN202914712U publication Critical patent/CN202914712U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model provides a gearbox gear shift protection mechanism which comprises an auxiliary box shifting fork shaft with a backset groove, a lock plate, main box shifting fork shafts with backset grooves, a cover plate, a hinge pin and a tension spring. The lock plate is installed between the cover plate and an upper cover through the hinge pin. One end of the tension spring is connected with the cover plate. The other end of the tension spring is connected with the lock plate. The lock plate is lamelliform. A contact area is arranged at one end of the lock plate, and is matched with the lockset groove of the auxiliary box shifting fork shaft. A working area is arranged at the other end of the lock plate, and is matched with the lockset grooves of the main box shifting fork shafts. The gearbox gear shift protection mechanism is capable of well preventing a situation from occurrence that when an auxiliary box gear shifting is not in place, a main box starts gear shifting, and prolonging service life of a gearbox. Due to the fact that a pure mechanical structure is adopted, performance is reliable. Due to the fact that the number of parts is small, structure is simple, and achievement is easy. The gearbox gear shift protection mechanism can be used on a gearbox without adoption of a shifting fork frame form, namely the gearbox gear shift protection mechanism can be used on the basis of not changing the structure of an existing gearbox. The entire gearbox gear shift protection mechanism is installed on the upper cover, disassembly, installation and maintenance are convenient, and influence to an existing structure is small.

Description

A kind of gearbox shifting protection mechanism
[technical field]
The utility model relates to the automobile gearbox technical field, particularly a kind of gearbox shifting protection mechanism.
[background technique]
Adopting the gearbox of major-minor case structure, generally is that odd-side connects output shaft, and suffered torque ratio main tank is large.The odd-side engage a gear is not in place, and auxiliary box synchronizer just can not mesh fully, and at this moment, if the main tank engage a gear, large input torque causes synchronizer to damage easily, reduces gearbox working life.Correct shift process is: main tank is in the neutral position, and odd-side begins engage a gear, after the odd-side engage a gear puts in place, and the main tank engage a gear.And during manual shift, because the driver is difficult for accurately judging whether the odd-side engage a gear has put in place, also just can not guarantee the odd-side engage a gear rear main tank ability engage a gear that puts in place; for this reason, must provide a kind of gearshift protection mechanism, after assurance odd-side engage a gear puts in place; main tank is just put into gear, and improves gearbox working life.
[model utility content]
The purpose of this utility model provides a kind of gearbox shifting protection mechanism, and not in place to solve major-minor box secondary box of gearbox engage a gear, main tank just begins engage a gear, the problem that causes gearbox to damage.
To achieve these goals, the utility model adopts following technological scheme:
A kind of gearbox shifting protection mechanism comprises odd-side declutch shift shaft with the backset groove, locking plate, with main tank declutch shift shaft, cover plate, bearing pin and the extension spring of backset groove; Locking plate is installed between cover plate and the loam cake by bearing pin; Extension spring one end connects cover plate, and the other end connects locking plate; It is laminar that locking plate is, and the one end is provided with the contact area that matches with the backset groove of odd-side declutch shift shaft, and the other end is provided with the working area of matching with the backset groove of main tank declutch shift shaft.
The utility model further improves and is: the odd-side declutch shift shaft passes the contact area that gear box casing enters main tank contact locking plate, and the odd-side declutch shift shaft is connected as a single entity by the piston in nut and the cylinder away from an end of main tank; Cylinder and odd-side housing link together, and odd-side housing and gear box casing link together; Two gears of the corresponding odd-side height of piston front and back two exercise ends in cylinder.
The utility model further improves and is: locking plate is provided with the guiding protruding plate that matches with loam cake.
The utility model further improves and is: cover plate is provided with the protection bending that is positioned at the locking plate below.
The utility model further improves and is: when the odd-side declutch shift shaft is positioned at engage a gear and puts the position in place, the non-backset groove area of a side contacts in the backset groove both sides of the contact area of locking plate and odd-side declutch shift shaft, the contact area of locking plate is by odd-side declutch shift shaft jack-up, and the working area of locking plate is positioned at outside the backset groove of main tank declutch shift shaft.
The utility model further improves and is: when the odd-side declutch shift shaft was positioned at engage a gear position not in place, the contact area of locking plate contacted with the backset groove area of odd-side declutch shift shaft, and the working area of locking plate is positioned at the backset groove of main tank declutch shift shaft.
The utility model further improves and is: cover plate is bolted on and covers, and loam cake and gear box casing link together.
With respect to prior art, the utlity model has following advantage:
1, can be good at preventing that the odd-side engage a gear is not in place, the situation that main tank just begins engage a gear occurs, and prolongs gearbox working life.
2, adopt pure mechanical structure, reliable performance.
3, number of spare parts is few, and is simple in structure, realizes easily.
4, can use this mechanism at the gearbox that does not adopt the pressing fork rack form, namely can use this mechanism on the basis that does not change existing gearbox designs.
5, whole mechanism is installed in and covers, and dismounting, installation, maintenance are all more convenient and less on the existing structure impact.
[description of drawings]
Fig. 1 a is structural representation of the present utility model; Fig. 1 b is the sectional view along A-A line among Fig. 1 a; Fig. 1 c is the sectional view along B-B line among Fig. 1 b;
Fig. 2 a is that the utility model is positioned at odd-side engage a gear schematic representation not in place; Fig. 2 b is odd-side engage a gear when not in place, the schematic representation that cooperates of locking plate and main tank declutch shift shaft, odd-side declutch shift shaft;
Fig. 3 is the structural representation of odd-side declutch shift shaft end;
Fig. 4 is the structural representation of main tank declutch shift shaft end;
Fig. 5 is the structural representation of locking plate;
Fig. 6 a is the structural representation of cover plate;
Fig. 6 b is the side view of Fig. 6 a.
[embodiment]
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail.
See also shown in Fig. 1 a to Fig. 6 b; a kind of gearbox shifting protection mechanism of the utility model comprises the locking plate 10 of odd-side declutch shift shaft 5 with backset groove 5.1, tape guide protruding plate 10.3, with the main tank declutch shift shaft 11 of backset groove 11.1, cover plate 8, bearing pin 12 and the extension spring 7 of band protection bending 8.1.
Odd-side declutch shift shaft 5 passes gear box casing 6 and enters main tank 16, is connected as a single entity by nut 1 and piston 2.Piston 2 slides in cylinder 3 interior front and back under gas pressure, drives odd-side declutch shift shaft 5 and seesaws with the odd-side shift fork 4 that is fixed on the odd-side declutch shift shaft 5, two gears of corresponding odd-side 15 height of front and back two exercise ends.Cylinder 3 links together with odd-side housing 17, and odd-side housing 17 links together with gear box casing 6.
Locking plate 10 is laminar, comprises the contact area 10.1 of rear end and the working area 10.2 of front end, is provided with rotary shaft hole near 10.1 places, contact area, is provided with guiding protruding plate 10.3 between rotary shaft hole and the working area 10.2.
Locking plate 10 is connected on the loam cake 9 by bearing pin 12, extension spring 7 and cover plate 8, and locking plate 10 fore-and-aft directions are respectively by loam cake 9 and cover plate 8 location; Cover plate 8 is fixed on the loam cake 9 by bolt 13, and loam cake 9 links together with gear box casing 6.Extension spring 7 one ends hang on the cover plate 8, and an end hangs on the locking plate 10.
The trigger region 10.1 of locking plate 10 contacts with the odd-side declutch shift shaft 5 that passes gear box casing 6, and locking plate working area 10.2 can snap in the backset groove 11.1 of main tank declutch shift shaft 11.
Main tank shift fork 14 is fixed on the main tank declutch shift shaft 11, slides with main tank declutch shift shaft 11 front and back, and main tank declutch shift shaft 11 is supported on the loam cake 9, main tank declutch shift shaft 11 have front in rear three positions, corresponding two gears in rear and front end wherein, the corresponding neutral gear position in neutral position.
Odd-side declutch shift shaft 5 has top grade to put in place, low gear puts in place and three positions not in place, corresponding odd-side 15 engage a gears put in place and are not in place, when odd-side declutch shift shaft 5 engage a gears put in place as shown in Figure 1, the contact area 10.1 of locking plate contacts with the non-backset groove area 5.2 of odd-side declutch shift shaft 5, and namely the contact area 10.1 of locking plate is by odd-side declutch shift shaft 5 jack-up; As shown in Figure 2, the contact area 10.1 of described locking plate contacts with the backset groove area 5.1 of odd-side declutch shift shaft when odd-side declutch shift shaft 5 engage a gears are not in place, and namely locking plate contact area 10.1 falls in the backset groove 5.1.
Locking plate 10 has locking and takes off two positions of lock, and when locking plate 10 is in when taking off lock position as shown in Figure 1, the working area 10.2 of locking plate is withdrawed from the backset groove 11.1 of main tank declutch shift shaft, and the contact area 10.1 of locking plate contacts with non-backset groove area 5.2 on the odd-side declutch shift shaft.As shown in Figure 2, the working area 10.2 of locking plate snaps in the main tank declutch shift shaft 11 backset grooves 11.1 when locking plate 10 is in the lock position, and the contact area 10.1 of locking plate 10 falls in the backset groove area 5.1 on the odd-side declutch shift shaft.
Locking plate 10 can paste loam cake 9 and cover plate 8 rotates around bearing pin 12.When locking plate 10 is in when taking off lock position, separate with loam cake 9 front of locking plate working area 10.2, and at this moment, locking plate 10 can cause locking plate 10 and loam cake 9 to be interfered around bearing pin 12 little radially wobbling.The existence of guiding protruding plate 10.3 can guarantee locking plate 10 when bearing pin 12 radially wobbles, and guiding protruding plate 10.3 is still fitted with loam cake 9, prevents locking plate working area 10.2 and loam cake 9 interference.Simultaneously, guiding protruding plate 10.3 can also strengthen the intensity of locking plate 10.
Cover plate 8 is fixed on the loam cake 9 by bolt 13, can prevent that bearing pin 12 from moving axially, and as the guide surface of locking plate 10 back.When locking plate 10 is in the lock position, if the driver to main tank 16 engage a gears, cover plate 8 stops that locking plate moves and then stops main tank declutch shift shaft 11 to move axially, and reaches the effect of backset.Simultaneously, the existence of protection bending 8.1, in the time of can preventing that extension spring 7 was lost efficacy, locking plate 10 falls under gravity in the main tank 16, causes gearbox to damage.
When odd-side declutch shift shaft 5 engage a gears put in place, odd-side declutch shift shaft 5 is in top grade or low gear position, corresponding piston 2 is in former and later two final positions, at this moment, the backset groove area 5.1 that the contact area 10.1 of locking plate is subjected to odd-side declutch shift shaft 5 to promote to withdraw from the odd-side declutch shift shaft contacts with non-backset groove area 5.2, overcome extension spring 7 active forces around bearing pin 12 rotations, locking plate working area 10.2 is withdrawed from as shown in Figure 1 in the backset groove 11.1 of main tank declutch shift shaft, at this moment, main tank declutch shift shaft 11 can slide front and back, and the driver can carry out gear shift operation to main tank 16.
When odd-side declutch shift shaft 5 engage a gears are not in place, locking plate 10 rotates around bearing pin 12 under extension spring 7 active forces, locking plate trigger region 10.1 falls in the backset groove 5.1 of odd-side declutch shift shaft, locking plate working area 10.2 snaps in the backset groove 11.1 of main tank declutch shift shaft as shown in Figure 2, because main tank declutch shift shaft 11 is stuck, can not slide front and back, so the driver can not carry out gear shift operation to main tank 16.

Claims (7)

1. a gearbox shifting protection mechanism is characterized in that, comprises the odd-side declutch shift shaft (5), locking plate (10) of band backset groove (5.1), main tank declutch shift shaft (11), cover plate (8), bearing pin (12) and the extension spring (7) of band backset groove (11.1); Locking plate (10) is installed between cover plate (8) and the loam cake (9) by bearing pin (12); Extension spring (7) one ends connect cover plate (8), and the other end connects locking plate (10); Locking plate (10) is laminar, and the one end is provided with the contact area (10.1) that matches with the backset groove (5.1) of odd-side declutch shift shaft (5), and the other end is provided with the working area (10.2) of matching with the backset groove (11.1) of main tank declutch shift shaft (11).
2. a kind of gearbox shifting protection mechanism according to claim 1, it is characterized in that, odd-side declutch shift shaft (5) passes the contact area (10.1) that gear box casing (6) enters main tank (16) contact locking plate (10), and odd-side declutch shift shaft (5) is connected as a single entity by the interior piston (2) of nut (1) and cylinder (3) away from an end of main tank (16); Cylinder (3) links together with odd-side housing (17), and odd-side housing (17) links together with gear box casing (6); Piston (2) is two gears of the front and back corresponding odd-sides of two exercise ends (15) height in cylinder (3).
3. a kind of gearbox shifting protection mechanism according to claim 1 is characterized in that, locking plate (10) is provided with the guiding protruding plate (10.3) that matches with loam cake (9).
4. a kind of gearbox shifting protection mechanism according to claim 1 is characterized in that, cover plate (8) is provided with the protection bending (8.1) that is positioned at locking plate (10) below.
5. a kind of gearbox shifting protection mechanism according to claim 1; it is characterized in that; when odd-side declutch shift shaft (5) is positioned at engage a gear and puts the position in place; the non-backset groove area (5.2) of a side contacts in backset groove (5.1) both sides of the contact area (10.1) of locking plate (10) and odd-side declutch shift shaft (5); the contact area (10.1) of locking plate (10) is by odd-side declutch shift shaft (5) jack-up, and the working area (10.2) of locking plate (10) is positioned at outside the backset groove (11.1) of main tank declutch shift shaft (11).
6. a kind of gearbox shifting protection mechanism according to claim 1; it is characterized in that; when odd-side declutch shift shaft (5) is positioned at engage a gear position not in place; the contact area (10.1) of locking plate (10) contacts with the backset groove area (5.1) of odd-side declutch shift shaft (5), and the working area (10.2) of locking plate (10) is positioned at the backset groove (11.1) of main tank declutch shift shaft (11).
7. a kind of gearbox shifting protection mechanism according to claim 1 is characterized in that, cover plate (8) is fixed on the loam cake (9) by bolt (13), and loam cake (9) links together with gear box casing (6).
CN 201220562197 2012-10-29 2012-10-29 Gearbox gear shift protection mechanism Expired - Lifetime CN202914712U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220562197 CN202914712U (en) 2012-10-29 2012-10-29 Gearbox gear shift protection mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220562197 CN202914712U (en) 2012-10-29 2012-10-29 Gearbox gear shift protection mechanism

Publications (1)

Publication Number Publication Date
CN202914712U true CN202914712U (en) 2013-05-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220562197 Expired - Lifetime CN202914712U (en) 2012-10-29 2012-10-29 Gearbox gear shift protection mechanism

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104455381A (en) * 2014-12-26 2015-03-25 中国重汽集团大同齿轮有限公司 Interlocking mechanism for main box and auxiliary box of multi-gear transmission of commercial vehicle
CN107218392A (en) * 2017-06-16 2017-09-29 陕西法士特齿轮有限责任公司 A kind of scope shelves interlock and operating method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104455381A (en) * 2014-12-26 2015-03-25 中国重汽集团大同齿轮有限公司 Interlocking mechanism for main box and auxiliary box of multi-gear transmission of commercial vehicle
CN107218392A (en) * 2017-06-16 2017-09-29 陕西法士特齿轮有限责任公司 A kind of scope shelves interlock and operating method
CN107218392B (en) * 2017-06-16 2023-08-08 陕西法士特齿轮有限责任公司 Range gear interlocking device and operation method

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C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term

Granted publication date: 20130501

CX01 Expiry of patent term