CN107218392B - Range gear interlocking device and operation method - Google Patents
Range gear interlocking device and operation method Download PDFInfo
- Publication number
- CN107218392B CN107218392B CN201710459007.3A CN201710459007A CN107218392B CN 107218392 B CN107218392 B CN 107218392B CN 201710459007 A CN201710459007 A CN 201710459007A CN 107218392 B CN107218392 B CN 107218392B
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- Prior art keywords
- interlocking
- shifting fork
- pin
- shaft
- fork shaft
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Classifications
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/36—Interlocking devices
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3408—Locking or disabling mechanisms the locking mechanism being moved by the final actuating mechanism
Abstract
According to the range gear interlocking device and the operating method, the shifting fork linkage shaft is added on the auxiliary box, the sliding pin and the shifting fork interlocking block which are in contact with the shifting fork linkage shaft are arranged on the main box, locking of the main box is achieved through matching of the shifting fork interlocking block and the sliding pin, locking of the auxiliary box is achieved through matching of the sliding pin and the shifting fork linkage shaft, and in the range gear conversion process of the auxiliary box, locking of the main box is guaranteed, and gear engagement is not allowed; after the range gear of the auxiliary box is converted, the main box is unlocked and can be put into gear. The patent adopts pure mechanical structure, simple structure, and the fault point is few, and whole product cost increases very little, has reached the mesh of range shelves interlocking.
Description
Technical Field
The invention belongs to the field of speed variators, and particularly relates to a range gear interlocking device and an operation method.
Background
Failure of the auxiliary box synchronizer is a common transmission failure mode, abnormal damage to the auxiliary box synchronizer is more easily caused by irregular operation, the range gear of the auxiliary box is not completely switched (high and low gears are not switched into place) by the most common irregular operation, the main box starts to shift, synchronous inertia is caused to be rapidly increased, and early damage to the synchronizer is caused.
In order to fundamentally solve the problem, the rear auxiliary box synchronizer is effectively protected, the service life of the transmission is prolonged, the irregular operation must be limited from the structural aspect of products, and the main box cannot be engaged under the condition that the range gear of the rear auxiliary box is not completely switched. Therefore, the patent designs a transmission range interlocking mechanism to prevent early damage to the synchronizer caused by improper operation.
Disclosure of Invention
The invention aims to provide a range gear interlocking device and an operation method thereof, which solve the problem that the range gear of a secondary box is not completely switched, a main box starts to shift, synchronous inertia is rapidly increased, and a synchronizer is damaged early.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the invention provides a range gear interlocking device which comprises a cylinder shifting fork shaft, a transmission main box upper cover and a transmission main box shell, wherein the cylinder shifting fork shaft, the transmission main box upper cover and the transmission main box shell are arranged in a cylinder;
the transmission main box shell is provided with a first mounting hole and a second mounting hole which is mutually perpendicular to the axis of the first mounting hole, a sliding pin matched with a shifting fork linkage shaft is arranged in the first mounting hole, and the other end of the sliding pin is connected with an end cover fixed on the transmission main box upper cover through a first spring;
a shifting fork interlocking block matched with an annular groove formed in the sliding column pin is arranged in the second mounting hole, and the other end of the shifting fork interlocking block is connected with a sliding mechanism matched with a gear shifting fork shaft.
Preferably, a gear tooth-shaped groove is formed in the contact end of the shifting fork linkage shaft and the sliding pin; the gear tooth-shaped groove is matched with the tooth-shaped end face on the sliding post pin.
Preferably, the gear tooth-shaped groove includes a high gear tooth-shaped groove and a low gear tooth-shaped groove.
When the main box is in gear, a cylinder piston in the auxiliary box pushes a cylinder to move, and the cylinder drives one side of a shifting fork linkage axial sliding pin to approach and contact with the sliding pin; continuing pushing the shifting fork linkage shaft until the annular groove on the sliding column pin is coaxial with the shifting fork shaft interlocking block and the sliding mechanism, and the shifting fork shaft interlocking block is embedded into the annular groove on the sliding column pin;
when the auxiliary box shifts gears, the cylinder piston pushes the cylinder to move, and the cylinder drives one side of the shifting fork linkage axial sliding pin to approach and contact with the sliding pin; and continuing to push the shifting fork linkage shaft until the sliding pin is not coaxial with the shifting fork shaft interlocking block and the sliding mechanism, and the shifting fork shaft interlocking block is extruded into the annular groove on the sliding pin.
Preferably, the sliding mechanism comprises a first interlocking pin, a second interlocking pin, a first interlocking steel ball and a second interlocking steel ball, wherein the shifting fork interlocking block is sequentially connected with the first interlocking pin, the first interlocking steel ball, the second interlocking pin and the second interlocking steel ball, meanwhile, the first interlocking pin is arranged in a pin hole of the 1/R shift fork shaft, the second interlocking pin is arranged in a pin hole of the 2/3 shift fork shaft, the first interlocking steel ball is positioned between a groove of the 1/R shift fork shaft and a groove of the 2/3 shift fork shaft, and the second interlocking steel ball is positioned between a groove of the 2/3 shift fork shaft and a groove of the 4/5 shift fork shaft.
Preferably, the shift fork interlocking block, the first interlocking pin, the first interlocking steel ball, the second interlocking pin and the second interlocking steel ball are coaxially arranged.
Preferably, a second spring, a third spring and a fourth spring are sequentially arranged on one side of the first spring on the upper cover of the transmission main box, wherein the second spring, the third spring and the fourth spring are respectively connected with a 1/R shift fork shaft, a 2/3 shift fork shaft and a 4/5 shift fork shaft at the lower end through self-locking steel balls.
Preferably, when the main box is in gear, the second spring, the third spring and the fourth spring respectively press the self-locking steel balls into arc grooves of corresponding gears on the 1/R shift fork shaft, the 2/3 shift fork shaft and the 4/5 shift fork shaft, so that the self-locking function of the main box is realized.
Preferably, when the auxiliary box shifts gears, the first interlocking pin, the first interlocking steel ball, the second interlocking pin and the second interlocking steel ball are respectively clamped in arc grooves of corresponding gears on the 1/R gear shifting fork shaft, the 2/3 gear shifting fork shaft and the 4/5 gear shifting fork shaft, so that all gears of the main box are locked at neutral positions.
Compared with the prior art, the invention has the beneficial effects that:
according to the range gear interlocking device provided by the invention, the shifting fork linkage shaft is firstly added on the auxiliary box, meanwhile, the sliding pin and the shifting fork interlocking block which are contacted with the shifting fork linkage shaft are arranged on the main box, the locking of the main box is realized through the matching of the shifting fork interlocking block and the sliding pin, the locking of the auxiliary box is realized through the matching of the sliding pin and the shifting fork linkage shaft, and the main box is locked and gear engagement is not allowed in the range gear conversion process of the auxiliary box; after the range gear of the auxiliary box is converted, the main box is unlocked and can be put into gear. The patent adopts pure mechanical structure, simple structure, and the fault point is few, and whole product cost increases very little, has reached the mesh of range shelves interlocking.
Furthermore, the locking of the high gear and the low gear of the auxiliary box is realized through the cooperation of the toothed end of the sliding pin and the toothed groove of the high/low gear on the shifting fork linkage shaft.
Drawings
FIG. 1 is a schematic view of an interlock mechanism with a range shift cylinder in a low shift position;
FIG. 2 is a schematic view of an interlock mechanism when a range cylinder is in the process of a high-low gear shift;
FIG. 3 is a schematic view of the interlock mechanism with the range shift cylinder in the top gear position;
the automatic transmission comprises a cylinder piston 2, a cylinder 3, a transmission main box upper cover 4, a sliding pin 5, a first spring 6, a 1/R shift fork shaft 7, a 2/3 shift fork shaft 8, a 4/5 shift fork shaft 9, a second interlocking steel ball 10, a second interlocking pin 11, a transmission shell 12, a shift fork shaft interlocking block 13, a shift fork linkage shaft 14, a range shift fork 15 and a cylinder shift fork shaft.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the range gear interlocking device provided by the invention comprises a cylinder piston 1, a cylinder 2, a transmission main box upper cover 3, a sliding pin 4, a first spring 5, a 1/R gear shifting fork shaft 6, a 2/3 gear shifting fork shaft 7, a 4/5 gear shifting fork shaft 8, a second interlocking steel ball 9, a second interlocking pin 10, a transmission shell 11, a shifting fork shaft interlocking block 12, a shifting fork linkage shaft 13, a range gear shifting fork 14 and a cylinder shifting fork shaft 15, wherein the cylinder shifting fork shaft 15 is arranged in a mounting hole on the cylinder 2, one end of the cylinder shifting fork shaft is connected with the cylinder piston 1, the other end of the cylinder shifting fork shaft is connected with the range gear shifting fork 14 in a matched manner, and the range gear shifting fork 14 is also connected with a shifting fork linkage shaft 13, wherein the shifting fork linkage shaft 13 and the cylinder shifting fork shaft 15 are not coaxial.
The transmission main box shell 11 is provided with a first mounting hole and a second mounting hole which is mutually perpendicular to the axis of the first mounting hole, a sliding pin 4 matched with a shifting fork linkage shaft 13 is arranged in the first mounting hole, and the other end of the sliding pin 4 is connected with an end cover fixed on the transmission main box upper cover 3 through a first spring 5;
a shifting fork interlocking block 12 matched with the sliding pin 4 is arranged in the second mounting hole, and the other end of the shifting fork interlocking block 12 is connected with a sliding mechanism matched with a gear shifting fork shaft.
The sliding mechanism comprises a first interlocking pin, a second interlocking pin 10, a first interlocking steel ball and a second interlocking steel ball 9, wherein a shifting fork interlocking block 12 is sequentially connected with the first interlocking pin, the first interlocking steel ball, the second interlocking pin 10 and the second interlocking steel ball 9. At the same time, the fork interlocking block 12, the first interlocking pin, the first interlocking steel ball, the second interlocking pin 10 and the second interlocking steel ball 9 are coaxially arranged.
The first interlocking pin is arranged in the pin hole of the 1/R shift fork shaft 6, the second interlocking pin 10 is arranged in the pin hole of the 2/3 shift fork shaft 7, the first interlocking steel ball is positioned between the groove of the 1/R shift fork shaft 6 and the groove of the 2/3 shift fork shaft 7, and the second interlocking steel ball 9 is positioned between the groove of the 2/3 shift fork shaft 7 and the groove of the 4/5 shift fork shaft 8.
The transmission main box upper cover 3 is further provided with a second spring, a third spring and a fourth spring in sequence on the right side of the first spring 5, wherein the second spring, the third spring and the fourth spring are respectively connected with the 1/R shift fork shaft 6, the 2/3 shift fork shaft 7 and the 4/5 shift fork shaft 8 at the lower ends through self-locking steel balls.
An annular groove is formed in the sliding pin 4, and the other end of the shifting fork shaft interlocking block 12 is matched with the groove.
The lower end of the sliding pin 4 is of a tooth-shaped structure which is matched with a tooth-shaped groove formed on the shifting fork linkage shaft 13.
Working principle:
when the range gear cylinder is in the low gear position, as shown in fig. 1:
the sliding pin 4 is clamped in the groove of the shifting fork linkage shaft 13 under the action of the spring 5, and the groove of the outer cylindrical surface of the sliding pin 4 is aligned with the centers of the shifting fork shaft interlocking block 12, the interlocking steel ball and the interlocking pin. At this time, any gear of the main box can be shifted, the shifting fork shaft 8 with 4/5 gear is taken as an example for shifting the shifting fork shaft 8 with 4/5 gear, the second interlocking steel ball 9 on the shaft side is extruded from the side groove of the shifting fork shaft 8, and the second interlocking steel ball 9 pushes a series of interlocking pins, the first interlocking steel ball 7 and the shifting fork shaft interlocking block 12 on the left side of the shifting fork shaft, until the leftmost shifting fork shaft interlocking block 12 is embedded into the groove of the sliding pin 4; namely, the auxiliary box is in a low gear position, and the main box can be put into gear. The self-locking spring is positioned on the self-locking steel ball in a compressed state, and when the main box shifts gears, the self-locking steel ball is pressed into an arc-shaped groove of the corresponding gear of the shifting fork shaft, so that the self-locking function is realized.
When the range shift cylinder is in the process of high and low shift, as shown in fig. 2, the cylinder piston 1 moves from the leftmost position of the cylinder 2 to the middle position under the action of left air pressure, so as to drive the cylinder shifting fork shaft 15, the range shift fork 14 and the shift fork linkage shaft 13 to move rightwards;
the tooth-shaped groove inclined surface of the shifting fork linkage shaft 13 pushes the sliding pin 4 to move upwards until the head of the sliding pin 4 is tightly attached to the outer cylindrical surface of the shifting fork linkage shaft 13 by the ejection groove; the sliding pin 4 moves upwards to extrude the shifting fork shaft interlocking block 12, and the shifting fork shaft interlocking block 12 pushes a series of interlocking pins and interlocking steel balls on the right side of the shifting fork shaft interlocking block until the second interlocking steel balls 9 are embedded into grooves of the 4/5 shift fork shaft 8. At the moment, all the gears of the main box are locked in the neutral position due to the fact that all the gears of the main box are blocked in the grooves of all the gears of the shifting fork shaft; namely, in the process of high and low gear conversion of the auxiliary box, the main box cannot be put into gear.
When the range shift cylinder is in the high-shift position, as shown in fig. 3, the piston 1 continues to move rightward from the intermediate position under the action of the left air pressure, so as to drive the cylinder shift fork shaft 15, the range shift fork 14 and the shift fork linkage shaft 13 to move rightward. The head of the sliding pin 4 falls into a groove on the left side of the shifting fork linkage shaft 13 from the outer cylindrical surface of the shifting fork linkage shaft 13. The sliding pin 4 moves downwards and the grooves of the outer cylindrical surface of the sliding pin are aligned with the centers of the shifting fork shaft interlocking block 12, the interlocking steel ball and the interlocking pin again. At this time, any gear of the main box can be shifted, the shifting fork shaft 8 with 4/5 gear is taken as an example for shifting the shifting fork shaft 8 with 4/5 gear, the second interlocking steel ball 9 on the shaft side is extruded from the side groove of the shifting fork shaft 8, and the second interlocking steel ball 9 pushes a series of interlocking pins, the first interlocking steel ball 7 and the shifting fork shaft interlocking block 12 on the left side of the shifting fork shaft, until the leftmost shifting fork shaft interlocking block 12 is embedded into the groove of the sliding pin 4; namely, the auxiliary box is in a high-grade position, and the main box can be put into gear.
Claims (8)
1. A method of operating a range gear interlock, comprising:
the range gear interlocking device comprises a cylinder shifting fork shaft (15) arranged in a cylinder (2), a transmission main box upper cover (3) and a transmission main box shell (11), wherein one end of the cylinder shifting fork shaft (15) is connected with a cylinder piston (1), the other end of the cylinder shifting fork shaft is connected with a range gear shifting fork (14) in a matched mode, and a shifting fork linkage shaft (13) is also connected on the range gear shifting fork (14) in a matched mode;
a first mounting hole and a second mounting hole which is mutually perpendicular to the axis of the first mounting hole are formed in the transmission main box shell (11), a sliding pin (4) matched with a shifting fork linkage shaft (13) is arranged in the first mounting hole, and the other end of the sliding pin (4) is connected with an end cover fixed on the transmission main box upper cover (3) through a first spring (5);
a shifting fork interlocking block (12) matched with an annular groove formed in the sliding pin (4) is arranged in the second mounting hole, and the other end of the shifting fork interlocking block (12) is connected with a sliding mechanism matched with a gear shifting fork shaft;
the operation method comprises the following steps:
when the main box is in gear, a cylinder piston (1) in the auxiliary box pushes a cylinder (2) to move, and the cylinder (2) drives a shifting fork linkage shaft (13) to approach one side of the sliding pin (4) and contact with the sliding pin (4); the shifting fork linkage shaft (13) is continuously pushed until the annular groove on the sliding pin (4) is coaxial with the shifting fork shaft interlocking block (12) and the sliding mechanism, and the shifting fork shaft interlocking block (12) is embedded into the annular groove on the sliding pin (4);
when the auxiliary box shifts gears, the cylinder piston (1) pushes the cylinder (2) to move, and the cylinder (2) drives the shifting fork linkage shaft (13) to approach one side of the sliding pin (4) and contact with the sliding pin (4); and continuously pushing the shifting fork linkage shaft (13) until the sliding pin (4) is not coaxial with the shifting fork shaft interlocking block (12) and the sliding mechanism, and the shifting fork shaft interlocking block (12) is extruded into an annular groove on the sliding pin (4).
2. A method of operating a range interlock device as claimed in claim 1, wherein: the sliding mechanism comprises a first interlocking pin, a second interlocking pin (10), a first interlocking steel ball and a second interlocking steel ball (9), wherein a shifting fork interlocking block (12) is sequentially connected with the first interlocking pin, the first interlocking steel ball, the second interlocking pin (10) and the second interlocking steel ball (9), meanwhile, the first interlocking pin is arranged in a pin hole of a 1/R shift fork shaft (6), the second interlocking pin (10) is arranged in a pin hole of a 2/3 shift fork shaft (7), the first interlocking steel ball is positioned between a groove of the 1/R shift fork shaft (6) and a groove of the 2/3 shift fork shaft (7), and the second interlocking steel ball (9) is positioned between a groove of the 2/3 shift fork shaft (7) and a groove of the 4/5 shift fork shaft (8).
3. A method of operating a range interlock device as claimed in claim 1, wherein: the shifting fork interlocking block (12), the first interlocking pin, the first interlocking steel ball, the second interlocking pin (10) and the second interlocking steel ball (9) are coaxially arranged.
4. A method of operating a range interlock device as claimed in claim 2, wherein: and a second spring, a third spring and a fourth spring are sequentially arranged on one side of the first spring (5) on the upper cover (3) of the main gearbox, wherein the second spring, the third spring and the fourth spring are respectively connected with a 1/R shift fork shaft (6), a 2/3 shift fork shaft (7) and a 4/5 shift fork shaft (8) at the lower ends through self-locking steel balls.
5. A method of operating a range interlock device as claimed in claim 4, wherein: when the main box is in gear, the second spring, the third spring and the fourth spring respectively press the self-locking steel balls into arc grooves of corresponding gears on the 1/R shift fork shaft (6), the 2/3 shift fork shaft (7) and the 4/5 shift fork shaft (8), so that the self-locking function of the main box is realized.
6. A method of operating a range interlock device as claimed in claim 4, wherein: when the auxiliary box shifts gears, the first interlocking pin, the first interlocking steel ball, the second interlocking pin (10) and the second interlocking steel ball (9) are respectively clamped in arc grooves of corresponding gears on the 1/R shift fork shaft (6), the 2/3 shift fork shaft (7) and the 4/5 shift fork shaft (8), so that all gears of the main box are locked at neutral positions.
7. A method of operating a range interlock device as claimed in claim 1, wherein: a gear tooth-shaped groove is formed in the contact end of the shifting fork linkage shaft (13) and the sliding pin (4); the gear tooth-shaped groove is matched with the tooth-shaped end face on the sliding pin (4).
8. The method of operating a range interlock device of claim 7 wherein: the gear tooth-shaped groove comprises a high gear tooth-shaped groove and a low gear tooth-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710459007.3A CN107218392B (en) | 2017-06-16 | 2017-06-16 | Range gear interlocking device and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710459007.3A CN107218392B (en) | 2017-06-16 | 2017-06-16 | Range gear interlocking device and operation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107218392A CN107218392A (en) | 2017-09-29 |
| CN107218392B true CN107218392B (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710459007.3A Active CN107218392B (en) | 2017-06-16 | 2017-06-16 | Range gear interlocking device and operation method |
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| CN (1) | CN107218392B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266526A (en) * | 2018-03-27 | 2018-07-10 | 陕西法士特汽车传动集团有限责任公司 | A kind of auxiliary box synchronizer protection mechanism |
| CN109882591A (en) * | 2019-02-28 | 2019-06-14 | 陕西法士特齿轮有限责任公司 | A kind of speed changer major-minor case mutual interlocking gear |
| CN110107685B (en) * | 2019-06-04 | 2024-01-19 | 郑州机械研究所有限公司 | Double-power interlocking type three-dimensional gear shifting mechanism |
| CN110966405A (en) * | 2019-12-29 | 2020-04-07 | 一汽解放汽车有限公司 | Special integrated gear shifting control mechanism for front and rear split-shell transmission |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0727227A (en) * | 1993-07-16 | 1995-01-27 | Mitsubishi Automob Eng Co Ltd | Shift rail interlock mechanism for transmission |
| CN2615438Y (en) * | 2003-04-14 | 2004-05-12 | 五莲县中兴机械制造有限公司 | Forced locking speed regulator for gear box |
| CN202914712U (en) * | 2012-10-29 | 2013-05-01 | 陕西法士特齿轮有限责任公司 | Gearbox gear shift protection mechanism |
| CN203670737U (en) * | 2013-12-20 | 2014-06-25 | 綦江齿轮传动有限公司 | Control mechanism of light transmission |
| CN205078768U (en) * | 2015-09-26 | 2016-03-09 | 陈春廷 | Gear box separation and reunion interlock of shifting |
| CN207005279U (en) * | 2017-06-16 | 2018-02-13 | 陕西法士特齿轮有限责任公司 | A kind of scope keeps off interlock |
-
2017
- 2017-06-16 CN CN201710459007.3A patent/CN107218392B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0727227A (en) * | 1993-07-16 | 1995-01-27 | Mitsubishi Automob Eng Co Ltd | Shift rail interlock mechanism for transmission |
| CN2615438Y (en) * | 2003-04-14 | 2004-05-12 | 五莲县中兴机械制造有限公司 | Forced locking speed regulator for gear box |
| CN202914712U (en) * | 2012-10-29 | 2013-05-01 | 陕西法士特齿轮有限责任公司 | Gearbox gear shift protection mechanism |
| CN203670737U (en) * | 2013-12-20 | 2014-06-25 | 綦江齿轮传动有限公司 | Control mechanism of light transmission |
| CN205078768U (en) * | 2015-09-26 | 2016-03-09 | 陈春廷 | Gear box separation and reunion interlock of shifting |
| CN207005279U (en) * | 2017-06-16 | 2018-02-13 | 陕西法士特齿轮有限责任公司 | A kind of scope keeps off interlock |
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| CN107218392A (en) | 2017-09-29 |
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