CN113217625B - Shifting fork structural part, mechanical gear locking structure and gearbox - Google Patents
Shifting fork structural part, mechanical gear locking structure and gearbox Download PDFInfo
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- CN113217625B CN113217625B CN202110604996.7A CN202110604996A CN113217625B CN 113217625 B CN113217625 B CN 113217625B CN 202110604996 A CN202110604996 A CN 202110604996A CN 113217625 B CN113217625 B CN 113217625B
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- gear
- shifting fork
- shifting
- rear auxiliary
- shaft
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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
- F16H63/32—Gear shift yokes, e.g. shift forks
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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
Abstract
The application discloses shift fork structure, mechanical lock shelves structure and gearbox relates to automotive transmission variable speed technical field, and it includes: the shifting fork structural part comprises an arc-shaped main rod and a convex baffle platform which are bent upwards, two ends of the arc-shaped main rod respectively extend outwards along the horizontal direction to form hinge rods, and the hinge rods are used for being vertically hinged to a supporting plate of the gearbox; the convex gear platform is fixedly arranged on one of the hinge rods, and when the plane of the arc-shaped main rod is a vertical plane, the convex gear platform can be used for abutting against a rear auxiliary shifting fork shaft of the gearbox. The application also discloses a mechanical gear locking structure comprising the shifting fork structural part and a gearbox comprising the mechanical gear locking structure; when the back auxiliary box is hung with high grade, the first gear locking function of the main box is realized, and two gears with safety risks are locked, so that the gear sequence of the gearbox is more orderly.
Description
Technical Field
The application relates to the technical field of automobile transmission and speed change, in particular to a shifting fork structural part, a mechanical gear locking structure and a gearbox.
Background
At present, a gearbox arranged in an automobile is generally a fourteen-gear gearbox, and the fourteen-gear gearbox adopts a main box, a rear auxiliary box and a front auxiliary box to perform matching gear shifting. Specifically, in a fourteen-gear transmission, the main box contains four gears, the rear auxiliary box contains two gears, and the front auxiliary box contains two gears, and the product of four times two is sixteen, that is, the fourteen-gear transmission actually has sixteen gears, but two of the gears are not commonly used, but there is a hidden safety risk.
To solve the above problem, those skilled in the art need to lock two gears that are not commonly used, so as to eliminate the risk of disorder of gear.
Disclosure of Invention
To the defect that exists among the prior art, the aim at of this application provides a shift fork structure, mechanical lock shelves structure and gearbox, when the back auxiliary tank hung high-grade, realizes the first shelves lock shelves function of main tank, has locked two gears that have the safety risk for the gear order of gearbox is more orderly.
In order to achieve the above purposes, the technical scheme is as follows: a shifting fork structural part is arranged in a gearbox of an automobile and comprises an arc-shaped main rod and a convex gear platform which are bent upwards, two ends of the arc-shaped main rod respectively extend outwards along the horizontal direction to form hinge rods, and the hinge rods are used for being vertically hinged to a supporting plate of the gearbox; the convex gear platform is fixedly arranged on one of the hinge rods, and when the plane of the arc-shaped main rod is a vertical plane, the convex gear platform can be used for abutting against a rear auxiliary shifting fork shaft of the gearbox.
On the basis of the technical scheme, the two ends of the arc-shaped main rod further extend downwards vertically and are provided with pulling pins respectively, and the pulling pins are used for engaging gears at different gears.
On the basis of the technical scheme, the shifting fork structural part also comprises a vertical rod, and the vertical rod is vertically and fixedly arranged on a hinged rod; the convex baffle platform is fixed on the vertical rod; the vertical rod is used for hinging and fixing a gear shifting pulling plate of the gearbox.
The application also discloses an embodiment of a mechanical lock gear structure, wherein the mechanical lock gear structure comprises a rear auxiliary shifting fork shaft and the shifting fork structural member;
when the rear auxiliary shifting fork shaft is in high gear and the shifting fork structural member is in neutral gear, the rear auxiliary shifting fork shaft and the convex gear table are in the same straight line, and the end part of the rear auxiliary shifting fork shaft is abutted against the convex gear table.
On the basis of the technical scheme, the mechanical gear locking structure further comprises a rear auxiliary box cylinder and a rear auxiliary shifting fork, the rear auxiliary shifting fork shaft is fixedly arranged at the top end of the rear auxiliary shifting fork in a penetrating manner, the rear auxiliary shifting fork is arc-shaped with a downward opening, and the bottom end of the rear auxiliary shifting fork is used for being hinged with a connecting piece in the gearbox;
when one side of the rear auxiliary box cylinder, which deviates from the rear auxiliary shifting fork shaft, is ventilated, the rear auxiliary shifting fork shaft is in a high gear hanging mode, and the end part of the rear auxiliary shifting fork shaft abuts against a convex gear table of a shifting fork structural member positioned in a neutral gear.
On the basis of the technical scheme, the two ends of the arc-shaped main rod of the shifting fork structural part of the mechanical lock gear structure further extend downwards vertically and are provided with pulling pins respectively, and the pulling pins are used for being attached to gears of different gears.
On the basis of the technical scheme, the mechanical gear locking structure further comprises a gear shifting pulling plate and a gear shifting finger, wherein the gear shifting pulling plate is provided with a gear lacking opening, and the gear shifting finger is provided with two clamping jaws; when the gear shifting finger rotates clockwise or anticlockwise, one of the clamping jaws of the gear shifting finger shifts the gear shifting pulling plate through the gear missing opening;
the shifting fork structural part also comprises a vertical rod, and the vertical rod is vertically and fixedly arranged on a hinge rod; the convex baffle platform is fixed on the vertical rod; the end part of the vertical rod is hinged to the end part of the gear shifting pulling plate;
when the rear auxiliary shifting fork shaft is in low gear engagement, the shifting finger can engage a first gear or a reverse gear through the shifting pull plate and the shifting fork structural member;
when the rear auxiliary shifting fork shaft is in high gear, the shifting finger can be used for engaging reverse gear through the shifting pulling plate and the shifting fork structural member
When the shifting finger is used for engaging a first gear through the shifting pulling plate and the shifting fork structural member, the end part of the rear auxiliary shifting fork shaft is abutted against a convex gear table of the shifting fork structural member, so that the shifting fork structural member is in a neutral position.
The application also discloses an embodiment of the gearbox, which comprises a reverse gear, a first gear and the mechanical gear locking structure; the reverse gear is arranged on one side of the shifting fork structure member facing the rear auxiliary shifting fork shaft, and the first gear is arranged on one side of the shifting fork structure member departing from the rear auxiliary shifting fork shaft;
when the rear auxiliary shifting fork shaft is in low gear, the shifting fork structural part can be used for shifting a reverse gear to a reverse gear and can also be used for shifting a first gear to a first gear;
when the rear auxiliary shifting fork shaft is in a high gear state, the shifting fork structural part can be used for shifting a reverse gear to a reverse gear; when the shifting fork structural member is shifted to a gear, the convex gear table of the shifting fork structural member is propped against the end part of the rear auxiliary shifting fork shaft.
On the basis of the technical scheme, the mechanical gear locking structure further comprises a rear auxiliary box cylinder and a rear auxiliary shifting fork, the rear auxiliary shifting fork shaft is fixedly arranged at the top end of the rear auxiliary shifting fork in a penetrating manner, the rear auxiliary shifting fork is arc-shaped with a downward opening, and the bottom end of the rear auxiliary shifting fork is used for being hinged with a connecting piece in the gearbox;
when one side of the rear auxiliary box cylinder, which is far away from the rear auxiliary shifting fork shaft, is ventilated, the rear auxiliary shifting fork shaft is in a high gear state, and the end part of the rear auxiliary shifting fork shaft is abutted against a convex gear table of a shifting fork structural member positioned in a neutral gear state;
two ends of an arc-shaped main rod of a shifting fork structural member of the mechanical gear locking structure are also vertically downwards and respectively outwards extended to form pulling pins, and the pulling pins are used for being hung on gears of different gears;
when the shifting fork structural part is in a first gear, the pulling pin is attached to the first gear, and when the shifting fork structural part is in a reverse gear, the pulling pin is attached to the reverse gear.
On the basis of the technical scheme, the mechanical gear locking structure further comprises a gear shifting pulling plate and a gear shifting finger, wherein the gear shifting pulling plate is provided with a gear lacking opening, and the gear shifting finger is provided with two clamping jaws; when the gear shifting finger rotates clockwise or anticlockwise, one of the clamping jaws of the gear shifting finger shifts the gear shifting pulling plate through the gear missing opening;
the shifting fork structural part also comprises a vertical rod, and the vertical rod is vertically and fixedly arranged on a hinge rod; the convex baffle platform is fixed on the vertical rod; the end part of the vertical rod is hinged to one end of the gear shifting pulling plate;
the gearbox also comprises a front auxiliary shifting fork and a front auxiliary shifting fork shaft, the front auxiliary shifting fork is arranged relative to the rear auxiliary shifting fork, the front auxiliary shifting fork shaft is arranged relative to the rear auxiliary shifting fork shaft, the front auxiliary shifting fork shaft is fixedly arranged at the top end of the front auxiliary shifting fork in a penetrating manner, the front auxiliary shifting fork is in an arc shape with a downward opening, and the top end of the front auxiliary shifting fork is provided with a groove support platform with an upward opening; the other end of the gear shifting pulling plate is erected on the groove supporting table;
when the rear auxiliary shifting fork shaft is in low gear engagement, the shifting finger can engage a first gear or a reverse gear through the shifting pull plate and the shifting fork structural member;
when the rear auxiliary shifting fork shaft is in a high gear state, the shifting fingers can be in reverse gear through the shifting pulling plate and the shifting fork structural member;
when the shifting finger is used for engaging a first gear through the shifting pulling plate and the shifting fork structural member, the end part of the rear auxiliary shifting fork shaft is abutted against a convex gear table of the shifting fork structural member, so that the shifting fork structural member is in a neutral position.
The technical scheme who provides this application brings beneficial effect includes:
1. the shifting fork structural part comprises an arc-shaped main rod, two ends of the arc-shaped main rod respectively extend outwards along the horizontal direction to form hinge rods, a convex gear table is arranged on one hinge rod, a rear auxiliary shifting fork shaft of the gearbox is used for hanging high gears, and when the plane of the arc-shaped main rod of the shifting fork structural part is a vertical plane (namely the shifting fork structural part is in neutral gear), the convex gear table of the shifting fork structural part is supported by the rear auxiliary shifting fork shaft, so that the shifting fork structural part can only be kept in the neutral gear position, or is in reverse gear, and cannot be in first gear; the application of the convex gear platform of the shifting fork structure member realizes the locking of the shifting fork structure member, so that the gear sequence of the gearbox is more orderly and reliable.
2. According to the mechanical gear locking structure, the shifting fork structural part is installed, when the rear auxiliary shifting fork shaft is in a high gear state and the shifting fork structural part is in a neutral gear state (shown in a figure), the rear auxiliary shifting fork shaft and the convex gear table are in the same straight line, and the convex gear table is supported by the rear auxiliary shifting fork shaft, so that the shifting fork structural part can only be kept in the neutral gear position, or is in a reverse gear state, and cannot be in a first gear state; the mechanical gear locking structure realizes the gear locking of the shifting fork structural member, eliminates the risk of disordered gear sequence of the gearbox, and ensures that the gear sequence of the gearbox is more orderly and reliable; specifically, in a fourteen-gear transmission, the main box comprises four gears, the rear auxiliary box comprises two gears, and the front auxiliary box comprises two gears, and the product of four times two is sixteen in comprehensive view; when the rear auxiliary shifting fork shaft of the rear auxiliary box is in a high gear state, the shifting fork structural member of the main box cannot be in a first gear state, two gears of the corresponding rear auxiliary box fail, the locked gear is xx, the actual sixteen-gear is changed into fourteen-gear, two gears with safety risks are locked, and the risk of disorder of gear sequences is eliminated.
3. The application of the gearbox is provided with the mechanical gear locking structure, the reverse gear and the first gear, and when the rear auxiliary shifting fork shaft is in low gear engagement, the shifting fork structural member can engage the reverse gear to the reverse gear and also can engage the first gear to the first gear. When the rear auxiliary shifting fork shaft is in high gear, the shifting fork structural part can be used for shifting a reverse gear to the reverse gear; when the shifting fork structural member is shifted to one gear, the convex gear table of the shifting fork structural member is propped against the end part of the rear auxiliary shifting fork shaft, so that the shifting fork structural member cannot be shifted to one gear, and the gear locking function is realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of a mechanical lock gear structure including a shift fork structure according to an embodiment of the present disclosure.
Fig. 2 is a schematic diagram of a rear auxiliary box shifted to a high-gear main box shifted to neutral according to a mechanical lock structure provided in an embodiment of the present application.
Fig. 3 is a schematic diagram of a rear sub-box low-gear main box neutral gear of a mechanical gear locking structure according to an embodiment of the present application.
Fig. 4 is a schematic diagram of a rear sub-box low-gear main box reverse gear of a mechanical gear locking structure according to an embodiment of the present application.
Fig. 5 is a schematic diagram of a rear auxiliary box with a mechanical gear locking structure for engaging a high-gear main box with a reverse gear.
Fig. 6 is a schematic structural diagram of a shift fork structure according to an embodiment of the present application.
Fig. 7 is a schematic structural view of a front pair shift fork provided in the embodiment of the present application.
Reference numerals:
1. a rear sub-tank cylinder; 2. a rear auxiliary shift fork shaft; 3. a rear auxiliary shifting fork; 4. a support plate; 5. a shift fork structure; 6. a shifting pulling plate; 7. a gear shifting finger; 8. a front auxiliary shifting fork; 9. a front auxiliary shifting fork shaft; 10. a first gear; 11. a reverse gear; 13. a groove saddle; 50. an arc-shaped main rod; 51. a hinged lever; 52. pulling the pin out; 53. a vertical rod; 54. a convex baffle platform; 61. a notch.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 and 6, the present application discloses an embodiment of a shift fork structure, which is disposed in a transmission of an automobile for shifting gears of the automobile. Specifically, shift fork structure 5 contains the arc mobile jib 50 and the protruding shelves 54 of kickup, and the both ends of arc mobile jib 50 are located same horizontal position, and the both ends of arc mobile jib 50 outwards extend respectively along the level and set up hinge bar 51, and hinge bar 51 is used for the vertical hinged setting in the backup pad 4 of gearbox. The arc-shaped main rod 50 is hinged between the two support plates 4 through the ends of the two hinge rods 51. The convex gear platform 54 is fixedly arranged on one of the hinged rods 51, and the arc main rod 50 swings around the two support plates 4 in the actual gear shifting process to realize gear shifting. When the plane of the arc main rod 50 is a vertical plane (i.e. the shifting fork structure is in neutral), the convex platform 54 is used for enabling the shifting fork structure to be supported by the rear auxiliary shifting fork shaft 2 of the transmission in the high-grade position.
Specifically, when the rear auxiliary shift fork shaft 2 of the transmission is in high gear, and the plane of the arc main rod 50 of the shift fork structural member 5 is a vertical plane (i.e. the shift fork structural member is in neutral), the convex block 54 of the shift fork structural member is supported by the rear auxiliary shift fork shaft 2, so that the shift fork structural member can only be kept in the neutral position, or reverse gear is engaged, and a first gear cannot be engaged. The shift fork structure 5 of this application sets up protruding shelves 54, and protruding shelves 54 has realized the lock shelves of shift fork structure for the gear of gearbox is orderly reliable more.
In one embodiment, the two ends of the arc-shaped main rod 50 of the shifting fork structural member 5 are further provided with pulling and inserting pins 52 respectively extending outwards along the vertical downward direction, and the pulling and inserting pins 52 are used for engaging gears of different gears; when the shifting fork structural member 5 is in the neutral position, the pulling pin 52 is in the suspension position; when the shifting fork structural part 5 is shifted to a first gear, the shifting pins 52 are abutted to the corresponding gears; when the shifting fork structural part 5 is shifted to a reverse gear, the shifting pins 52 are also hung on the corresponding gears; the arrangement of the puller pin 52 provides a structural basis for shifting of the fork structure 5.
Furthermore, the shifting fork structural part 5 further comprises a vertical rod 53, and the vertical rod 53 is vertically and fixedly arranged on one hinge rod 51; the convex block platform 54 is fixed on the vertical rod 53; the vertical rod 53 is used for hinging and fixing the gear shifting pulling plate 6 of the gearbox. In the actual gear shifting process, the gear shifting pulling plate 6 drives the whole shifting fork structural member 5 to rotate around the hinge rod 51 through the vertical rod 53, so that the pin 52 of the shifting fork structural member 5 can be switched to different gears.
As shown in fig. 1, the present application further discloses an embodiment of a mechanical lock gear structure, which includes a rear sub-shift fork shaft 2 and the above-mentioned shift fork structure 5. When the rear auxiliary declutch shift shaft 2 is in high gear and the declutch shift structure 5 is in neutral (see fig. 2), the rear auxiliary declutch shift shaft 2 and the boss 54 are in the same straight line, and the end of the rear auxiliary declutch shift shaft 2 abuts against the boss 54. At this time, the boss 54 is held by the rear sub-fork shaft 2, so that the fork structure can be held only in the neutral position, or the reverse gear is engaged, and the first gear cannot be engaged. The mechanical gear locking structure realizes the gear locking of the shifting fork structural part, eliminates the disordered risk of the gear sequence of the gearbox, and ensures that the gear sequence of the gearbox is more orderly and reliable.
Specifically, in a fourteen-gear transmission, the main box comprises four gears, the rear auxiliary box comprises two gears, and the front auxiliary box comprises two gears, and the product of four times two is sixteen in comprehensive view; when the rear auxiliary shifting fork shaft 2 of the rear auxiliary box is in a high gear state, the shifting fork structural member 5 of the main box cannot be shifted by one gear, two gears of the corresponding rear auxiliary box fail, the locked gear is 1x1x2 which is 2, the actual gear of the sixty-six gear is changed into a fourteen gear, and the risk of disordered gear sequences is eliminated.
In one embodiment, the mechanical gear locking structure further comprises a rear auxiliary box cylinder 1 and a rear auxiliary shifting fork 3, wherein a rear auxiliary shifting fork shaft 2 is fixedly arranged at the top end of the rear auxiliary shifting fork 3 in a penetrating manner, the rear auxiliary shifting fork 3 is in an arc shape with a downward opening, and the bottom end of the rear auxiliary shifting fork 3 is used for being hinged with a connecting piece in the gearbox;
when the rear auxiliary box cylinder 1 is ventilated at one side deviating from the rear auxiliary shifting fork shaft 2, the rear auxiliary shifting fork shaft 2 of the rear auxiliary box is in a high-grade state, the end part of the rear auxiliary shifting fork shaft 2 abuts against the convex gear table 54 of the shifting fork structural member 5 positioned in the neutral gear, so that the shifting fork structural member 5 cannot be in a first-grade state, and the risk of gear disorder is eliminated.
In one embodiment, the two ends of the arc-shaped main rod 50 of the fork structure of the mechanical gear shift structure are further provided with pulling pins 52 respectively extending outwards along the vertical direction, and the pulling pins 52 are used for being engaged with gears of different gears. When the shifting fork structural member 5 is in the neutral position, the pulling pin 52 is in the suspension position; when the shifting fork structural part 5 is shifted to a first gear, the shifting pins 52 are abutted to the corresponding gears; when the shifting fork structural part 5 is shifted to a reverse gear, the shifting pins 52 are also hung on the corresponding gears; the arrangement of the puller pin 52 provides a structural basis for shifting of the fork structure 5.
Furthermore, the mechanical gear locking structure also comprises a gear shifting pull plate 6 and a gear shifting finger 7, wherein the gear shifting pull plate 6 is provided with a gear missing opening 61, and the gear shifting finger 7 is provided with two clamping jaws; when the gear shifting finger 7 rotates clockwise or anticlockwise, one of the clamping jaws of the gear shifting finger 7 shifts the gear shifting pull plate 6 through the notch 61. As shown in fig. 1, when the shift finger 7 rotates clockwise, the shift pulling plate 6 moves leftwards, driving the shifting fork structure 5 to rotate, and the pulling pin 52 of the shifting fork structure 5 engages with the gear rightwards. When the gear shifting finger 7 rotates anticlockwise, the gear shifting pulling plate 6 moves rightwards to drive the shifting fork structural member 5 to rotate, and the pulling pin 52 of the shifting fork structural member 5 is left to be attached to the gear.
In one embodiment, the fork structure 5 further comprises a vertical rod 53, the vertical rod 53 being vertically fixed to one of the articulated rods 51; the convex block platform 54 is fixed on the vertical rod 53; the end of the vertical rod 53 is hinged to the end of the shifting pulling plate 6.
As shown in fig. 3 and 4, when the rear sub-carrier 2 is shifted to the low gear, the shift finger 7 can shift to the first gear or the reverse gear by the shift arm 6 and the fork structure 5.
As shown in fig. 5, when the rear sub-shift rail 2 is shifted to the high gear, the shift finger 7 can shift to the reverse gear via the shift pulling plate 6 and the shift fork structure 5.
When the shift finger 7 is engaged with the first gear by the shift pulling plate 6 and the shift fork structure 5, the end of the rear sub shift fork shaft 2 abuts against the boss 54 of the shift fork structure 5, so that the shift fork structure 5 cannot be engaged with the first gear and is always maintained at the neutral position.
The mechanical gear locking structure is provided with a shifting fork structural member with a convex gear platform 54, the shifting fork structural member with the convex gear platform 54 enables a rear auxiliary shifting fork shaft 2 of a rear auxiliary box to be in high gear hanging, the shifting fork structural member of a main box cannot be in first gear hanging, gear locking of the shifting fork structural member is achieved, and the gear sequence of the gearbox is more orderly and reliable.
It should be noted that, in the embodiments of the present application, only a part of the structure in the transmission is described in detail for describing the mechanical lock gear structure of the present application, and the components (such as the support plate 4) having no specific connection relationship and position relationship are known as well-known connection position relationship in the transmission.
As shown in fig. 1, the present application discloses an embodiment of a transmission, which includes a reverse gear 11, a first gear 10, and the above-mentioned mechanical gear-locking structure; the reverse gear 11 is disposed on a side of the fork structure 5 facing the rear auxiliary fork shaft 2, and the first gear 10 is disposed on a side of the fork structure 5 facing away from the rear auxiliary fork shaft 2.
When the rear auxiliary shifting fork shaft 2 is in low gear, the shifting fork structural member 5 can be used for engaging a reverse gear to the reverse gear 11 and can also be used for engaging a first gear to the first gear 10. When the rear auxiliary shifting fork shaft 2 is in high gear, the shifting fork structural part 5 can be used for shifting a reverse gear to the reverse gear 11; when the shifting fork structure 5 is shifted to one gear, the convex gear platform 54 of the shifting fork structure 5 is supported by the end of the rear auxiliary shifting fork shaft 2, so that the shifting fork structure 5 cannot be shifted to one gear, and the gear locking function is realized.
In one embodiment, the mechanical gear locking structure further comprises a rear auxiliary box cylinder 1 and a rear auxiliary shifting fork 3, the rear auxiliary shifting fork shaft 2 is fixed on the top end of the rear auxiliary shifting fork 3 in a penetrating manner, the rear auxiliary shifting fork 3 is in an arc shape with a downward opening, and the bottom end of the rear auxiliary shifting fork is used for hinging a connecting piece in the gearbox.
When one side of the rear auxiliary box cylinder 1, which is far away from the rear auxiliary declutch shift shaft 2, is ventilated, the rear auxiliary declutch shift shaft 2 is in high gear, and the end part of the rear auxiliary declutch shift shaft 2 abuts against the convex gear table 54 of the shifting fork structural part 5 in the neutral gear. When the rear auxiliary box cylinder 1 is ventilated to one side of the rear auxiliary declutch shift shaft 2, the rear auxiliary declutch shift shaft 2 is in low gear.
Specifically, two ends of the arc-shaped main rod 50 of the shifting fork structural member of the mechanical gear locking structure are further provided with pulling pins 52 respectively extending outwards downwards vertically, and the pulling pins 52 are used for being attached to gears of different gears.
When the shift fork structure 5 is in first gear, the pin 52 engages with the first gear 10, and when the shift fork structure 5 is in reverse gear, the pin 52 engages with the reverse gear 11.
Furthermore, the mechanical gear locking structure also comprises a gear shifting pull plate 6 and a gear shifting finger 7, wherein the gear shifting pull plate 6 is provided with a gear missing opening 61, and the gear shifting finger 7 is provided with two clamping jaws; when the gear shifting finger 7 rotates clockwise or anticlockwise, one of the clamping jaws of the gear shifting finger 7 shifts the gear shifting pull plate 6 through the notch 61. The shifting fork structural part 5 further comprises a vertical rod 53, and the vertical rod 53 is vertically and fixedly arranged on one hinge rod 51; the convex block platform 54 is fixed on the vertical rod 53; the end of the vertical rod 53 is hinged to one end of the shifting pulling plate 6.
As shown in fig. 1, when the shift finger 7 rotates clockwise, the shift pulling plate 6 moves leftwards, driving the shifting fork structure 5 to rotate, and the pin 52 of the shifting fork structure 5 engages with a gear right. When the gear shifting finger 7 rotates counterclockwise, the gear shifting pulling plate 6 moves rightward to drive the shifting fork structural member 5 to rotate, and the pin 52 of the shifting fork structural member 5 engages with the reverse gear leftward.
As shown in fig. 7, the transmission further includes a front auxiliary shifting fork 8 and a front auxiliary shifting fork shaft 9, the front auxiliary shifting fork 8 is arranged relative to the rear auxiliary shifting fork 3, the front auxiliary shifting fork shaft 9 is arranged relative to the rear auxiliary shifting fork shaft 2, the front auxiliary shifting fork shaft 9 is fixed at the top end of the front auxiliary shifting fork 8 in a penetrating manner, the front auxiliary shifting fork 8 is arc-shaped with a downward opening, and the top end of the front auxiliary shifting fork 8 is provided with a groove saddle 13 with an upward opening; the other end of the shifting pulling plate 6 is erected on the groove supporting table 13.
The front auxiliary shifting fork 8 of the gearbox of the application is provided with the groove supporting table 13 with the opening facing upwards, so that one end of the shifting pulling plate 6 is hinged to the end of the vertical rod 53, the other end of the shifting pulling plate is erected in the groove supporting table 13, the two supporting points support the shifting pulling plate 6, the shifting pulling plate 6 is stably supported, and the shifting operation is more stable and reliable.
When the rear auxiliary shifting fork shaft 2 is in low gear, the shifting finger 7 can be in first gear or reverse gear through the shifting pulling plate 6 and the shifting fork structural member 5;
when the rear auxiliary shifting fork shaft 2 is in high gear, the shifting finger 7 can be in reverse gear through the shifting pull plate 6 and the shifting fork structural member 5;
when the shifting finger 7 is shifted to a first gear by the shifting pull plate 6 and the shifting fork structural member 5, the end part of the rear auxiliary shifting fork shaft 2 is abutted against the convex gear platform 54 of the shifting fork structural member 5, so that the shifting fork structural member 5 is in a neutral gear position, the shifting fork structural member 5 cannot be shifted to the first gear, and the gear locking function is realized.
It should be noted that in the embodiments of the present application, only a part of the structure in the transmission is described in detail for describing the gear locking function of the present application, for example, the main box includes four gears, but only two gears (reverse gear and first gear) adjacent to the shift fork structure are described in detail.
The shifting fork structural part comprises an arc-shaped main rod 50, two ends of the arc-shaped main rod 50 extend outwards along the horizontal direction to form hinged rods 51, a convex gear table 54 is arranged on one hinged rod 51, a high gear is hung on a rear auxiliary shifting fork shaft 2 of the gearbox, and when the plane of the arc-shaped main rod 50 of the shifting fork structural part is a vertical plane (namely the shifting fork structural part is in a neutral gear), the convex gear table 54 of the shifting fork structural part is supported by the rear auxiliary shifting fork shaft 2, so that the shifting fork structural part can only be kept in the neutral gear position or is in a reverse gear, and a first gear cannot be hung; the protruding shelves 54 of the shift fork structure of this application, protruding shelves 54 have realized the lock shelves of shift fork structure for the gear of gearbox is orderly reliable more.
According to the mechanical gear locking structure, a shifting fork structural member is installed, when the rear auxiliary shifting fork shaft 2 is in a high gear state and the shifting fork structural member 5 is in a neutral position (see fig. 2), the rear auxiliary shifting fork shaft 2 and the convex gear table 54 are in the same straight line, and the convex gear table 54 is supported by the rear auxiliary shifting fork shaft 2, so that the shifting fork structural member can only be kept in the neutral position, or is in a reverse gear state, and cannot be in a first gear state; the mechanical gear locking structure realizes the gear locking of the shifting fork structural member, eliminates the risk of disordered gear sequence of the gearbox, and ensures that the gear sequence of the gearbox is more orderly and reliable; specifically, in a fourteen-gear transmission, the main box comprises four gears, the rear auxiliary box comprises two gears, and the front auxiliary box comprises two gears, and the product of four times two is sixteen in comprehensive view; when the rear auxiliary shift fork shaft 2 of the rear auxiliary box is in a high gear, the shift fork structural member 5 of the main box cannot be shifted to one gear, two gears of the corresponding rear auxiliary box fail, the locked gear is 1x1x2 equal to 2, the actual sixteen-gear is changed into fourteen-gear, two gears with safety risks are locked, and the risk of disordered gear sequences is eliminated.
The application of the gearbox is provided with a mechanical gear locking structure, a reverse gear 11 and a first gear 10, when a rear auxiliary shifting fork shaft 2 is in low gear shifting, a shifting fork structural part 5 can be used for shifting a reverse gear to the reverse gear 11 and can also be used for shifting a first gear to the first gear 10. When the rear auxiliary shifting fork shaft 2 is in a high gear state, the shifting fork structural member 5 can shift a reverse gear to the reverse gear 11; when the shifting fork structure 5 is shifted to one gear, the convex gear platform 54 of the shifting fork structure 5 is supported by the end of the rear auxiliary shifting fork shaft 2, so that the shifting fork structure 5 cannot be shifted to one gear, and the gear locking function is realized.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description is only an example of the present application, and is provided to enable any person skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a shift fork structure, sets up in the gearbox of car which characterized in that: the shifting fork structural part (5) comprises an arc-shaped main rod (50) and a convex block platform (54), wherein the arc-shaped main rod (50) is bent upwards, two ends of the arc-shaped main rod (50) respectively extend outwards along the horizontal direction to form hinge rods (51), and the hinge rods (51) are vertically hinged to a support plate (4) of the gearbox; the convex gear table (54) is fixedly arranged on one of the hinge rods (51), and when the plane of the arc-shaped main rod (50) is a vertical plane, the convex gear table (54) can be used for abutting against a rear auxiliary shifting fork shaft (2) of the gearbox.
2. A fork structure as claimed in claim 1, wherein: two ends of the arc-shaped main rod (50) are also respectively provided with a pulling pin (52) in an outward extending mode along the vertical downward direction, and when the shifting fork structural part (5) is located at the neutral position, the pulling pins (52) are located at the suspended position; when the shifting fork structural member (5) is in first gear or reverse gear, the pulling pin (52) is contacted with the corresponding gear.
3. A fork structure as claimed in claim 1, wherein: the shifting fork structural part (5) further comprises a vertical rod (53), and the vertical rod (53) is vertically and fixedly arranged on a hinged rod (51); the convex baffle platform (54) is fixed on the vertical rod (53); the vertical rod (53) is used for hinging and fixing a gear shifting pulling plate (6) of the gearbox.
4. The utility model provides a mechanical lock shelves structure which characterized in that: the mechanical lock gear structure comprises a rear auxiliary shifting fork shaft (2) and the shifting fork structure member (5) according to claim 1;
when the rear auxiliary declutch shift shaft (2) is in high gear and the shifting fork structural member (5) is in neutral gear, the rear auxiliary declutch shift shaft (2) and the convex gear table (54) are on the same straight line, and the end part of the rear auxiliary declutch shift shaft (2) is propped against the convex gear table (54).
5. The mechanical lock stop structure of claim 4, wherein: the mechanical gear locking structure further comprises a rear auxiliary box cylinder (1) and a rear auxiliary shifting fork (3), the rear auxiliary shifting fork shaft (2) is fixedly arranged at the top end of the rear auxiliary shifting fork (3) in a penetrating mode, the rear auxiliary shifting fork (3) is in an arc shape with a downward opening, and the bottom end of the rear auxiliary shifting fork is used for being hinged to a connecting piece in the gear box;
when one side of the rear auxiliary box cylinder (1) deviating from the rear auxiliary shifting fork shaft (2) is ventilated, the rear auxiliary shifting fork shaft (2) is hung with a high gear, and the end part of the rear auxiliary shifting fork shaft (2) is propped against a convex gear table (54) of a shifting fork structural part (5) positioned in a neutral gear.
6. The mechanical lock stop structure of claim 4, wherein: the two ends of the arc-shaped main rod (50) of the shifting fork structural member of the mechanical gear locking structure are also provided with pulling pins (52) which extend downwards vertically and outwards respectively, and the pulling pins (52) are used for being attached to gears of different gears.
7. The mechanical lock stop structure of claim 4, wherein: the mechanical gear locking structure further comprises a gear shifting pull plate (6) and a gear shifting finger (7), the gear shifting pull plate (6) is provided with a gear missing opening (61), and the gear shifting finger (7) is provided with two clamping jaws; when the gear shifting finger (7) rotates clockwise or anticlockwise, one claw of the gear shifting finger (7) shifts the gear shifting pull plate (6) through the gear missing opening (61);
the shifting fork structural part (5) further comprises a vertical rod (53), and the vertical rod (53) is vertically and fixedly arranged on a hinged rod (51); the convex baffle platform (54) is fixed on the vertical rod (53); the end part of the vertical rod (53) is hinged to the end part of the gear shifting pulling plate (6);
when the rear auxiliary shifting fork shaft (2) is in low gear engagement, the gear shifting finger (7) can engage a first gear or a reverse gear through the gear shifting pull plate (6) and the shifting fork structural member (5);
when the rear auxiliary shifting fork shaft (2) is in a high gear state, the gear shifting fingers (7) can be in a reverse gear state through the gear shifting pull plate (6) and the shifting fork structural member (5);
when the gear shifting finger (7) is used for engaging a first gear through the gear shifting pulling plate (6) and the shifting fork structural member (5), the end part of the rear auxiliary shifting fork shaft (2) is propped against a convex gear table (54) of the shifting fork structural member (5), so that the shifting fork structural member (5) is in a neutral gear position.
8. A transmission, characterized by: the gearbox comprises a reverse gear (11), a first gear (10) and the mechanical gear locking structure according to claim 4; the reverse gear (11) is arranged on one side, facing the rear auxiliary shifting fork shaft (2), of the shifting fork structural part (5), and the first gear (10) is arranged on one side, facing away from the rear auxiliary shifting fork shaft (2), of the shifting fork structural part (5);
when the rear auxiliary shifting fork shaft (2) is in low gear, the shifting fork structural part (5) can be used for engaging a reverse gear to the reverse gear (11) and engaging a first gear to the first gear (10);
when the rear auxiliary shifting fork shaft (2) is in a high gear state, the shifting fork structural member (5) can be used for shifting a reverse gear to the reverse gear (11); when the shifting fork structural part (5) is shifted to a first gear, the convex gear table (54) of the shifting fork structural part (5) is propped against the end part of the rear auxiliary shifting fork shaft (2).
9. The transmission of claim 8, wherein: the mechanical gear locking structure further comprises a rear auxiliary box cylinder (1) and a rear auxiliary shifting fork (3), the rear auxiliary shifting fork shaft (2) is fixedly arranged at the top end of the rear auxiliary shifting fork (3) in a penetrating mode, the rear auxiliary shifting fork (3) is arc-shaped with a downward opening, and the bottom end of the rear auxiliary shifting fork is used for being hinged with a connecting piece in the gearbox;
when one side of the rear auxiliary box cylinder (1) departing from the rear auxiliary declutch shift shaft (2) is ventilated, the rear auxiliary declutch shift shaft (2) is in a high-grade state, and the end part of the rear auxiliary declutch shift shaft (2) is abutted against a convex gear table (54) of a shifting fork structural part (5) in a neutral position;
two ends of an arc-shaped main rod (50) of a shifting fork structural member of the mechanical gear locking structure are also vertically downwards and respectively outwards extended to form pulling pins (52), and the pulling pins (52) are used for being hung on gears of different gears;
when the shifting fork structure part (5) is in a first gear, the pulling pin (52) is attached to the first gear (10), and when the shifting fork structure part (5) is in a reverse gear, the pulling pin (52) is attached to the reverse gear (11).
10. The transmission of claim 9, wherein: the mechanical gear locking structure further comprises a gear shifting pull plate (6) and a gear shifting finger (7), the gear shifting pull plate (6) is provided with a gear missing opening (61), and the gear shifting finger (7) is provided with two clamping jaws; when the gear shifting finger (7) rotates clockwise or anticlockwise, one claw of the gear shifting finger (7) shifts the gear shifting pull plate (6) through the gear missing opening (61);
the shifting fork structural part (5) further comprises a vertical rod (53), and the vertical rod (53) is vertically and fixedly arranged on a hinged rod (51); the convex baffle platform (54) is fixed on the vertical rod (53); the end part of the vertical rod (53) is hinged to one end of the gear shifting pulling plate (6);
the gearbox further comprises a front auxiliary shifting fork (8) and a front auxiliary shifting fork shaft (9), the front auxiliary shifting fork (8) is arranged relative to the rear auxiliary shifting fork (3), the front auxiliary shifting fork shaft (9) is arranged relative to the rear auxiliary shifting fork shaft (2), the front auxiliary shifting fork shaft (9) is fixedly arranged at the top end of the front auxiliary shifting fork (8) in a penetrating mode, the front auxiliary shifting fork (8) is in an arc shape with a downward opening, and the top end of the front auxiliary shifting fork (8) is provided with a groove support table (13) with an upward opening; the other end of the gear shifting pulling plate (6) is erected on the groove supporting table (13);
when the rear auxiliary shifting fork shaft (2) is in low gear engagement, the gear shifting finger (7) can engage a first gear or a reverse gear through the gear shifting pull plate (6) and the shifting fork structural member (5);
when the rear auxiliary shifting fork shaft (2) is in a high gear state, the shifting finger (7) can be in a reverse gear state through the shifting pull plate (6) and the shifting fork structural member (5);
when the gear shifting finger (7) is used for engaging a first gear through the gear shifting pulling plate (6) and the shifting fork structural member (5), the end part of the rear auxiliary shifting fork shaft (2) is propped against a convex gear table (54) of the shifting fork structural member (5), so that the shifting fork structural member (5) is in a neutral gear position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110604996.7A CN113217625B (en) | 2021-05-31 | 2021-05-31 | Shifting fork structural part, mechanical gear locking structure and gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110604996.7A CN113217625B (en) | 2021-05-31 | 2021-05-31 | Shifting fork structural part, mechanical gear locking structure and gearbox |
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| Publication Number | Publication Date |
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| CN113217625A CN113217625A (en) | 2021-08-06 |
| CN113217625B true CN113217625B (en) | 2022-08-12 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19951683A1 (en) * | 1999-10-27 | 2001-05-03 | Zahnradfabrik Friedrichshafen | Single-rod switching device for motor vehicle manual transmissions |
| JP5962205B2 (en) * | 2012-05-23 | 2016-08-03 | いすゞ自動車株式会社 | Vehicle transmission |
| CN109654222B (en) * | 2018-12-29 | 2024-02-13 | 綦江齿轮传动有限公司 | Transmission shift mechanism |
| CN210686944U (en) * | 2019-09-24 | 2020-06-05 | 江西大乘汽车工业有限公司 | Stable reverse gear lock structure |
| CN111365456B (en) * | 2020-03-20 | 2021-04-09 | 西安法士特汽车传动有限公司 | Air circuit control mechanism of main and auxiliary box structure speed changer with power take-off function |
| CN214093006U (en) * | 2020-12-30 | 2021-08-31 | 綦江齿轮传动有限公司 | Gear selecting and shifting mechanism of twelve-gear heavy type automatic transmission |
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