CN110966402B - Novel gearbox gearshift - Google Patents

Novel gearbox gearshift Download PDF

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Publication number
CN110966402B
CN110966402B CN201911378744.6A CN201911378744A CN110966402B CN 110966402 B CN110966402 B CN 110966402B CN 201911378744 A CN201911378744 A CN 201911378744A CN 110966402 B CN110966402 B CN 110966402B
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China
Prior art keywords
gear
gear shifting
box
cavity
neutral
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CN201911378744.6A
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Chinese (zh)
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CN110966402A (en
Inventor
黄进
周友国
杜长林
罗运江
马强
陈小苏
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Chongqing Tiema Gearbox Co ltd
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Chongqing Tiema Industries Group Co ltd
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/16—Inhibiting or initiating shift during unfavourable conditions, e.g. preventing forward reverse shift at high vehicle speed, preventing engine over speed
    • 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
    • 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
    • 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
    • F16H2063/3076—Selector shaft assembly, e.g. supporting, assembly or manufacturing of selector or shift shafts; Special details thereof
    • 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
    • F16H2063/321—Gear shift yokes, e.g. shift forks characterised by the interface between fork body and shift rod, e.g. fixing means, bushes, cams or pins

Abstract

The invention discloses a novel gearbox gear shifting mechanism which comprises a gear shifting shaft, a gear shifting box, a neutral gear positioning device, a driving cam, a locking block, a baffle mechanism, a driving block, a limiting mechanism, a reverse gear switch, a neutral gear switch, a high-low gear valve and a reverse gear contact pin, wherein the gear shifting shaft is arranged on the gear shifting box; a partition plate is arranged inside the gear shifting box; the partition plate divides the inner space of the gear shifting box to form a cavity I and a cavity II; one end of the gear shifting shaft is connected with the whole vehicle gear shifting control mechanism, and the other end of the gear shifting shaft penetrates through the cavity I of the gear shifting box, penetrates through the partition plate and extends into the cavity II; the gear shifting redundancy is high, the guide groove is formed in the lock block, when the gear shifting operation is executed, the corresponding shifting fork block enters the guide groove, other gear shifting fork blocks are prevented, the gear disorder phenomenon caused by the position difference of the shifting fork blocks is avoided through the structural design, the gears are more definite, and the accurate gear selecting and gear shifting functions can be realized under the condition that the position difference of the gear shifting fork shaft is caused by the size difference of the cylindrical gearbox.

Description

Novel gearbox gearshift
Technical Field
The invention belongs to the technical field of gearboxes, and particularly relates to a novel gearbox gear shifting mechanism.
Background
The gearbox gear shifting mechanism requires clear gears and has a gear indicating function. The cylinder type gearbox shifting fork is convenient to arrange, and the shifting fork can be relatively concentrated, so that the design of a shifting mechanism is facilitated. The shifting fork block generally adopts the draw-in groove design, and the drive cam on the gearshift acts on the shifting fork block promptly to drive the axial motion of shifting fork axle, realize the function of shifting gears. But because the parts that relate to are more, the shift fork piece position is difficult to guarantee unanimously.
Accordingly, there is a need in the art for a transmission shift mechanism that addresses the above-mentioned problems.
Disclosure of Invention
The technical scheme adopted for achieving the purpose of the invention is that the novel gearbox gear shifting mechanism comprises a gear shifting shaft, a gear shifting box, a neutral gear positioning device, a driving cam, a locking block, a baffle mechanism, a driving block, a limiting mechanism, a reverse gear switch, a neutral gear switch, a high-low gear valve and a reverse gear contact pin.
The inside baffle that has of box of shifting. The partition plate separates the inner space of the gear shifting box to form a cavity I and a cavity II.
One end of the gear shifting shaft is connected with the whole vehicle gear shifting control mechanism, and the other end of the gear shifting shaft penetrates through the cavity I of the gear shifting box, penetrates through the partition plate and extends into the cavity II. The gear shifting shaft is movably connected with the gear shifting box. The gear shifting shaft extends into the outer wall of the tail end of the cavity II and is provided with a flange. The gear shifting shaft extends into a receiving groove which is provided with a reverse gear contact pin on the outer wall of the rod part of the cavity I.
When the whole vehicle gear shifting control mechanism selects gears, the gear shifting shaft moves axially. When the whole vehicle gear shifting control mechanism shifts gears, the gear shifting shaft rotates.
And a spring positioning mechanism is arranged in the neutral position positioning device. The neutral gear positioning device is arranged on the gear shifting box, and the spring positioning mechanism of the neutral gear positioning device extends into a cavity I of the gear shifting box.
And an elastic positioning pin I and an elastic positioning pin II are arranged in the high-low gas valve. And the high-low air valve is arranged on the gear shifting box. Elastic locating pin I and elastic locating pin II all stretch into in the cavity I of box of shifting, and wherein elastic locating pin II is for elastic locating pin I, is closer to the baffle.
The driving cam is fixedly connected to the gear shifting shaft and is positioned in the cavity I. And a clamping groove I which is matched with a spring positioning mechanism of the neutral gear positioning device is arranged on the outer wall of the driving cam. The length direction of the clamping groove I is parallel to the axial direction of the gear shifting shaft. And the outer wall of the driving cam is provided with a groove matched with an elastic positioning pin I and an elastic positioning pin II of the high-low air blocking valve.
The locking block is fixedly connected to the outer wall of the driving cam. The locking block is provided with a guide groove matched with the shifting fork block.
The baffle mechanism comprises a baffle I and a baffle II. And the baffle II is fixedly connected to the gear shifting shaft. The baffle I is connected to the gear shifting shaft in a sliding mode, and the baffle I is connected with the baffle II through an elastic component. Baffle I and baffle II all are located the cavity II of box of shifting, and wherein baffle I is for baffle II, is close to the baffle more.
And a neutral switch contact pin is connected to the neutral switch. The neutral switch is mounted on the gear shifting box, and a contact pin of the neutral switch extends into a cavity II of the gear shifting box.
The driving block is positioned in a cavity II of the gear shifting box. The driving block is connected to the gear shifting shaft through a clamping groove. And the driving block is provided with a clamping groove II matched with a neutral switch contact pin.
The limiting mechanism comprises a positioning pin, a spring I and a limiting block.
One end of the limiting block is hinged to the inner wall of the gear shifting box, and the other end of the limiting block is a clamping portion. The positioning pin is inserted into the clamping part of the limiting block. One end of the spring I is connected to the inner wall of the gear shifting box, and the other end of the spring I is connected with the positioning pin, so that the clamping part of the limiting block can be clamped on the flange of the gear shifting shaft.
The reverse gear switch is installed on the gear shifting box. The reverse gear switch and the gear shifting shaft extend into the tail end of the cavity II to be opposite.
One end of the reverse gear contact pin is installed on the gear shifting box, and the other end of the reverse gear contact pin extends into the cavity I and corresponds to the reverse gear contact pin accommodating groove of the gear shifting shaft.
Further, the high-low air blocking valve is provided with an air outlet I, an air outlet II and an air inlet. And the air outlet II corresponds to the elastic positioning pin I and is communicated with the blocking cavity of the auxiliary box air cylinder. And the air outlet I corresponds to the elastic positioning pin II and is communicated with a high gear cavity of the auxiliary box air cylinder.
Further, when the transmission is in a neutral position between 3 and 4 speeds, the engagement portion of the stopper is engaged with the flange of the shift shaft. And the elastic positioning pin I of the high-low air valve is compressed by the driving cam, the elastic positioning pin II of the high-low air valve is clamped into the groove of the driving cam, the air outlet II is ventilated, and the auxiliary box is in a low-gear position.
When the gearbox is in a neutral gear position between 5 gears and 6 gears, the flange on the gear shifting shaft passes over the clamping part of the limiting block, the spring I is compressed, the baffle plate mechanism is in contact with the partition plate of the gear shifting box, the elastic positioning pin II of the high-low air blocking valve is compressed, the air outlet I is ventilated, and the auxiliary box is in a high gear position.
When the gear box is in a neutral gear position between 7 and 8 gears, the baffle mechanism is compressed, and the driving cam is in contact with the inner wall of the gear box.
When the gear box is in a neutral gear position between 1 gear and 2 gears, the reverse gear contact pin is clamped in the reverse gear contact pin accommodating groove of the gear shifting shaft.
When the gearbox is in a neutral gear position of a reverse gear, the driving cam is in contact with the partition plate of the gear shifting box, and the tail end of the gear shifting shaft is in contact with the reverse gear switch.
Furthermore, the anti-disengaging lock pin also comprises a positioning plate and an anti-disengaging lock pin.
The anti-gear-shifting lock pin is arranged on the gear shifting box, and the lock pin part of the anti-gear-shifting lock pin extends into a cavity II of the gear shifting box.
The locating plate is located in a cavity II of the gear shifting box. The locating plate is connected to the gear shifting shaft through the clamping groove. And a clamping groove III which is matched with the lock pin part of the anti-disengaging lock pin is arranged on the positioning plate.
Furthermore, a connecting part is arranged on the outer wall of the driving cam in a branching manner. The locking block is fixedly connected to the connecting part of the outer wall of the driving cam.
Further, the clamping groove I is a V-shaped groove.
Further, the elastic component is a spring II.
The invention has the advantages that the technical effect is undoubtedly high in gear-shifting redundancy, the lock block is provided with the guide groove, when gear-shifting operation is executed, the corresponding shifting fork block enters the guide groove, other gear shifting fork blocks are prevented, the structural design avoids the gear disorder phenomenon caused by the position difference of the shifting fork blocks, the gears are more definite, and the accurate gear selection and gear shifting functions can be realized under the condition of the position difference of the gear-shifting fork shaft caused by the size difference of the cylindrical gearbox.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the alignment plate and the locking pin in an assembled relationship of FIG. 1;
FIG. 3 is a schematic view of the alignment plate in assembled relation with the locking pins shown in FIG. 2;
FIG. 4 is a schematic view of the drive block in relation to the neutral switch;
FIG. 5 is a schematic view of the driving cam;
fig. 6 is a schematic view of the assembly relationship of the driving cam, the locking piece and the shift shaft.
In the figure: the gear shifting box comprises a centering ring 1, a gear shifting shaft 2, a flange 201, a reverse gear contact pin accommodating groove 202, a gear shifting box 3, a clapboard 301, a neutral gear positioning device 4, a driving cam 5, a clamping groove I501, a groove 502, a connecting part 503, a pin 6, a locking block 7, a guide groove 701, a baffle mechanism 9, a positioning plate 10, a clamping groove III1001, a driving block 11, a clamping groove II1101, a positioning pin 12, a spring I13, a limiting block 14, a reverse gear switch 15, a neutral gear switch contact pin 16, a neutral gear switch 17, an anti-gear-disengaging locking pin 18, a spring II19, a high-low air valve 20, an elastic positioning pin I2001, an elastic positioning pin II2002, an air outlet I2003, an air outlet II2004, an air inlet.
Detailed Description
The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.
Example 1:
the embodiment discloses a novel gearbox gearshift, see fig. 1, and includes a gear shift shaft 2, a gear shift box 3, a neutral gear positioning device 4, a drive cam 5, a locking block 7, a baffle mechanism 9, a positioning plate 10, a drive block 11, a limiting mechanism, a reverse gear switch 15, a neutral gear switch 17, an anti-disengagement locking pin 18, a high-low air valve 20 and a reverse gear contact pin 21.
The shift box 3 has a partition 301 inside. The partition 301 divides the inner space of the shift box 3 to form a cavity I and a cavity II.
One end of the gear shifting shaft 2 is connected with the whole vehicle gear shifting control mechanism, and the other end of the gear shifting shaft penetrates into the cavity I of the gear shifting box 3, penetrates through the partition plate 301 and extends into the cavity II. The gear shifting shaft 2 is movably connected with the gear shifting box 3. In this embodiment, a centering ring 1 is installed between the shift shaft 2 and the shift box 3, and a needle bearing 8 is installed between the shift shaft 2 and the partition plate 301. So that the shift shaft 2 can make axial and rotational movements. The gear shift shaft 2 projects into the outer wall of the end of the cavity II and has a flange 201. The gear shift shaft 2 projects into a receiving groove 202 with a reverse gear contact pin on the outer wall of the lever part of the cavity I.
The force of a driver acting on the handle is transmitted to the gear shifting shaft 2 through the whole vehicle gear shifting control mechanism, and when the whole vehicle gear shifting control mechanism selects gears, the gear shifting shaft 2 moves axially. When the whole vehicle gear shifting control mechanism shifts gears, the gear shifting shaft 2 rotates.
And a spring positioning mechanism is arranged in the neutral position positioning device 4. Neutral positioning device 4 is mounted on shift box 3, and its spring positioning mechanism extends into cavity I of shift box 3.
The high-low air valve 20 is internally provided with an elastic positioning pin I2001 and an elastic positioning pin II 2002. The high-low air valve 20 is mounted on the gear box 3. The elastic positioning pin I2001 and the elastic positioning pin II2002 both project into the cavity I in the shift housing 3, wherein the elastic positioning pin II2002 is located closer to the partition 301 than the elastic positioning pin I2001. The high-low air blocking valve 20 is provided with an air outlet I2003, an air outlet II2004 and an air inlet 2005. The air outlet II2004 corresponds to the elastic positioning pin I2001, and the air outlet II2004 is communicated with a resisting cavity of the auxiliary box air cylinder. The air outlet I2003 corresponds to the elastic positioning pin II2002, and the air outlet I2003 is communicated with a high-gear cavity of the auxiliary box air cylinder.
Referring to fig. 5 and 6, the drive cam 5 is attached to the shift shaft 2 by a pin 6 and is located in the cavity I. The outer wall of the driving cam 5 is provided with a clamping groove I501 matched with the spring positioning mechanism of the neutral gear positioning device 4, in the embodiment, the clamping groove I501 is a V-shaped groove, and when the gearbox is in neutral gear, the spring positioning mechanism of the neutral gear positioning device 4 acts on the clamping groove I501 of the driving cam 5 to realize neutral gear positioning. The length direction of the clamping groove I501 is parallel to the axial direction of the gear shifting shaft 2. And a groove 502 matched with the elastic positioning pin I2001 and the elastic positioning pin II2002 of the high-low air valve 20 is arranged on the outer wall of the driving cam 5. A connecting part 503 is extended from the outer wall of the driving cam 5. The connecting portion 503 is a bump I, and the top surface of the bump I has a through groove penetrating through two side walls of the bump I.
One side of the locking piece 7 is provided with a connecting groove adapted to the connecting part 503, and the locking piece 7 is fixedly connected with the connecting part 503 of the outer wall of the driving cam 5 through the connecting groove. And a convex block II is arranged on the other side of the locking block 7, and the top surface of the convex block II is provided with a guide groove 701 matched with the shifting fork block.
The baffle mechanism 9 comprises a baffle I and a baffle II. The baffle II is fixedly connected to the gear shifting shaft 2. The baffle I is connected to the gear shifting shaft 2 in a sliding mode, and the baffle I and the baffle II are connected through a spring II 19. Baffle I and baffle II all are located the cavity II of box 3 of shifting, and wherein baffle I is for baffle II, is close to baffle 301 more.
Referring to fig. 4, a neutral switch contact pin 16 is connected to the neutral switch 17. The neutral switch 17 is fixed to the shift housing 3, and its neutral switch contact pin 16 projects into the cavity II of the shift housing 3.
The drive block 11 is located in the cavity II of the shift box 3. The driving block 11 is connected to the gear shifting shaft 2 through a clamping groove. The driving block 11 is provided with a card slot II1101 matched with the neutral switch contact pin 16.
Referring to fig. 2 and 3, the anti-lock catch 18 is fastened to the shift housing 3, the locking portion of which protrudes into the cavity II of the shift housing 3.
The positioning plate 10 is located in the cavity II of the shift box 3. The positioning plate 10 is connected to the gear shifting shaft 2 through a clamping groove. The positioning plate 10 is provided with a clamping groove III1001 corresponding to the lock pin part of the anti-disengagement lock pin 18.
The limiting mechanism comprises a positioning pin 12, a spring I13 and a limiting block 14.
One end of the limiting block 14 is hinged to the inner wall of the gear shifting box 3, and the other end of the limiting block is a clamping portion. The positioning pin 12 is inserted into an engagement portion of the stopper 14. The spring I13 has one end connected to the inner wall of the shift box 3 and the other end acting on the engaging portion of the stopper 14 through the connecting positioning pin 12, so that the engaging portion of the stopper 14 can be engaged with the flange 201 of the shift shaft 2.
The reverse switch 15 is fixed to the shift housing 3. The reverse switch 15 is opposite to the end of the gear shift shaft 2 that protrudes into the cavity II.
The reverse contact pin 21 is fixed at one end to the shift housing 3 and at the other end extends into the cavity I, corresponding to the reverse contact pin receiving groove 202 of the shift shaft 2.
When the transmission is in a neutral position between 3 and 4 speeds, as shown in fig. 1, the engagement portion of the stopper 14 is engaged with the flange 201 of the shift shaft 2. The elastic locating pin I2001 of the high-low air valve 20 is compressed by the driving cam 5, the elastic locating pin II2002 of the high-low air valve 20 is clamped in the groove 502 of the driving cam 5, the air outlet II2004 is ventilated, and the auxiliary box is in a low-gear position.
When the transmission case is in a neutral position between 5 and 6 gears, the shift shaft 2 moves leftward as viewed in fig. 1, the flange 201 of the shift shaft 2 passes over the engaging portion of the stopper 14, the spring I13 is compressed, the damper mechanism 9 contacts the partition plate 301 of the shift box 3, the elastic positioning pin II2002 of the high-low air damper 20 is compressed, the air outlet I2003 is vented, and the sub-case is in a high-gear position. In the process of switching the gearbox from 3 and 4 gears to 5 and 6 gears, the high-low gear switching of the auxiliary box is realized, and a driver can obviously feel gear switching information due to the fact that the limiting block 14 compresses the spring I13 in the process.
When the gear box is in a neutral position between 7 and 8 gears, the gear shifting shaft 2 continues to move leftwards, the spring II19 on the baffle mechanism 9 is compressed, and the driving cam 5 is in contact with the inner wall of the gear shifting box 3.
When the transmission is in the neutral position between 1 and 2 gears, the shift shaft 2 is moved rightward in fig. 1, and the reverse contact pin 21 is engaged in the reverse contact pin receiving groove 202 of the shift shaft 2.
When the gearbox is in a neutral gear position of a reverse gear, the gear shifting shaft 2 continues to move towards the right, the driving cam 5 is contacted with the partition plate 301 of the gear shifting box 3, and the tail end of the gear shifting shaft 2 is contacted with the reverse gear switch 15.
When the gear shift shaft 2 is rotated, the drive cam 5 rotates together therewith, and the transmission gear shifting is realized. The locking block 7 is provided with a guide groove 701, when the gear shifting operation is executed, the corresponding shifting fork block enters the guide groove 701, and other gear shifting fork blocks are prevented. The structure design avoids the disordered gear phenomenon caused by the position difference of the shifting fork block, and the gears are more definite.
The positioning plate 10 and the driving block 11 are connected with the gear shifting shaft 2 through clamping grooves, and rotate together with the gear shifting shaft 2 in the gear shifting process. During the gear-reversing process, the positioning plate 10 is in contact with the gear-reversing prevention lock pin 18 to prevent the gear-shifting box from gear-reversing. The drive block 11 is rotated to activate the neutral switch 17 and thereby provide a neutral signal to the gearbox, and the gear shift shaft 2 is moved axially to activate the reverse switch 15 and thereby provide a reverse signal to the gearbox.
Example 2:
the embodiment discloses a basic implementation manner, and a novel gearbox gear shifting mechanism, which is shown in fig. 1 and comprises a gear shifting shaft 2, a gear shifting box 3, a neutral gear positioning device 4, a driving cam 5, a locking block 7, a baffle mechanism 9, a driving block 11, a limiting mechanism, a reverse gear switch 15, a neutral gear switch 17, a high-low gear valve 20 and a reverse gear contact pin 21.
The shift box 3 has a partition 301 inside. The partition 301 divides the inner space of the shift box 3 to form a cavity I and a cavity II.
One end of the gear shifting shaft 2 is connected with the whole vehicle gear shifting control mechanism, and the other end of the gear shifting shaft penetrates into the cavity I of the gear shifting box 3, penetrates through the partition plate 301 and extends into the cavity II. The gear shifting shaft 2 is movably connected with the gear shifting box 3. So that the shift shaft 2 can make axial and rotational movements. The gear shift shaft 2 projects into the outer wall of the end of the cavity II and has a flange 201. The gear shift shaft 2 projects into a receiving groove 202 with a reverse gear contact pin on the outer wall of the lever part of the cavity I.
The force of a driver acting on the handle is transmitted to the gear shifting shaft 2 through the whole vehicle gear shifting control mechanism, and when the whole vehicle gear shifting control mechanism selects gears, the gear shifting shaft 2 moves axially. When the whole vehicle gear shifting control mechanism shifts gears, the gear shifting shaft 2 rotates.
And a spring positioning mechanism is arranged in the neutral position positioning device 4. Neutral positioning device 4 is mounted on shift box 3, and its spring positioning mechanism extends into cavity I of shift box 3.
The high-low air valve 20 is internally provided with an elastic positioning pin I2001 and an elastic positioning pin II 2002. The high-low air valve 20 is mounted on the gear box 3. The elastic positioning pin I2001 and the elastic positioning pin II2002 both project into the cavity I in the shift housing 3, wherein the elastic positioning pin II2002 is located closer to the partition 301 than the elastic positioning pin I2001.
Referring to fig. 5 and 6, the drive cam 5 is attached to the shift shaft 2 by a pin 6 and is located in the cavity I. And a clamping groove I501 matched with the spring positioning mechanism of the neutral gear positioning device 4 is arranged on the outer wall of the driving cam 5, and when the gearbox is in neutral gear, the spring positioning mechanism of the neutral gear positioning device 4 acts on the clamping groove I501 of the driving cam 5 to realize neutral gear positioning. The length direction of the clamping groove I501 is parallel to the axial direction of the gear shifting shaft 2. And a groove 502 matched with the elastic positioning pin I2001 and the elastic positioning pin II2002 of the high-low air valve 20 is arranged on the outer wall of the driving cam 5.
The locking block 7 is fixedly connected to the outer wall of the driving cam 5. The locking block 7 is provided with a guide groove 701 matched with the shifting fork block.
The baffle mechanism 9 comprises a baffle I and a baffle II. The baffle II is fixedly connected to the gear shifting shaft 2. The baffle I is connected to the gear shifting shaft 2 in a sliding mode, and the baffle I and the baffle II are connected through an elastic component. Baffle I and baffle II all are located the cavity II of box 3 of shifting, and wherein baffle I is for baffle II, is close to baffle 301 more.
Referring to fig. 4, a neutral switch contact pin 16 is connected to the neutral switch 17. The neutral switch 17 is fixed to the shift housing 3, and its neutral switch contact pin 16 projects into the cavity II of the shift housing 3.
The drive block 11 is located in the cavity II of the shift box 3. The driving block 11 is connected to the gear shifting shaft 2 through a clamping groove. The driving block 11 is provided with a card slot II1101 matched with the neutral switch contact pin 16.
The limiting mechanism comprises a positioning pin 12, a spring I13 and a limiting block 14.
One end of the limiting block 14 is hinged to the inner wall of the gear shifting box 3, and the other end of the limiting block is a clamping portion. The positioning pin 12 is inserted into an engagement portion of the stopper 14. The spring I13 has one end connected to the inner wall of the shift box 3 and the other end acting on the engaging portion of the stopper 14 through the connecting positioning pin 12, so that the engaging portion of the stopper 14 can be engaged with the flange 201 of the shift shaft 2.
The reverse switch 15 is fixed to the shift housing 3. The reverse switch 15 is opposite to the end of the gear shift shaft 2 that protrudes into the cavity II.
The reverse contact pin 21 is fixed at one end to the shift housing 3 and at the other end extends into the cavity I, corresponding to the reverse contact pin receiving groove 202 of the shift shaft 2.
When the gear shift shaft 2 is rotated, the drive cam 5 rotates together therewith, and the transmission gear shifting is realized. The locking block 7 is provided with a guide groove 701, when the gear shifting operation is executed, the corresponding shifting fork block enters the guide groove 701, and other gear shifting fork blocks are prevented. The structure design avoids the disordered gear phenomenon caused by the position difference of the shifting fork block, and the gears are more definite.
Because the driving block 11 is connected with the gear shifting shaft 2 through the clamping groove, the gear shifting shaft 2 rotates along with the driving block in the gear shifting process. The drive block 11 is rotated to activate the neutral switch 17 to provide a neutral signal to the gearbox.
Example 3:
the main structure of this embodiment is the same as that of embodiment 2, and further, the high-low air valve 20 is provided with an air outlet I2003, an air outlet II2004 and an air inlet 2005. The air outlet II2004 corresponds to the elastic positioning pin I2001, and the air outlet II2004 is communicated with a resisting cavity of the auxiliary box air cylinder. The air outlet I2003 corresponds to the elastic positioning pin II2002, and the air outlet I2003 is communicated with a high-gear cavity of the auxiliary box air cylinder.
Example 4:
in this embodiment, the main structure is the same as that of embodiment 3, and when the transmission is in a neutral position between 3 and 4 speeds, as shown in fig. 1, the engagement portion of the stopper 14 is engaged with the flange 201 of the shift shaft 2. The elastic locating pin I2001 of the high-low air valve 20 is compressed by the driving cam 5, the elastic locating pin II2002 of the high-low air valve 20 is clamped in the groove 502 of the driving cam 5, the air outlet II2004 is ventilated, and the auxiliary box is in a low-gear position.
When the transmission case is in a neutral position between 5 and 6 gears, the shift shaft 2 moves leftward as viewed in fig. 1, the flange 201 of the shift shaft 2 passes over the engaging portion of the stopper 14, the spring I13 is compressed, the damper mechanism 9 contacts the partition plate 301 of the shift box 3, the elastic positioning pin II2002 of the high-low air damper 20 is compressed, the air outlet I2003 is vented, and the sub-case is in a high-gear position. In the process of switching the gearbox from 3 and 4 gears to 5 and 6 gears, the high-low gear switching of the auxiliary box is realized, and a driver can obviously feel gear switching information due to the fact that the limiting block 14 compresses the spring I13 in the process.
When the gear box is in a neutral position between 7 and 8 gears, the gear shifting shaft 2 continues to move leftwards, the spring II19 on the baffle mechanism 9 is compressed, and the driving cam 5 is in contact with the inner wall of the gear shifting box 3.
When the transmission is in the neutral position between 1 and 2 gears, the shift shaft 2 is moved rightward in fig. 1, and the reverse contact pin 21 is engaged in the reverse contact pin receiving groove 202 of the shift shaft 2.
When the gearbox is in a neutral gear position of a reverse gear, the gear shifting shaft 2 continues to move rightwards, the driving cam 5 is in contact with the partition plate 301 of the gear shifting box 3, the tail end of the gear shifting shaft 2 is in contact with the reverse gear switch 15, the reverse gear switch 15 is triggered, and therefore a reverse gear signal is provided for the gearbox.
Example 5:
the main structure of this embodiment is the same as embodiment 2, and further, referring to fig. 2 and 3, the anti-shift lock pin 18 is fixed to the shift housing 3, and the lock pin portion thereof extends into the cavity II of the shift housing 3.
The positioning plate 10 is located in the cavity II of the shift box 3. The positioning plate 10 is connected to the gear shifting shaft 2 through a clamping groove. The positioning plate 10 is provided with a clamping groove III1001 corresponding to the lock pin part of the anti-disengagement lock pin 18.
The positioning plate 1 is connected with the gear shifting shaft 2 through a clamping groove, and the gear shifting shaft 2 rotates together with the positioning plate in the gear shifting process. During the gear-reversing process, the positioning plate 10 is in contact with the gear-reversing prevention lock pin 18 to prevent the gear-shifting box from gear-reversing.
Example 6:
the main structure of this embodiment is the same as that of embodiment 2, and further, a connecting portion 503 is extended from the outer wall of the driving cam 5. The connecting portion 503 is a bump I, and the top surface of the bump I has a through groove penetrating through two side walls of the bump I.
One side of the locking piece 7 is provided with a connecting groove adapted to the connecting part 503, and the locking piece 7 is fixedly connected with the connecting part 503 of the outer wall of the driving cam 5 through the connecting groove. And a convex block II is arranged on the other side of the locking block 7, and the top surface of the convex block II is provided with a guide groove 701 matched with the shifting fork block.
Example 7:
the main structure of this embodiment is the same as that of embodiment 2, and further, the card slot I501 is a V-shaped slot.
Example 8:
the main structure of this embodiment is the same as that of embodiment 2, and further, the elastic member is a spring II 19.

Claims (7)

1. The utility model provides a novel gearbox gearshift which characterized in that: the automatic gearshift device comprises a gearshift shaft (2), a gearshift box (3), a neutral gear positioning device (4), a driving cam (5), a locking block (7), a baffle mechanism (9), a driving block (11), a limiting mechanism, a reverse gear switch (15), a neutral gear switch (17), a high-low gear valve (20) and a reverse gear contact pin (21);
the inside of the gear shifting box (3) is provided with a clapboard (301); the partition plate (301) divides the inner space of the gear shifting box (3) to form a cavity I and a cavity II;
one end of the gear shifting shaft (2) is connected with the whole vehicle gear shifting control mechanism, and the other end of the gear shifting shaft penetrates through the cavity I of the gear shifting box (3), penetrates through the partition plate (301) and extends into the cavity II; the gear shifting shaft (2) is movably connected with the gear shifting box (3); the gear shifting shaft (2) extends into the outer wall of the tail end of the cavity II and is provided with a flange (201); the gear shifting shaft (2) extends into a receiving groove (202) which is provided with a reverse gear contact pin on the outer wall of the rod part of the cavity I;
when the whole vehicle gear shifting control mechanism selects gears, the gear shifting shaft (2) moves axially; when the whole vehicle gear-shifting control mechanism shifts gears, the gear-shifting shaft (2) rotates;
a spring positioning mechanism is arranged in the neutral position positioning device (4); the neutral gear positioning device (4) is arranged on the gear shifting box (3), and a spring positioning mechanism of the neutral gear positioning device extends into a cavity I of the gear shifting box (3);
an elastic positioning pin I (2001) and an elastic positioning pin II (2002) are arranged in the high-low air stop valve (20); the high-low air valve (20) is arranged on the gear shifting box (3); the elastic positioning pin I (2001) and the elastic positioning pin II (2002) both extend into the cavity I of the gear shifting box (3), wherein the elastic positioning pin II (2002) is closer to the partition plate (301) than the elastic positioning pin I (2001);
the driving cam (5) is fixedly connected to the gear shifting shaft (2) and is positioned in the cavity I; a clamping groove I (501) which is matched with a spring positioning mechanism of the neutral gear positioning device (4) is arranged on the outer wall of the driving cam (5); the length direction of the clamping groove I (501) is parallel to the axial direction of the gear shifting shaft (2); the outer wall of the driving cam (5) is provided with a groove (502) which is matched with an elastic positioning pin I (2001) and an elastic positioning pin II (2002) of the high-low air blocking valve (20);
the locking block (7) is fixedly connected to the outer wall of the driving cam (5); a guide groove (701) matched with the shifting fork block is formed in the locking block (7);
the baffle mechanism (9) comprises a baffle I and a baffle II; the baffle II is fixedly connected to the gear shifting shaft (2); the baffle I is connected to the gear shifting shaft (2) in a sliding mode, and the baffle I and the baffle II are connected through an elastic component; the baffle I and the baffle II are both positioned in a cavity II of the gear shifting box (3), wherein the baffle I is closer to the partition plate (301) relative to the baffle II;
a neutral switch contact pin (16) is connected to the neutral switch (17); the neutral switch (17) is arranged on the gear shifting box (3), and a neutral switch contact pin (16) of the neutral switch extends into a cavity II of the gear shifting box (3);
the driving block (11) is positioned in a cavity II of the gear shifting box (3); the driving block (11) is connected to the gear shifting shaft (2) through a clamping groove; a clamping groove II (1101) matched with a neutral switch contact pin (16) is arranged on the driving block (11);
the limiting mechanism comprises a positioning pin (12), a spring I (13) and a limiting block (14);
one end of the limiting block (14) is hinged to the inner wall of the gear shifting box (3), and the other end of the limiting block is a clamping part; the positioning pin (12) is inserted into the clamping part of the limiting block (14); one end of the spring I (13) is connected to the inner wall of the gear shifting box (3), and the other end of the spring I enables the clamping part of the limiting block (14) to be clamped on the flange (201) of the gear shifting shaft (2) through the connecting positioning pin (12);
the reverse gear switch (15) is arranged on the gear shifting box (3); the reverse gear switch (15) is opposite to the tail end of the cavity II, into which the gear shifting shaft (2) extends;
one end of the reverse gear contact pin (21) is installed on the gear shifting box (3), and the other end of the reverse gear contact pin extends into the cavity I and corresponds to the reverse gear contact pin accommodating groove (202) of the gear shifting shaft (2).
2. The novel transmission shifting mechanism of claim 1, wherein: the high-low air blocking valve (20) is provided with an air outlet I (2003), an air outlet II (2004) and an air inlet (2005); the air outlet II (2004) corresponds to the elastic positioning pin I (2001), and the air outlet II (2004) is communicated with a resisting cavity of the auxiliary box air cylinder; the air outlet I (2003) corresponds to the elastic positioning pin II (2002), and the air outlet I (2003) is communicated with a high-gear cavity of the auxiliary box air cylinder.
3. The novel transmission shifting mechanism of claim 2, wherein: when the gearbox is in a neutral gear position between 3 and 4 gears, the clamping part of the limiting block (14) is clamped on a flange (201) of the gear shifting shaft (2); the elastic positioning pin I (2001) of the high-low air valve (20) is compressed by the driving cam (5), the elastic positioning pin II (2002) of the high-low air valve (20) is clamped in the groove (502) of the driving cam (5), the air outlet II (2004) is ventilated, and the auxiliary box is in a low-gear position;
when the gearbox is in a neutral gear position between 5 and 6 gears, a flange (201) on the gear shifting shaft (2) passes over a clamping part of a limiting block (14), the spring I (13) is compressed, the baffle mechanism (9) is in contact with a partition plate (301) of the gear shifting box (3), an elastic positioning pin II (2002) of the high-low air valve (20) is compressed, an air outlet I (2003) is ventilated, and the auxiliary box is in a high-gear position;
when the gearbox is in a neutral gear position between 7 and 8 gears, the baffle mechanism (9) is compressed, and the driving cam (5) is in contact with the inner wall of the gear shifting box (3);
when the gearbox is in a neutral gear position between 1 gear and 2 gears, the reverse gear contact pin (21) is clamped in a reverse gear contact pin accommodating groove (202) of the gear shifting shaft (2);
when the gearbox is in a neutral gear of a reverse gear, the driving cam (5) is in contact with the partition plate (301) of the gear shifting box (3), and the tail end of the gear shifting shaft (2) is in contact with the reverse gear switch (15).
4. The novel transmission shifting mechanism of claim 1, wherein: the anti-blocking device also comprises a positioning plate (10) and an anti-blocking lock pin (18);
the anti-gear-disengaging lock pin (18) is arranged on the gear shifting box (3), and the lock pin part of the anti-gear-disengaging lock pin extends into a cavity II of the gear shifting box (3);
the positioning plate (10) is positioned in a cavity II of the gear shifting box (3); the positioning plate (10) is connected to the gear shifting shaft (2) through a clamping groove; and a clamping groove III (1001) which is matched with the lock pin part of the anti-disengaging lock pin (18) is arranged on the positioning plate (10).
5. The novel transmission shifting mechanism of claim 1, wherein: a connecting part (503) is extended from the outer wall of the driving cam (5); the locking block (7) is fixedly connected to a connecting part (503) of the outer wall of the driving cam (5).
6. The novel transmission shifting mechanism of claim 1, wherein: the clamping groove I (501) is a V-shaped groove.
7. The novel transmission shifting mechanism of claim 1, wherein: the elastic component is a spring II (19).
CN201911378744.6A 2019-12-27 2019-12-27 Novel gearbox gearshift Active CN110966402B (en)

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CN112360972A (en) * 2020-10-24 2021-02-12 重庆铁马变速箱有限公司 6 keep off gearshift

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DE3046885C2 (en) * 1980-12-12 1984-12-13 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Device for a manual transmission
DE19734130A1 (en) * 1997-08-07 1999-02-11 Zahnradfabrik Friedrichshafen Changer device for manual multispeed gear in utility vehicles
CN201137691Y (en) * 2007-11-08 2008-10-22 彪马集团浙江汽车研究院有限公司 Mechanical electrical hydraulic pneumatic integrated speed-changer gear shifting control module
CN103791078B (en) * 2012-11-01 2016-10-05 上海索达传动机械有限公司 Odd-side guard method and change speed gear box after after change speed gear box, odd-side protects system, change speed gear box
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