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A New Type of Transmission Shifting Mechanism
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A technology of shifting mechanism and gearbox, applied in the field of gearbox, can solve the problem that the position of the shifting fork block is difficult to ensure consistent, and achieve the effect of clear gear position, avoiding random gears, and large gear shifting redundancy.
Active Publication Date: 2021-02-09
CHONGQING BEIBEN TRANSMISSION MFG
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Problems solved by technology
However, due to the large number of components involved, it is difficult to ensure the consistent position of the fork block
Method used
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Embodiment 1
[0041] This embodiment discloses a novel gearbox shifting mechanism, see figure 1 , including shift shaft 2, shift box 3, neutral positioning device 4, drive cam 5, lock block 7, baffle mechanism 9, positioning plate 10, drive block 11, limit mechanism, reverse gear switch 15, neutral gear switch 17 , anti-off gear lock pin 18, high and low gas valve 20 and reverse gear contact pin 21.
[0042] The shift box 3 has a partition 301 inside. The partition 301 separates the inner space of the shift box 3 to form a cavity I and a cavity II.
[0043] One end of the shift shaft 2 is connected to the shifting mechanism of the whole vehicle, and the other end penetrates into the cavity I of the shift box 3, passes through the partition plate 301, and extends into the cavity II. The shift shaft 2 is movably connected with the shift 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...
Embodiment 2
[0066] This embodiment discloses a relatively basic implementation method, a new type of gearbox shifting mechanism, see figure 1 , including shift shaft 2, shift box 3, neutral gear positioning device 4, drive cam 5, lock block 7, baffle mechanism 9, drive block 11, limit mechanism, reverse gear switch 15, neutral gear switch 17, high and low air barrier Valve 20 and reverse gear contact pin 21 .
[0067] The shift box 3 has a partition 301 inside. The partition 301 separates the inner space of the shift box 3 to form a cavity I and a cavity II.
[0068] One end of the shift shaft 2 is connected to the shifting mechanism of the whole vehicle, and the other end penetrates into the cavity I of the shift box 3, passes through the partition plate 301, and extends into the cavity II. The shift shaft 2 is movably connected with the shift box 3 . The shift shaft 2 can perform axial movement and rotational movement. The shift shaft 2 protrudes into a flange 201 on the end outer w...
Embodiment 3
[0084] The main structure of this embodiment is the same as that of Embodiment 2. Further, the high and 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 connected to the resistance chamber of the auxiliary tank cylinder. The air outlet I2003 corresponds to the elastic positioning pin II2002, and the air outlet I2003 is connected to the high gear cavity of the auxiliary tank cylinder.
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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 bafflemechanism, a driving block, a limiting mechanism, a reverse gear switch, a neutral gear switch, a high-low gear air valve and a reverse gear contact pin. A partition plate is arranged in the gear shifting box. The partition plate divides the internal space of the gear shifting box into a cavity I and a cavity II. One end of the gear shifting shaft is connected with a whole vehicle gear shifting control mechanism, and the other end penetrates into the gear shifting box cavity I, penetrates through the partition plate and extends into the cavity II. The gear shifting redundancy is high, a guidegroove is arranged in the locking block, the corresponding shifting fork block enters the guide groove and other gear shifting fork blocks are stopped when gear shifting operation is performed. The gear disorder phenomenon caused by the position difference of the shifting fork blocks is avoided, the gears are clearer, and it is guaranteed that the gear selecting and shifting functions can be accurately realized under the condition of the position difference of the gear shifting fork shaft caused by the size difference of the drum type gearbox.
Description
technical field [0001] The invention belongs to the technical field of gearboxes, and in particular relates to a novel gearbox shifting mechanism. Background technique [0002] Gearbox shifting mechanism requires clear gear position and has a gear position indication function at the same time. The shift fork of the barrel gearbox is conveniently arranged, and the shift fork can be relatively concentrated, which is beneficial to the design of the shift mechanism. The shift fork block is generally designed with a card slot, that is, the driving cam on the shift mechanism acts on the shift fork block, thereby driving the shift fork shaft to move axially to realize the shift function. However, due to the large number of parts involved, it is difficult to ensure that the position of the shift fork is consistent. [0003] Therefore, there is a need for a gearbox shifting mechanism in the prior art to solve the above problems. Contents of the invention [0004] The technical s...
Claims
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Application Information
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