Shifting device for heavy-duty car speed variator
A technology for shifting devices and heavy-duty vehicles, which is applied in the directions of control devices, transmission device control, vehicle components, etc., can solve the problem that the shifting knob cannot be effectively limited laterally, the distance between the stressed parts of the shifting block becomes larger, and the transmission is damaged. and other problems, to achieve the effect of eliminating the phenomenon of disordered gears, improving the shifting performance, and clearing the shifting position.
Inactive Publication Date: 2012-07-04
SHANGHAI AUTOMOBILE GEAR WORKS
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Problems solved by technology
In order to realize the simplification of the structure of the shift block, this technology makes the distance between the stress-bearing parts of each shift block larger, resulting in that the shift head cannot effectively limit the lateral position after shifting into each gear position. It is prone to chaotic gears, which will lead to damage to the transmission in severe cases
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[0020] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.
[0021] Such as figure 1 As shown, this embodiment includes: a shift fork 1, a first limiting body 2, a second limiting body 3 and a third limiting body 4, wherein: the first limiting body 2, the second limiting body 3 and the third limiting body 4 are arranged in parallel on the same horizontal plane and in close contact with each other. The shift fork 1 is arranged above the first limiting body 2, the second limiting body 3 and the third limiting body 4 and connected with the three limiting bodies The position bodies are in contact with each other, and the third lim...
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A gear shift device for a heavy-duty automobile gearbox relates to the technical field of automotive engineering, which comprises a gear shift fork, a first limiting body, a second limiting body and a third limiting body, wherein the first limiting body, the second limiting body and the third limiting body are sequentially arrayed on an identical horizontal surface parallelly and are closely contacted with each other, the gear shift fork is arranged above the three limiting bodies and contacts with the three limiting bodies, and the limiting bodies are controlled independently by the left-and-right movement of the gear shift fork. The gear shift device is provided with a gear shift block with simple structure, realizes mutual limit of the fork and the block in the gear shift and gear selecting process by means of the design of a double-fork structure, avoids disordered gear, and increases the integral control property of the gearbox.
Description
technical field [0001] The invention relates to a device in the technical field of automobile engineering, in particular to a shifting device for a heavy-duty vehicle transmission. Background technique [0002] Due to its special use occasions, heavy-duty vehicles generally require more gears in the transmission. Common heavy-duty vehicle transmissions generally adopt the structure of the main and auxiliary boxes to expand the gears. The shifting operation method mainly adopts the main box manual operation and the auxiliary box air operation. There are two types of operating mechanisms: single H type and double H type. At present, there are two types of 9-speed box double H control mechanism commonly used in the market: single-fork toggle mechanism and double-fork toggle mechanism. The structure of the former is more complicated, and the processing of parts is also more difficult; The overall structure is simplified, but part of the shifting performance is also sacrificed. ...
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IPC IPC(8): F16H59/04B60K20/02
Inventor 黄鹏吕立表
Owner SHANGHAI AUTOMOBILE GEAR WORKS