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A shift mechanism and power-assisted technology, applied in the field of the shift mechanism of a manual transmission of a truck, can solve the problems affecting the normal driving of the vehicle, difficult shifting operations, and difficulty in shifting, so as to avoid accidental shifting and improve shifting efficiency. , the effect of simple structure
Inactive Publication Date: 2018-05-04
CHINA FIRST AUTOMOBILE
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Description
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Problems solved by technology
[0004] On a commercial vehicle with manual transmission, due to the large torque transmitted by the gearbox, if the timing of shifting is not selected prope
Method used
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Embodiment 1
[0024] refer to figure 1 Embodiments of the present invention will be described.
[0025] Pneumatic-assisted manual shift mechanism, including booster cylinder 1, hydraulic lock 2, reversing valve 3, slider 7, shift arm 4 and casing 5, wherein booster cylinder 1 is connected with hydraulic lock 2, and hydraulic lock 2 is connected with Reversing valve 3 is connected.
[0026] One end of the shift swing arm 4 is connected to the shell 5 through a hinge, on which a slider 7 is installed, and the slider 7 can also move up and down along the shift swing arm 4, and the slider 7 is connected to the piston rod of the booster cylinder 1 through a hinge, .
[0027] The reversing valve 3 is connected with the shifting arm 4, and when the shifting handle 4 swings, it can drive the reversing valve 6 to change the flow direction of the compressed air.
[0028] The reversing valve 6 is a three-position three-way valve of the middle seal type.
[0029] When working, the driver's shifting...
Embodiment 2
[0031] refer to figure 2 Embodiments of the present invention will be described.
[0032] The reversing valve 6 is a two-position three-way valve, and the remaining parts are the same as in the first embodiment.
Embodiment 3
[0034] refer to image 3 Embodiments of the present invention will be described.
[0035] This embodiment is suitable for occasions where the reliability of gear shifting is not high, and the hydraulic lock 2 is eliminated in the air circuit, and the rest is the same as the second embodiment.
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Abstract
The invention discloses an air-assisted manual gear shifting mechanism. The air-assisted manual gear shifting mechanism is characterized in that the air-assisted manual gear shifting mechanism comprises an assistance air cylinder, a reversing valve, a sliding block, a gear shifting swing arm and a shell; the assistance air cylinder is connected with the reversing valve; one end of the gear shifting swing arm is connected with the shell through hinge; the sliding block is mounted on the gear shifting swing arm and can slide along the gear shifting swing arm up and down; the sliding block is connected with a piston rod of the assistance air cylinder through a hinge as well; and the reversing valve is connected with the gear shifting swing arm, and when the gear shifting swing arm swings, thereversing valve can be driven to act, and the flowing direction of compressed air is changed. Extra gear shifting force is increased through the mode of additionally arranging the assistance air cylinder on the gear shifting swing arm, and a driver is assisted in the actions of gear disengagement and gear shifting.
Description
technical field [0001] The invention relates to a vehicle gearbox control mechanism, in particular to a truck manual gearbox shift mechanism. Background technique [0002] The gearbox is the main speed change mechanism in the car drive train, and in most cars is the only speed change mechanism. The gearbox is also usually used to allow the car to travel in reverse and to interrupt the power transmission without the engine being turned off. A gearbox with a limited number of fixed value transmission ratios that can provide selective transformation is called a stepped gearbox. Generally speaking, the more gears there are in the gearbox, the better it is for the engine to work, and the better the power and fuel economy of the car. [0003] The gearbox is mainly composed of two parts: the speed change transmission mechanism and the control mechanism. The former part is mainly composed of multiple sets of intermeshing gears, which are used to transmit the torque output by the ...
Claims
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Application Information
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