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Clutch/brake integrated assembly and automatic gear switching method thereof

A technology of brakes and clutches, applied in the combination of couplings and brakes, mechanical equipment, etc., can solve the problems of inability to realize power shifting, etc., and achieve the effect of small size, simple and compact structure, and a small number of parts

Inactive Publication Date: 2016-01-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the problem that electric vehicles in the prior art cannot realize power shifting

Method used

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  • Clutch/brake integrated assembly and automatic gear switching method thereof
  • Clutch/brake integrated assembly and automatic gear switching method thereof
  • Clutch/brake integrated assembly and automatic gear switching method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment

[0033] figure 1 , figure 2 for existing technology. For details, refer to the background technology section.

[0034] Combine below image 3 , Figure 4 Describe the main structure of the clutch / brake integrated assembly of the present invention, which adopts two hydraulic wet multi-disc friction clutches (two sets of hydraulically driven wet multi-disc friction assemblies are integrated axially), including an integrated clutch drum 301, clutch Hub 319, brake friction assembly, clutch friction assembly, oil inlet bushing 305, hydraulic cylinder 304, piston 313, return spring 312, spring seat 311, R-type expansion ring seal ring 310 and O-type seal ring 314;

[0035] The integrated clutch drum 301 is rigidly connected with the (tandem) hydraulic cylinder 304, and the piston 313, return spring 312 and spring seat 311 are sequentially installed in the hydraulic cylinder 304;

[0036] The hydraulic cylinder 304, the piston 313 and the O-ring 314 form two axially arranged hyd...

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Abstract

The invention discloses a clutch / brake integrated assembly and an automatic gear switching method thereof. The clutch / brake integrated assembly is mainly composed of an integrated clutch drum, a clutch hub, an input shaft, a braking friction assembly, a clutch friction assembly, an oil inflow shaft sleeve, a hydraulic cylinder, a piston, a return spring, a spring seat, an R-shaped packing ring sealing ring, an O-shaped sealing ring and the like. The integrated clutch drum is fixedly connected with the hydraulic cylinder together. The hydraulic cylinder is supported on the oil inflow shaft sleeve through two needle bearings. The piston, the return spring and the spring seat are installed in the hydraulic cylinder. The clutch friction assembly is connected to the right end of the clutch drum and the input shaft. The braking friction assembly is connected to the left end of the clutch drum and the oil inflow shaft sleeve. The R-shaped packing ring sealing ring is installed in an annular groove of the oil inflow shaft sleeve. Two friction pairs are controlled by a hydraulic system to be engaged and disengaged, the clutch and braking functions can be achieved, the power gear shifting function can be achieved through the proper cooperation of the two friction pairs, and the two wet multi-sheet friction pairs are axially integrated into a whole. The clutch / brake integrated assembly has the beneficial effects of being compact in structure, small in size, small in part number and the like.

Description

technical field [0001] The invention relates to an automatic shifting mechanism, in particular to a clutch / brake integrated assembly and a gear automatic switching method thereof. Background technique [0002] At present, with the intensification of energy and environmental problems, electric vehicles have been developed rapidly and have broad prospects for promotion and application, and the transmission system is a key component. Due to the working characteristics of the drive motor, the current domestic fixed-ratio reducer matching the electric vehicle cannot make the drive motor run more in the high-efficiency zone, which reduces the power and economy of the electric vehicle. Therefore, various enterprises, institutions, and colleges have proposed two-speed automatic transmission schemes for electric vehicles. The core of the two-speed automatic transmission lies in the automatic shifting actuator and its control device. In the existing technical solutions, the motor-dri...

Claims

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Application Information

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IPC IPC(8): F16D67/04
Inventor 罗玉涛
Owner SOUTH CHINA UNIV OF TECH
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