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Braking mechanism for preventing roller from flying off engine

A braking mechanism and engine technology, applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve the problems of insufficient braking power, poor braking effect, flying off, etc., and achieve the elimination of abnormal noise and increased wear, The effect of simple structure and low cost

Inactive Publication Date: 2021-01-01
GUANGXI YUCHAI MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current slow-speed braking technology route in the industry - vented braking, the braking power is low, the braking power does not meet the requirements of the national regulations GB7258, the braking effect is poor, and the user is not satisfied, and the existing braking device roller cannot guarantee the cam Constant contact, there is a risk of flying off

Method used

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  • Braking mechanism for preventing roller from flying off engine
  • Braking mechanism for preventing roller from flying off engine
  • Braking mechanism for preventing roller from flying off engine

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Embodiment Construction

[0021] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0022] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0023] figure 1 It is a structural schematic diagram of the spring in the released state of the brake mechanism for preventing the roller from flying off the engine according to an embodiment of the present invention. figure 2 It is a structural schematic diagram of the spring in the compressed state of the brake mechanism for preventing the roller from flying off the engine according to an embodiment of the present inven...

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Abstract

The invention discloses a braking mechanism for preventing a roller from flying off an engine. The braking mechanism comprises a braking rocker arm, a valve cap, a braking exhaust valve, a spring assembly, a braking cam and a driving piston. The valve cap is connected with the braking rocker arm. The braking exhaust valve is connected with the braking rocker arm. The spring assembly is integratedon the braking rocker arm of the exhaust valve. The braking cam is connected with the roller of the braking rocker arm, and the braking cam is provided with a CR braking protrusion and a BGR braking protrusion. The driving piston is integrated on the braking rocker arm, the driving piston can move up and down, and the driving piston is used for pushing the valve cap and the braking exhaust valve.The spring assembly is used for ensuring that the roller of the braking rocker arm is always in contact with the braking cam. Therefore, the braking mechanism for preventing the roller from flying offthe engine is simple and reasonable in structure, in the braking process of the engine, the roller is always in contact with the cam and does not fly off, and abnormal sound and abrasion aggravationcaused by the fact that the roller impacts the cam are eliminated.

Description

technical field [0001] The invention relates to the technical field of rocker brakes dedicated to engine overhead camshafts, in particular to a brake mechanism for preventing rollers from flying off the engine. Background technique [0002] According to national regulations GB7258-2017: Passenger cars with a vehicle length greater than 9m (for special school buses, the vehicle length is greater than 8m), trucks and special operation vehicles with a total weight greater than or equal to 12000kg, and dangerous goods transport vehicles with a total weight greater than 3500kg, should be equipped with slow decelerator or other auxiliary braking device. [0003] The current slow-speed braking technology route in the industry - vented braking, the braking power is low, the braking power does not meet the requirements of the national regulations GB7258, the braking effect is poor, and the user is not satisfied, and the existing braking device roller cannot guarantee the cam Constan...

Claims

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Application Information

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IPC IPC(8): F01L13/06
CPCF01L13/065
Inventor 林振丽吴定勇苏怀林
Owner GUANGXI YUCHAI MASCH CO LTD
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