Heavy-duty diesel engine split type rocker arm brake mechanism for commercial vehicle

A heavy-duty diesel engine and braking mechanism technology, applied in the direction of machine/engine, engine components, mechanical equipment, etc., can solve the problems of difficult assembly and maintenance, low light weight, poor braking effect, etc., to achieve convenient assembly and maintenance, The effect of high light weight and low cost

Active Publication Date: 2017-09-08
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and problems of low reliability, high cost, low light weight, complex structure, difficult assembly and maintenance, and poor braking effect existing in the prior art, and provide a high reliability, low cost , high light weight, simple structure, convenient assembly and maintenance, good braking effect commercial vehicle heavy-duty diesel engine split rocker brake mechanism

Method used

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  • Heavy-duty diesel engine split type rocker arm brake mechanism for commercial vehicle
  • Heavy-duty diesel engine split type rocker arm brake mechanism for commercial vehicle
  • Heavy-duty diesel engine split type rocker arm brake mechanism for commercial vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] see Figure 1 to Figure 8, a commercial vehicle heavy-duty diesel engine split rocker brake mechanism, including a rocker body 1, one end of the rocker body 1 is hinged to a roller 2 through a first pin 11, and the roller 2 is in contact with a cam 3 , the other end of the rocker arm body 1 is provided with a swing mechanism, the middle part of the rocker arm body 1 is provided with a main mounting hole 12, and the rocker arm body 1 is installed on the rocker arm shaft 5 through the main mounting hole 12; The mechanism includes a swing head 4, a first adjusting bolt 41, and a roller 42. One end of the swing head 4 is provided with a mounting cavity 43, the other end of the swing head 4 is provided with a first mounting hole 44, and the middle of the swing head 4 is provided with a The second installation hole 45, the bottom of the swing head 4 is provided with a leaf spring 46, one end of the leaf spring 46 is fixed on the bottom of the swing head 4, and the other end o...

Embodiment 2

[0048] Basic content is the same as embodiment 1, the difference is:

[0049] see Figure 1 to Figure 8 , the leaf spring 46 includes a flat portion 417 and a curled portion 418, the flat portion 417 is fixed on the bottom of the swing head 4 by a spring fastening screw 411, and the curled portion 418 is press-fitted on the bottom of the rocker body 1; A spring pressing piece 412 is installed between the plane portion 417 and the spring fastening screw 411 , and an end of the spring pressing piece 412 close to the curled portion 418 is arranged in a curled shape.

Embodiment 3

[0051] Basic content is the same as embodiment 1, the difference is:

[0052] see Figure 1 to Figure 8 , the hydraulic system also includes an overload protection system, the overload protection system includes an overflow spring 65, a disc-shaped piston 66, a piston clip 67, a hydraulic chamber is arranged in the cylinder 68, the overflow spring 65, The disc-shaped piston 66 and the piston clamp 67 are all arranged in the hydraulic chamber, one end of the overflow spring 65 is in contact with the bottom of the hydraulic chamber, the other end of the overflow spring 65 is in contact with one end of the disc-shaped piston 66, and the disc-shaped piston 66 is in contact with the disc-shaped piston. The other end of the type piston 66 is in contact with the piston clip 67. The second adjusting bolt 61 includes a connected elongated tip and the adjusting bolt body. In contact with each other, an overflow groove 610 is arranged on the inner peripheral surface of the hydraulic cha...

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Abstract

A heavy-duty diesel engine split type rocker arm brake mechanism for a commercial vehicle comprises a rocker arm body, a swing mechanism and a hydraulic drive system; the rocker arm body is mounted on a rocker arm shaft through a main mounting hole, the swing mechanism comprises a swing head, a first adjusting bolt and a rolling column, the swing head is mounted on the rocker arm body, a sheet-shaped spring is arranged at the bottom of the swing head, and is pressed on the bottom of the rocker arm body, a ball head of the first adjusting bolt is mounted in a ball socket in an elephant foot shape, the hydraulic drive system comprises a hydraulic plunger with a return spring sleeved, a second adjusting bolt in contact with the hydraulic plunger and a rocker arm cam in threaded connection with the hydraulic plunger, the hydraulic plunger is mounted in a drive cavity of the rocker arm body, the rocker arm cam makes contact with the rolling column, a brake hydraulic oil way communicated with the main mounting hole, the drive cavity and a swing arm shaft hydraulic oil hole is arranged in the rocker arm body, and the heavy-duty diesel engine split type rocker arm brake mechanism is high in reliability, low in cost, high in lightweight degree, simple in structure, convenient to assemble and maintain and good in brake effect.

Description

technical field [0001] The invention relates to the field of rocker arm brakes for heavy-duty diesel engines of commercial vehicles, in particular to a split-type rocker arm brake mechanism for heavy-duty diesel engines for commercial vehicles, which is mainly suitable for improving reliability, reducing costs, improving light weight, simplifying structure, facilitating assembly and Maintain and strengthen the braking effect. Background technique [0002] The commercial vehicle heavy-duty diesel engine rocker brake is an auxiliary braking device integrated on the commercial vehicle engine. Long-distance commercial vehicles need to use brakes frequently on long and gentle slope roads, and commercial vehicles without auxiliary braking devices such as engine brakes need to constantly use wheel brakes with foot brakes to reduce vehicle speed. However, on long and gentle slope roads, using wheel brakes for a long time will cause the temperature of the brake pads to rise too fast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L13/06F01L1/18F01M9/10
CPCF01L1/18F01L13/065F01M9/10Y02T10/40
Inventor 范雨张芳吴囿霖吴红亮
Owner DONGFENG COMML VEHICLE CO LTD
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