Running airbraking circuit protection device for commercial vehicles
A technology of circuit protection and air brake, applied in the direction of brake safety system, pipeline layout, etc., can solve problems such as difficult to reach, brake safety hazards, etc., achieve reliable use, reasonable structure, improve braking performance and safety sexual effect
Active Publication Date: 2010-11-10
ANHUI HUALING AUTOMOBILE
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Problems solved by technology
[0002] Existing commercial vehicles are usually equipped with Type II (front and rear) dual-circuit air brake systems. For models with unequal numbers of wheels on the front and rear axles (such as 6X4 and 6X2 models), when the number of rear wheels with more wheels When the circuit fails, it can only be braked by the wheels on the axle with fewer wheels, and it is difficult to meet the standards of ECE regulations under heavy load conditions: that is, when the circuit brake fails, the braking deceleration of the whole vehicle MFDD≥2.2m / s 2 , there are often potential safety hazards in braking
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[0011] From figure 1 , figure 2 It can be seen from the figure that: a commercial vehicle driving air brake circuit protection device, including foot brake valve 1, air pipeline A3 and air pipeline B4, rear axle relay valve 6, front axle relay valve 10, connected in series from the double cavity The foot brake valve 1 is connected to the air outlet line A3 and the air line B4, the air line A3 is connected to the signal port on the rear axle relay valve 6, and the left air intake port on the rear axle relay valve 6 is connected with a pipe The upper side air outlet port on the rear axle relay valve 6 is connected with the air chamber of each rear wheel brake 9 with the main air line D8, and is connected from the foot brake valve 1 The air line B4 of the air line is connected with the signal interface on the front axle relay valve 10, and its feature is: a two-way check valve I 2 is set on the air line A3 to divide the air line A3 into two sections, so that the right section b...
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The invention relates to a running airbraking circuit protection device for commercial vehicles, belonging to a vehicle airbraking device. The invention is characterized in that an air pipeline A is provided with a bi-pass one-way valve I which divides the air pipeline A into two sections, wherein the right section is an air pipeline C; the bi-pass one-way valve I is a triple valve, the left and right air inlets thereof can be communicated with an air outlet on the upper part thereof; a piston capable of slipping left and right is arranged in the inner cavity of the valve; the air pipeline A is communicated with the left air inlet of the bi-pass one-way valve I; the right air inlet of the bi-pass one-way valve I is communicated with an air pipeline B; the air outlet of the bi-pass one-way valve I is communicated with the signal interface of a rear axle relay valve through the air pipeline C; a rear axle main air pipeline D is provided with a bi-pass one-way valve II and is communicated with the air outlet of the bi-pass one-way valve II; the right section of the air pipeline B is communicated with the right air inlet of the bi-pass one-way valve II; and the air outlet of the rear axle relay valve is communicated with the left air inlet of the bi-pass one-way valve II, thus the vehicle braking can still reach regulatory requirements when a rear axle fails in braking.
Description
technical field [0001] The invention belongs to an air brake device for a commercial vehicle, in particular to an air brake protection device. Background technique [0002] Existing commercial vehicles are usually equipped with Type II (front and rear) dual-circuit air brake systems. For models with unequal numbers of wheels on the front and rear axles (such as 6X4 and 6X2 models), when the number of rear wheels with more wheels When the circuit fails, it can only be braked by the wheels on the axle with fewer wheels, and it is difficult to meet the standards of ECE regulations under heavy load conditions: that is, when the circuit brake fails, the braking deceleration of the whole vehicle MFDD≥2.2m / s 2 , There are often potential safety hazards in braking. Contents of the invention [0003] The purpose of the present invention is to provide a commercial vehicle driving air brake circuit protection device to ensure that when the axle brakes with many wheels fail, the brak...
Claims
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IPC IPC(8): B60T17/04B60T17/18
Inventor 汤海洋张永晖
Owner ANHUI HUALING AUTOMOBILE