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An emergency brake release valve and its valve core locking method

A technology of emergency braking and air release valve, applied in the direction of lift valve, valve details, valve device, etc., can solve the problems of low exhaust efficiency, affecting the braking effect of emergency air release valve, unstable valve core position, etc., to achieve tightness Good, fast and effective ventilation, simple structure effect

Active Publication Date: 2019-04-09
NINGBO GUOCHUANG LOCOMOTIVE EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there is a problem with the above-mentioned emergency braking. When the valve core is opened, the position is controlled only by air pressure, the position of the valve core is extremely unstable, and the exhaust efficiency is low, which affects the braking effect of the emergency air release valve.

Method used

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  • An emergency brake release valve and its valve core locking method
  • An emergency brake release valve and its valve core locking method
  • An emergency brake release valve and its valve core locking method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] See Figure 1 to Figure 3 As shown, it is a cross-sectional view of the emergency brake vent valve in a closed state, a cross-sectional view in an open state, and a cross-sectional view of the valve body of the present invention.

[0031] Combine figure 1 with image 3 As shown, an emergency brake vent valve includes a valve body 1, a valve cover 2, a valve core 3, a push rod 4, and a locking mechanism. The valve body 1 is provided with an air inlet chamber 11 and a vent chamber 12, so A valve port 6 is provided between the air inlet chamber 11 and the air discharge chamber 12, the valve cover 2 is detachably connected with the valve body 1, and a thrust spring is provided between the valve cover 2 and the bottom of the valve core 3 21. The top of the valve core 3 bears against the valve port 6, so that the air release valve is in a normally closed state, one end of the push rod 4 penetrates into the valve body 1 and is in contact with the top of the valve core 3, and the p...

Embodiment 2

[0037] An emergency brake vent valve as described above, this embodiment differs from it in that, figure 1 As shown, the locking mechanism includes a steel ball A 51, an elastic element, and an adjustment member for adjusting the amount of expansion and contraction of the elastic element. The steel ball A51 is supported by the elastic element and falls into one of the limiting grooves. It is used to fix the position of the push rod 4 to lock the valve core.

[0038] Among them, in this embodiment, such as figure 1 As shown, the elastic element is preferably a positioning spring 52, and the adjusting member is preferably an adjusting bolt 53; adjusting the adjusting bolt 53 can adjust the tension of the positioning spring 52, thereby adjusting the steel ball A 51 and the limit groove Locking force. When the air release valve is in the closed state, the steel ball A 51 falls into the lower locking groove 42, and the stress point of the push rod 4 is the upper trapezoidal edge of th...

Embodiment 3

[0040] An emergency brake vent valve as described above, this embodiment differs from it in that: Picture 11 with Picture 12 As shown, the limiting groove is a trapezoidal groove, that is, the upper locking groove 41 and the lower locking groove 42 are both trapezoidal grooves, and the angles between the upper and lower trapezoidal sides and the bottom side are obtuse angles. The angle between the trapezoid side and the bottom side is 90°+α 1 , The angle between the lower trapezoidal side and the bottom side is 90°+α 2 . The α 1 The range of is 20°~60°, which is to reduce the force of pushing the push rod 4 and prevent the valve core 3 from being locked, causing the air release valve to fail to realize the function of emergency air release; the α 2 The range of is 0°~45°, which is beneficial for the air release valve to prevent the valve core 3 from rebounding in the case of emergency braking.

[0041] The force F 1 Decomposed into vertical force F Rod And the horizontal force ...

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PUM

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Abstract

The invention provides an emergency braking air outlet valve comprising a valve body, a valve cover, a valve element, a push rod and a locking mechanism. An air inlet chamber and an air outlet chamber are formed inside the valve body; a valve port is formed between the air inlet chamber and the air outlet chamber; the valve cover is provided with a thrust spring; the top of the valve element abuts against the valve port, so that the air outlet valve is in a normally-closed state; and an upper locking groove and a lower locking groove are formed in the push rod. The invention further provides a valve element locking method. When the air outlet valve is in a closed state, the locking mechanism acts on the lower locking groove, the position of the push rod is locked, the valve element bears force to upwards seal the valve port, and thus the air inlet chamber and the air outlet chamber are separated; and when bearing force to move downwards, the push rod pushes the valve element to move downwards, the air inlet chamber and the air outlet chamber communicate, the air outlet valve is opened, emergency air outlet is achieved, the locking mechanism acts on the upper locking groove, the position of the push rod is locked, and thus the valve element locking function is achieved. The emergency braking air outlet valve has the valve element locking function and is simple in structure and capable of achieving rapid and efficient air outlet.

Description

Technical field [0001] The invention relates to the technical field of rail vehicle braking, in particular to an emergency brake air release valve and a valve core locking method thereof. Background technique [0002] In modern locomotives and rolling stock, the emergency braking part is generally set as an emergency vent valve directly controlled by the air pressure of the train brake pipe. The emergency vent valve is an extremely important independent component in the locomotive brake. It can accept various situations The emergency braking train brake pipe decompression speed makes the air of the train brake pipe exhaust to the atmosphere, realizing rapid braking. Among them, the spool of the emergency air release valve is directly controlled by the air pressure in the brake pipe of the train. It is inflated into the air inlet chamber through the brake pipe of the train. A pressure difference is formed on both sides of the spool to balance the spool. During emergency braking, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K27/12F16K1/36F16K1/32
CPCF16K1/32F16K1/36F16K27/12
Inventor 王成名朱金波
Owner NINGBO GUOCHUANG LOCOMOTIVE EQUIP
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