CN112644446B - Emergency braking accelerating exhaust valve - Google Patents
Emergency braking accelerating exhaust valve Download PDFInfo
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- CN112644446B CN112644446B CN202011525177.5A CN202011525177A CN112644446B CN 112644446 B CN112644446 B CN 112644446B CN 202011525177 A CN202011525177 A CN 202011525177A CN 112644446 B CN112644446 B CN 112644446B
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- valve
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- exhaust
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/021—Railway control or brake valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/36—Other control devices or valves characterised by definite functions
- B60T15/42—Other control devices or valves characterised by definite functions with a quick braking action, i.e. with accelerating valves actuated by brake-pipe pressure variation
Abstract
The invention discloses an emergency braking accelerating exhaust valve which comprises an emergency valve body assembly and a pressure limiting valve assembly, wherein the emergency valve assembly comprises an emergency valve body assembly, a cylinder assembly, an air release valve seat assembly and an emergency piston, the air release valve seat assembly is arranged in the emergency valve body assembly, a brake pipe interface formed by the emergency valve body assembly is directly connected with a train brake pipe, the pressure limiting valve assembly comprises a pressure limiting valve body and a pressure limiting exhaust valve assembly, the pressure limiting exhaust valve assembly is arranged in the pressure limiting valve body, and an exhaust port is arranged on the pressure limiting valve body. The valve is directly connected with the brake pipe, can accelerate the air exhaust of the brake pipe through the large aperture of the valve when the train is emergently braked, improves the wave speed of the emergency brake of the train, stops the air exhaust when the air pressure of the train brake pipe is reduced to the preset pressure, and is favorable for relieving the whole train after the emergency brake of the train.
Description
Technical Field
The invention belongs to the technical field of emergency braking of railway vehicles, and particularly relates to an emergency braking acceleration exhaust valve.
Background
The emergency brake valve of the railway vehicle in China has the function of quickly discharging pressure air in the train pipe into the atmosphere when the train is emergently braked so as to induce the action of a vehicle brake system and realize the emergency brake of the vehicle.
When the existing train is emergently braked, the exhaust speed of the brake pipe is low, so that the emergency brake wave speed of the train is not high, and the pressure of a main pipe of the train is reduced to zero after the emergency brake valve of the train emergently brakes, so that the next relieving of the train is not facilitated.
Disclosure of Invention
The invention aims to: in order to solve the problems, the emergency braking acceleration exhaust valve which can keep a certain air pressure in the brake pipe after the emergency braking of the train is realized is provided.
The technical scheme of the invention is realized as follows: an emergency braking accelerating exhaust valve is characterized in that: the emergency valve assembly and the pressure limiting valve assembly form two parts;
the emergency valve assembly comprises an emergency valve body assembly, a cylinder assembly, a blow-off valve seat assembly and an emergency piston assembly, wherein the blow-off valve seat assembly and the emergency piston assembly are arranged in the emergency valve body assembly;
the pressure limiting valve assembly comprises a pressure limiting valve body and a pressure limiting exhaust valve assembly arranged in the pressure limiting valve body, wherein an exhaust port is arranged on the pressure limiting valve body, a valve port of the pressure limiting exhaust valve assembly is opened when a train is emergently braked, pressure air in a train brake pipe is exhausted to the atmosphere in an accelerating mode, the valve port of the pressure limiting exhaust valve assembly is closed when the pressure air is exhausted to a preset pressure, and the train brake pipe stops exhausting and keeps a certain air pressure.
The emergency braking accelerating exhaust valve comprises an air release valve cover and an emergency valve body, wherein the upper end of the emergency valve body is hermetically connected with the air release valve cover through a sealing element, the lower end of the emergency valve body is hermetically connected with an air cylinder assembly, and the lower cavity of the air release valve cover is communicated with a train brake pipe through an inclined hole.
The invention relates to an emergency braking accelerating exhaust valve, which comprises an exhaust valve, an exhaust valve spring and an emergency valve seat, wherein the upper end of the exhaust valve spring is abutted against the lower cavity of an exhaust valve cover, the lower end of the exhaust valve spring is abutted against the upper end surface of the exhaust valve, and the exhaust valve is tightly pressed and attached to a valve port of the emergency valve seat through the exhaust valve spring, so that the valve port of the exhaust valve is in a closed state.
The emergency braking accelerating exhaust valve comprises an emergency piston rod, a stabilizing spring, an upper piston plate, a lower piston plate, an emergency diaphragm plate and a nut, wherein the upper piston plate and the lower piston plate are installed at the lower end of the emergency piston rod through the nut, the edge of the inner side of the emergency diaphragm plate is clamped between the upper piston plate and the lower piston plate, the edge of the outer side of the emergency diaphragm plate is clamped between an emergency valve body and an air cylinder assembly, the stabilizing spring is sleeved on the periphery of the emergency piston rod, the upper end of the stabilizing spring abuts against the end face of one side of an emergency valve seat, and the lower end of the stabilizing spring abuts against the end face of one side of the upper piston plate.
The emergency braking accelerating exhaust valve is characterized in that the emergency piston rod is provided with a radial through hole, the radial through hole is communicated with an inner cavity formed by the air cylinder through an inflation hole, when the emergency piston rod is inflated, the inner cavity formed by the air cylinder is inflated through the radial through hole and the inflation hole on the emergency piston rod, and the inflation speed of the air cylinder is controlled through the radial through hole.
The air cylinder assembly of the emergency braking accelerating exhaust valve comprises a middle plate, an air cylinder barrel and an air cylinder cover plate, wherein the middle plate is connected with an emergency valve body formed by an emergency valve body, the upper end of the air cylinder barrel is hermetically connected with the middle plate, the lower end of the air cylinder barrel is hermetically connected with the air cylinder cover plate, the middle plate, the air cylinder barrel and the air cylinder cover plate form a closed air cylinder cavity together, and an inflation hole is formed in the middle plate and is used for communicating the air cylinder cavity with the emergency piston to form a lower side cavity.
The emergency braking accelerating exhaust valve is characterized in that a dust filter net is arranged at a brake pipe interface formed by an emergency valve body, and a shrinkage plug is arranged at a pressure limiting valve body interface formed by the pressure limiting valve body and the pressure limiting valve interface.
The pressure limiting exhaust valve assembly of the emergency braking accelerating exhaust valve comprises an exhaust valve seat, an exhaust valve, a pressure limiting spring and an adjusting screw plate, wherein one end of the pressure limiting spring abuts against the back end face of the exhaust valve, the other end of the pressure limiting spring abuts against the end face of the adjusting screw plate, and the adjusting screw plate is in threaded connection with the pressure limiting valve body and is used for adjusting the compression amount of the pressure limiting spring so as to control the required air pressure in a train brake pipe after emergency braking of a train.
The invention relates to an emergency braking accelerating exhaust valve, wherein a limiting column is arranged at the back of the exhaust valve and used for limiting the maximum stroke of the exhaust valve, a locking nut is arranged at the end part of a pressure limiting valve body, which is far away from an emergency valve assembly, and used for keeping fixed connection with the pressure limiting valve body after an adjusting screw plate is adjusted in place, and when a valve port of the pressure limiting exhaust valve assembly is closed, the distance between the end part of the limiting column and the adjusting screw plate is the maximum stroke distance of the exhaust valve.
The invention relates to an emergency braking accelerating exhaust valve, which is characterized in that a sleeve is arranged between the exhaust valve and the inner wall of a pressure limiting valve body, the exhaust valve can move relative to the sleeve along the axial direction of the sleeve to control the opening and closing of a valve port formed by the pressure limiting exhaust valve, an exhaust cover is arranged at the exhaust port, and when a train is braked emergently, pressure air in a train brake pipe is exhausted from the exhaust port through the exhaust cover.
The valve is directly connected with the brake pipe, can accelerate the air exhaust of the brake pipe through the large aperture of the valve when the train is emergently braked, improves the wave speed of the emergency brake of the train, stops the air exhaust when the air pressure of the train brake pipe is reduced to the preset pressure, and is favorable for relieving the whole train after the emergency brake of the train.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is a schematic structural view of the emergency valve assembly of the present invention.
Fig. 4 is a schematic structural view of the pressure limiting valve assembly of the present invention.
The labels in the figure are: 1 is an emergency valve component, 2 is a pressure limiting valve component, 101 is a brake pipe interface, 102 is a pressure limiting valve interface, 103 is an inflation hole, 104 is an air release valve cover, 105 is an emergency valve body, 106 is an inclined hole, 107 is an air release valve, 108 is an air release valve spring, 109 is an emergency valve seat, 110 is an emergency piston rod, 111 is a stabilizing spring, 112 is an upper piston plate, 113 is a lower piston plate, 114 is an emergency diaphragm plate, 115 is a nut, 116 is a middle plate, 117 is a cylinder barrel, 118 is a cylinder cover plate, 119 is a dust filter net, 201 is a pressure limiting valve body, 202 is an exhaust port, 203 is a compression plug, 204 is an exhaust valve seat, 205 is an exhaust valve, 206 is a pressure limiting spring, 207 is an adjusting screw plate, 208 is a limiting column, 209 is a sleeve, 210 is a locking nut, and 211 is an exhaust hood.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that the indication of the orientation or the positional relationship is based on the orientation or the positional relationship shown in the drawings, or the orientation or the positional relationship which is usually placed when the product of the present invention is used, or the orientation or the positional relationship which is usually understood by those skilled in the art, or the orientation or the positional relationship which is usually placed when the product of the present invention is used, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, cannot be understood as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be further noted that the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases by those skilled in the art; the drawings in the embodiments are used for clearly and completely describing the technical scheme in the embodiments of the invention, and obviously, the described embodiments are a part of the embodiments of the invention, but not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
As shown in figures 1 and 2, the emergency braking accelerating exhaust valve comprises an emergency valve assembly 1 and a pressure limiting valve assembly 2, wherein the emergency valve assembly is connected with a brake pipe through a flange plate, the connection is convenient and reliable, when the emergency braking of a train is sensed, the brake pipe is accelerated to exhaust through a large aperture, the pressure limiting valve assembly is in a spring direct load type, and the key point is that when required air pressure is reached, the pressure limiting valve assembly can be rapidly closed, so that the whole train after the emergency braking of the train is relieved. The exhaust valve is in a modular design, and the function is realized by overlapping the modules.
As shown in fig. 3, the emergency valve assembly 1 includes an emergency valve body assembly, a cylinder assembly, a blow-off valve seat assembly disposed in the emergency valve body assembly, and an emergency piston assembly, a brake pipe interface 101 of the emergency valve body assembly is directly connected to a train brake pipe, a dust filter 119 is arranged at the brake pipe interface 101 formed by the emergency valve body, so that dust and foreign matters are prevented from directly entering the valve in the using process, the service life of the valve is prolonged, the pressure limiting valve interface 102 of the emergency valve body assembly is connected with the pressure limiting valve assembly 2, the emergency piston assembly is arranged below the valve seat assembly of the air release valve, the brake pipe connector 101 is connected with an upper side chamber of the emergency piston assembly, the lower side of the emergency piston assembly is connected with an inner chamber of the cylinder assembly through an inflation hole 103 formed in the cylinder assembly, and the upper side chamber of the blow-off valve seat assembly is connected with the pressure limiting valve connector 102.
Specifically, the emergency valve body assembly comprises an air release valve cover 104 and an emergency valve body 105, the upper end of the emergency valve body 105 is hermetically connected with the air release valve cover 104 through a sealing element, the lower end of the emergency valve body 105 is hermetically connected with an air cylinder assembly, and the lower cavity of the air release valve cover 104 is communicated with a train brake pipe through an inclined hole 106; the air release valve seat assembly comprises an air release valve 107, an air release valve spring 108 and an emergency valve seat 109, wherein the upper end of the air release valve spring 108 abuts against the lower cavity of the air release valve cover 104, the lower end of the air release valve spring abuts against the upper end surface of the air release valve 107, the air release valve 107 is tightly pressed and attached to the valve port of the emergency valve seat 109 through the air release valve spring 108, and the valve port of the air release valve is in a closed state; the emergency piston assembly comprises an emergency piston rod 110, a stabilizing spring 111, an upper piston plate 112, a lower piston plate 113, an emergency diaphragm plate 114 and a nut 115, wherein the upper piston plate 112 and the lower piston plate 113 are installed at the lower end of the emergency piston rod 110 through the nut 115, the edge of the inner side of the emergency diaphragm plate 114 is clamped between the upper piston plate 112 and the lower piston plate 113, the edge of the outer side of the emergency diaphragm plate 114 is clamped between the emergency valve body 105 and the cylinder assembly, the stabilizing spring 111 is sleeved on the periphery of the emergency piston rod 110, the upper end of the stabilizing spring abuts against the end face of one side of the emergency valve seat 109, the lower end of the stabilizing spring abuts against the end face of one side of the upper piston plate 112, a radial through hole is formed in the emergency piston rod 110, the radial through hole is communicated with an inner cavity formed by the cylinders through the inflation holes 103, and when the emergency piston rod 110 is inflated, the inner cavity formed by the cylinders is inflated through the radial through hole and the inflation holes 103, the air charging speed of the air cylinder is controlled through the radial through hole.
The cylinder assembly comprises a middle plate 116, a cylinder barrel 117 and a cylinder cover plate 118, the cylinder barrel is processed by adopting a pipe, the practicability is strong, the economy is achieved, the middle plate 116 is connected with an emergency valve body 105 formed by an emergency valve body, the upper end of the cylinder barrel 117 is hermetically connected with the middle plate 116, the lower end of the cylinder barrel is hermetically connected with the cylinder cover plate 118, the middle plate 116, the cylinder barrel 117 and the cylinder cover plate 118 jointly form a closed cylinder cavity, and the inflation hole 103 is formed in the middle plate 116 and used for communicating the cylinder cavity with an emergency piston to form a lower side cavity.
As shown in fig. 4, the pressure limiting valve assembly 2 includes a pressure limiting valve body 201 and a pressure limiting exhaust valve assembly disposed in the pressure limiting valve body 201, an exhaust port 202 is disposed on the pressure limiting valve body 201, when a train is braked suddenly, a valve port of the pressure limiting exhaust valve assembly is opened, pressure air in a train brake pipe is exhausted to atmosphere at an accelerated speed, when the pressure air is exhausted to a preset pressure, the valve port of the pressure limiting exhaust valve assembly is closed, and the train brake pipe stops exhausting air and maintains a certain air pressure.
Specifically, the pressure-limiting exhaust valve assembly comprises an exhaust valve seat 204, an exhaust valve 205, a pressure-limiting spring 206 and an adjusting screw plate 207, wherein one end of the pressure-limiting spring 206 abuts against the back end face of the exhaust valve 205, the other end of the pressure-limiting spring abuts against the end face of the adjusting screw plate 207, when the pressure-limiting exhaust valve reaches the required air pressure, the exhaust valve is rapidly closed under the action of the pressure-limiting spring force, and the adjusting screw plate 207 is in threaded connection with the pressure-limiting valve body 201 and is used for adjusting the compression amount of the pressure-limiting spring 206 so as to control the required air pressure in a train brake pipe after the train is emergently braked; the back of the exhaust valve 205 is provided with a limit column 208 for limiting the maximum stroke of the exhaust valve 205, thereby easily controlling the exhaust flux and quickly resetting, well controlling the air pressure of the brake pipe, a sleeve 209 is arranged between the exhaust valve 205 and the inner wall of the pressure limiting valve body 201, the end part of the pressure limiting valve body 201 far away from the emergency valve assembly 1 is provided with a lock nut 210 for keeping fixed connection with the pressure limiting valve body 201 after the adjusting screw plate 207 is adjusted in place, a plug 203 is arranged at the interface of the pressure limiting valve body 201 connected with the pressure limiting valve interface 102 of the pressure limiting valve assembly 2, and an exhaust hood assembly 211 is arranged at the exhaust port 202.
The working principle of the invention is as follows:
(1) inflation
The middle plate is provided with a phi 4 inflating hole, the cylinder is inflated through the phi 4 inflating hole and a phi 0.45 radial through hole on the emergency piston rod, the phi 0.45 radial through hole is arranged to mainly control the inflating speed of the cylinder so as to keep the pressure balance of the upper side and the lower side of the emergency piston assembly and avoid the emergency braking of a train caused by too fast inflation, and the lower cavity of the valve cover is communicated with a train pipe through a phi 4 inclined hole.
(2) Service brake
During service braking, the air exhaust speed of the brake pipe is low, the speed of the air pressure of the air cylinder flowing back to the brake pipe can ensure that the capacity of enabling the emergency piston to move upwards continuously to jack the air exhaust valve cannot be formed on the upper side and the lower side of the emergency piston, and the air pressure of the air cylinder and the air exhaust valve cover flows to the brake pipe, so that the valve does not act during service braking.
(3) Emergency brake
The air exhaust speed of the brake pipe is high when the train is emergently braked, the air pressure of the air cylinder does not flow back to the train pipe, and enough air pressure difference is formed on two sides of the emergency piston to push the emergency piston to form a component to move upwards continuously to open the air release valve, so that an emergency air release effect is generated. Meanwhile, the pressure air of the air cylinder flows to the brake pipe through the middle plate phi 4 inflation hole and the emergency piston rod reverse flow hole and is exhausted to the atmosphere, so that the air exhaust of the brake pipe is accelerated when the train is subjected to emergency braking, and the emergency braking wave speed of the train is increased.
The pressure air flows to the pressure limiting valve assembly, the valve port of the exhaust valve is opened, the brake pipe pressure air is exhausted to the atmosphere in an accelerating mode, when the pressure air reaches the preset pressure, the exhaust valve formed by the pressure limiting valve is closed again under the action of the pressure limiting spring, and the brake pipe pressure stops exhausting, so that the brake pipe can keep certain air pressure after emergency braking, and the whole train relief after the emergency braking of the train is facilitated. At this time, the emergency piston assembly of the emergency valve is reset under the combined action of the air release valve spring, the stabilizing spring and the pressure air, and the air release valve port is closed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An emergency braking accelerating exhaust valve is characterized in that: the emergency valve consists of an emergency valve assembly (1) and a pressure limiting valve assembly (2);
the emergency valve assembly (1) comprises an emergency valve body assembly, a cylinder assembly, a blow-down valve seat assembly and an emergency piston assembly, wherein the blow-down valve seat assembly and the emergency piston assembly are arranged in the emergency valve body assembly, a brake pipe interface (101) of the emergency valve body assembly is directly connected with a train brake pipe, a pressure limiting valve interface (102) of the emergency valve body assembly is connected with the pressure limiting valve assembly (2), the emergency piston assembly is arranged below the blow-down valve seat assembly, the brake pipe interface (101) is connected with an upper side cavity of the emergency piston assembly, the lower side of the emergency piston assembly is connected with an inner cavity of the cylinder assembly through an inflation hole (103) formed in the cylinder assembly, and the upper side cavity of the blow-down valve seat assembly is connected with the pressure limiting valve interface (102);
the pressure limiting valve assembly (2) comprises a pressure limiting valve body (201) and a pressure limiting exhaust valve assembly arranged in the pressure limiting valve body (201), an exhaust port (202) is arranged on the pressure limiting valve body (201), when a train is emergently braked, a large enough air pressure difference is formed on two sides of an emergency piston formed by the emergency piston to push the emergency piston assembly to move upwards to open an exhaust valve, pressure air in a train brake pipe flows to the pressure limiting valve assembly (2), a valve port formed by the pressure limiting exhaust valve assembly is opened, the pressure air in the train brake pipe is exhausted to the atmosphere in an accelerating mode, when the pressure air is exhausted to a preset pressure, the valve port formed by the pressure limiting exhaust valve is closed, the train brake pipe stops exhausting air, and a certain air pressure is reserved.
2. The emergency braking accelerated exhaust valve of claim 1, wherein: the emergency valve body comprises an air release valve cover (104) and an emergency valve body (105), the upper end of the emergency valve body (105) is in sealing connection with the air release valve cover (104) through a sealing piece, the lower end of the emergency valve body (105) is in sealing connection with a cylinder, and the lower cavity of the air release valve cover (104) is communicated with a train brake pipe through an inclined hole (106).
3. The emergency braking accelerated exhaust valve of claim 2, wherein: the air release valve seat assembly comprises an air release valve (107), an air release valve spring (108) and an emergency valve seat (109), wherein the upper end of the air release valve spring (108) abuts against the lower cavity of the air release valve cover (104), the lower end of the air release valve spring abuts against the upper end face of the air release valve (107), the air release valve (107) is tightly pressed and attached to a valve port of the emergency valve seat (109) through the air release valve spring (108), and the valve port of the air release valve is in a closed state.
4. The emergency braking accelerated exhaust valve of claim 2, wherein: the emergency piston assembly comprises an emergency piston rod (110), a stabilizing spring (111), an upper piston plate (112), a lower piston plate (113), an emergency diaphragm plate (114) and a nut (115), wherein the upper piston plate (112) and the lower piston plate (113) are installed at the lower end of the emergency piston rod (110) through the nut (115), the edge of the inner side of the emergency diaphragm plate (114) is clamped between the upper piston plate (112) and the lower piston plate (113), the edge of the outer side of the emergency diaphragm plate (114) is clamped between an emergency valve body (105) and a cylinder assembly, the stabilizing spring (111) is sleeved on the periphery of the emergency piston rod (110), the upper end of the stabilizing spring abuts against one side end face of an emergency valve seat (109), and the lower end of the stabilizing spring abuts against one side end face of the upper piston plate (112).
5. The emergency braking accelerated exhaust valve of claim 4, wherein: the emergency piston rod (110) is provided with a radial through hole, the radial through hole is communicated with an inner cavity formed by the cylinders through the inflation hole (103), and when the emergency piston rod is inflated, the inner cavity formed by the cylinders is inflated through the radial through hole in the emergency piston rod (110) and the inflation hole (103), and the inflation speed of the cylinders is controlled through the radial through hole.
6. The emergency braking accelerated exhaust valve of claim 2, wherein: the cylinder assembly comprises a middle plate (116), a cylinder barrel (117) and a cylinder cover plate (118), the middle plate (116) is connected with an emergency valve body (105) consisting of an emergency valve body, the upper end of the cylinder barrel (117) is hermetically connected with the middle plate (116), the lower end of the cylinder barrel is hermetically connected with the cylinder cover plate (118), the middle plate (116), the cylinder barrel (117) and the cylinder cover plate (118) jointly form a closed cylinder cavity, and the inflation hole (103) is formed in the middle plate (116) and used for communicating the cylinder cavity with the emergency piston to form a lower side cavity.
7. The emergency braking accelerated exhaust valve of claim 6, wherein: a dust filter net (119) is arranged at a brake pipe interface (101) formed by the emergency valve body, and a plug (203) is arranged at an interface of a pressure limiting valve body (201) connected with the pressure limiting valve interface (102) of the pressure limiting valve assembly (2).
8. The emergency brake accelerated exhaust valve of any of claims 1 to 7, wherein: the pressure-limiting exhaust valve assembly comprises an exhaust valve seat (204), an exhaust valve (205), a pressure-limiting spring (206) and an adjusting screw plate (207), one end of the pressure-limiting spring (206) abuts against the back end face of the exhaust valve (205), the other end of the pressure-limiting spring abuts against the end face of the adjusting screw plate (207), and the adjusting screw plate (207) is in threaded connection with the pressure-limiting valve body (201) and is used for adjusting the compression amount of the pressure-limiting spring (206) so as to control the required air pressure in a train brake pipe after emergency braking of a train.
9. The emergency braking accelerated exhaust valve of claim 8, wherein: the back of the exhaust valve (205) is provided with a limiting column (208) for limiting the maximum stroke of the exhaust valve (205), the end part of the pressure limiting valve body (201) far away from the emergency valve assembly (1) is provided with a locking nut (210) for keeping fixed connection with the pressure limiting valve body (201) after the adjusting screw plate (207) is adjusted in place, and when a valve port of the pressure limiting exhaust valve assembly is closed, the distance between the end part of the limiting column (208) and the adjusting screw plate (207) is the maximum stroke distance of the exhaust valve (205).
10. The emergency braking accelerated exhaust valve of claim 8, wherein: a sleeve (209) is arranged between the exhaust valve (205) and the inner wall of the pressure limiting valve body (201), the exhaust valve (205) can move relative to the sleeve (209) along the axial direction of the sleeve to control the opening and closing of a valve port formed by the pressure limiting exhaust valve, an exhaust hood assembly (211) is arranged at the exhaust port (202), and when a train is emergently braked, pressure air in a train brake pipe is exhausted from the exhaust port (202) through the exhaust hood assembly (211).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011525177.5A CN112644446B (en) | 2020-12-22 | 2020-12-22 | Emergency braking accelerating exhaust valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011525177.5A CN112644446B (en) | 2020-12-22 | 2020-12-22 | Emergency braking accelerating exhaust valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112644446A CN112644446A (en) | 2021-04-13 |
| CN112644446B true CN112644446B (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011525177.5A Active CN112644446B (en) | 2020-12-22 | 2020-12-22 | Emergency braking accelerating exhaust valve |
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| CN (1) | CN112644446B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2079143U (en) * | 1990-10-31 | 1991-06-19 | 陈仲明 | Composite distribute valve of pneumatic brake |
| CN201062039Y (en) * | 2007-07-27 | 2008-05-21 | 铁道科学研究院机车车辆研究所 | Air control valve for 120 type freight car |
| CN202180819U (en) * | 2011-08-16 | 2012-04-04 | 江苏今创车辆有限公司 | Emergency valve for decompression braking of train |
| DE102012009427B4 (en) * | 2012-05-11 | 2013-11-21 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Control valve device for a rail vehicle brake |
| CN203472848U (en) * | 2013-08-13 | 2014-03-12 | 瑞立集团瑞安汽车零部件有限公司 | Integrated valve |
| CN106080649B (en) * | 2016-08-09 | 2018-03-02 | 眉山中车制动科技股份有限公司 | A kind of multifunctional emergency valve |
-
2020
- 2020-12-22 CN CN202011525177.5A patent/CN112644446B/en active Active
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| CN112644446A (en) | 2021-04-13 |
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