Cutout cock for railway vehicle

Abstract

The utility model relates to the technical field of cutout cocks, and discloses a cutout cock for railway vehicles, which comprises a main pipe, a U-shaped auxiliary pipe is mounted on the outer wall of one side of the main pipe, mounting blocks are mounted on the inner walls of output ends of two sides of the auxiliary pipe respectively, a hydraulic cylinder is mounted on one side of one mounting block, a piston plate is mounted at the telescopic end of the hydraulic cylinder, and a piston rod is mounted on the piston plate. The outer wall of the piston plate is sleeved with a sealing ring, an abutting ring is installed on the inner wall, located on one side of the piston plate, of the auxiliary pipe, the abutting ring corresponds to the piston plate in position, and a pressure sensor is installed on the outer wall, close to one side of the main pipe, of the auxiliary pipe. And therefore, the pressure sensor detects that the pressure is increased, the hydraulic cylinder can drive the piston plate and the abutting ring to relieve limiting under the cooperation of intelligent connection, gas can be conveniently discharged from the auxiliary pipe, the gas is normally output, and the safety coefficient of a train is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of cut-off cock doors, in particular to a cut-off cock door for a rail vehicle. Background Art

[0002] The shut-off valve is used to close the brake pipe and cut off the passage of the main air cylinder to charge the brake pipe. The valve must be opened at the brake operating end and closed at the non-brake operating end. If the non-brake operating end valve is not closed and the valve handle is in the release position, if the brake is applied at this time, the brake will not work. The shut-off valves used in rail passenger cars put into use on the market are basically sealed with polytetrafluoroethylene sealing seats.

[0003] The patent document with the authorized publication number CN211525587U discloses a shut-off valve for rail vehicles, including a joint, a pressure cover is provided on the upper end face of the stop ring, a hexagonal screw is provided on the upper end face of the valve stem, a handle is provided on one side of the pressure cover, an anti-slip pad is provided on the outer surface of the handle, a cover cap is provided on the upper end face of the pressure cover, a positioning rod is provided on one side of the cover cap, a thread is provided on the inner side face of the cover cap, and the cover cap is movably connected to the top of the pressure cover by the thread by setting the thread and the cover cap. When repairing the shut-off valve, the maintenance personnel can quickly remove the cover cap from the pressure cover and unscrew the hexagonal screw for maintenance, thereby preventing the pressure cover from being damaged during maintenance, saving time for the maintenance personnel, and by setting the positioning rod, when closing the shut-off valve, the handle is stopped by the positioning rod when it moves to the positioning rod, thereby limiting the position of the handle and enabling the handle to be accurately reset.

[0004] During the use of the above devices and traditional shut-off valves, the internal parts may be worn, corroded, poorly lubricated, or blocked by external substances. If the shut-off valve is stuck, the braking system may not work properly, posing a serious threat to the safe operation of the train. Utility Model Content

[0005] The purpose of the utility model is to provide a cut-off valve for rail vehicles, which solves the problem that the internal parts of the above devices and traditional cut-off valves may be worn, corroded, poorly lubricated, or blocked by external substances during use. If the cut-off valve is stuck, the braking system may not work properly, posing a serious threat to the safe operation of the train.

[0006] An embodiment of the present application provides a shut-off valve for a rail vehicle, comprising a main pipe, an outer wall of one side of the main pipe is installed with a secondary pipe, the secondary pipe is U-shaped, and the inner walls of the output ends on both sides of the secondary pipe are respectively installed with mounting blocks, a hydraulic cylinder is installed on one side of one of the mounting blocks, a piston plate is installed on the telescopic end of the hydraulic cylinder, a sealing ring is sleeved on the outer wall of the piston plate, a butt ring is installed on the inner wall of the secondary pipe located on one side of the piston plate, the positions of the butt ring and the piston plate correspond, a pressure sensor is installed on the outer wall of the secondary pipe close to the main pipe, the sensing end of the pressure sensor extends to the junction of the main pipe and the secondary pipe, the hydraulic cylinder and the pressure sensor are intelligently connected, and a main valve mechanism is arranged inside the main pipe.

[0007] By adopting the above technical solution, when the main valve mechanism inside the main pipe gets stuck, the pressure at the inlet end of the main pipe and the position of the butt ring will increase, so that the pressure sensor detects the pressure increase, and the hydraulic cylinder can drive the piston plate and the butt ring to release the limit with the cooperation of the intelligent connection, thereby facilitating the gas to escape from the auxiliary pipe, thereby allowing the gas to be output normally and enhancing the safety factor of the train.

[0008] Optionally, connectors are fixedly mounted on both ends of the main pipe, and a side of the main pipe close to the piston plate is an inlet.

[0009] By adopting the above technical solution, the main pipe can fix the connector, and the connector can connect the main pipe with other pipes.

[0010] Optionally, a valve core is rotatably mounted on the inner wall of the main pipe, a rotating rod is mounted on the outer wall above the valve core, and the rotating rod rotatably penetrates the inner wall of the main pipe and extends to the outer wall above the main pipe.

[0011] By adopting the above technical solution, the valve core can be driven to rotate inside the main pipe by rotating the rotating rod, so as to facilitate the circulation of gas inside the main pipe.

[0012] Optionally, a mounting seat is installed on the outer wall of the main pipe above the rotating rod, the rotating rod passes through the mounting seat, and a handle is installed on the upper end of the rotating rod above the mounting seat.

[0013] By adopting the above technical solution, the main pipe can fix the mounting base, and the setting of the handle can facilitate the staff to rotate the rotating rod.

[0014] Optionally, another one of the mounting blocks is fixedly mounted with a spring on one side, and a vent cylinder is mounted on the side of the spring away from the mounting block.

[0015] By adopting the above technical solution, the spring can be fixed by the mounting block, and the spring can reset and adjust the air vent cylinder.

[0016] Optionally, a vent hole is provided inside the vent cylinder, and the vent cylinder is slidably connected to the inner wall of the auxiliary pipe.

[0017] By adopting the above technical solution, the gas circulation can be facilitated by setting the air vent holes.

[0018] Optionally, the interior of the main pipe and the auxiliary pipe is coated with an anti-corrosion material.

[0019] By adopting the above technical solution, the main pipe and the auxiliary pipe can be protected by the anti-corrosion material.

[0020] Optionally, a rubber sleeve is provided on the outer wall of the valve core.

[0021] By adopting the above technical solution, the valve core can be sealed by the provision of the rubber sleeve.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] According to the technical solution of the present application, when the main valve mechanism inside the main pipe gets stuck, the pressure at the inlet end of the main pipe and the position of the butt ring will increase, so that the pressure sensor detects the pressure increase, and the hydraulic cylinder can drive the piston plate and the butt ring to release the limit with the cooperation of the intelligent connection, thereby facilitating the gas to escape from the auxiliary pipe, thereby allowing the gas to be output normally and enhancing the safety factor of the train. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0025] Figure 1 It is a front view schematic diagram of a cut-off plug door for a rail vehicle according to the utility model;

[0026] Figure 2 It is a top view of a partial cross-sectional view of a cut-off plug door for a rail vehicle according to the utility model;

[0027] Figure 3 It is a right side schematic diagram of a vent cylinder with a cut-off plug for a rail vehicle according to the utility model;

[0028] Figure 4 It is a right side schematic diagram of a hydraulic cylinder for a cut-off plug door for a rail vehicle according to the utility model;

[0029] Figure 5 The utility model is a front view schematic diagram of a valve core of a cut-off plug valve for a rail vehicle.

[0030] In the figure: 1. main pipe; 2. auxiliary pipe; 3. mounting block; 4. hydraulic cylinder; 5. piston plate; 6. sealing ring; 7. back ring; 8. air vent; 9. air vent hole; 10. spring; 11. connector; 12. valve core; 13. mounting seat; 14. rotating rod; 15. handle; 16. pressure sensor. DETAILED DESCRIPTION

[0031] See also Figure 1-4 The utility model provides a technical solution: a cut-off plug for a rail vehicle, comprising a main pipe 1, a sub-pipe 2 is installed on the outer wall of one side of the main pipe 1, the sub-pipe 2 is U-shaped, mounting blocks 3 are installed on the inner walls of the output ends on both sides of the sub-pipe 2, a hydraulic cylinder 4 is installed on one side of one mounting block 3, a piston plate 5 is installed on the telescopic end of the hydraulic cylinder 4, a sealing ring 6 is sleeved on the outer wall of the piston plate 5, a butt ring 7 is installed on the inner wall of the sub-pipe 2 located on one side of the piston plate 5, and the positions of the butt ring 7 and the piston plate 5 correspond, a pressure sensor 16 is installed on the outer wall of the sub-pipe 2 close to the main pipe 1, the sensing end of the pressure sensor 16 extends to the junction of the main pipe 1 and the sub-pipe 2, the hydraulic cylinder 4 and the pressure sensor 16 are intelligently connected, and a main valve mechanism is arranged inside the main pipe 1;

[0032] Another mounting block 3 is fixedly mounted with a spring 10 on one side, and a venting cylinder 8 is mounted on the side of the spring 10 away from the mounting block 3 . A venting hole 9 is provided inside the venting cylinder 8 , and the venting cylinder 8 is slidably connected to the inner wall of the auxiliary pipe 2 .

[0033] In the technical solution of the utility model, when the main valve mechanism inside the main pipe 1 is stuck, the pressure at the inlet end of the main pipe 1 and the position of the butt ring 7 will increase, so that the pressure sensor 16 detects the pressure increase, and the hydraulic cylinder 4 can drive the piston plate 5 and the butt ring 7 to release the limit with the cooperation of the intelligent connection, thereby facilitating the gas to escape from the auxiliary pipe 2, thereby allowing the gas to be output normally and enhancing the safety factor of the train.

[0034] In addition, the mounting block 3 can fix the spring 10, and the spring 10 can reset and adjust the air vent cylinder 8. The air vent hole 9 can facilitate the flow of gas.

[0035] In the technical solution of the utility model, if Figure 1 , Figure 2 and Figure 5As shown, a valve core 12 is rotatably installed on the inner wall of the main pipe 1, and a rotating rod 14 is installed on the outer wall above the valve core 12. The rotating rod 14 rotatably penetrates the inner wall of the main pipe 1 and extends to the outer wall above the main pipe 1. The valve core 12 can be driven to rotate inside the main pipe 1 by rotating the rotating rod 14, which is convenient for the circulation of gas inside the main pipe 1. A mounting seat 13 is installed on the outer wall of the main pipe 1 above the rotating rod 14. The rotating rod 14 penetrates the mounting seat 13. A handle 15 is installed on the upper end of the rotating rod 14 above the mounting seat 13. The mounting seat 13 can be fixed by the main pipe 1, and the setting of the handle 15 can facilitate the staff to rotate the rotating rod 14.

[0036] In the technical solution of the utility model, if Figure 1 and Figure 2 As shown, connectors 11 are fixedly installed at both ends of the main pipe 1, and the side of the main pipe 1 close to the piston plate 5 is an inlet. The main pipe 1 can fix the connector 11, and the connector 11 can connect the main pipe 1 with other pipelines.

[0037] In the technical solution of the utility model, if Figure 2 and Figure 5 As shown, the interior of the main pipe 1 and the auxiliary pipe 2 are coated with anti-corrosion material, which can protect the main pipe 1 and the auxiliary pipe 2. The outer wall of the valve core 12 is provided with a rubber sleeve, which can seal the valve core 12.

[0038] When in use, first, when the valve core 12 inside the main pipe 1 is stuck, the pressure at the inlet end of the main pipe 1 and the position of the annular ring 7 will increase, so that the pressure sensor 16 detects the pressure increase, and the hydraulic cylinder 4 can drive the piston plate 5 and the annular ring 7 to release the limit under the cooperation of the intelligent connection, so as to facilitate the gas to be discharged from the auxiliary pipe 2, so that the gas can be output normally, and the safety factor of the train is enhanced. The gas can push the venting cylinder 8 to move, and then facilitate the gas to flow from the venting hole 9, and the spring 10 can play a role in resetting and regulating the venting cylinder 8;

[0039] When the internal pressure of the main pipe 1 is too high, as the fluid passes through the main pipe 1 and the auxiliary pipe 2, the pressure sensor 16 monitors the pressure change in real time. If the pressure reaches or exceeds the preset threshold, the control system will send a signal to activate the hydraulic cylinder 4. The hydraulic cylinder 4 pushes the piston plate 5 to move in the auxiliary pipe 2, compressing the fluid in the auxiliary pipe 2, thereby increasing the pressure at the junction of the auxiliary pipe 2 and the main pipe 1, or adjusting the pressure as needed, which can also enhance the safety factor.

Claims

1. A cut-off plug for a rail vehicle, characterized in that: The invention comprises a main pipe (1), an outer wall of one side of the main pipe (1) is installed with a secondary pipe (2), the secondary pipe (2) is arranged in a U shape, and the inner walls of the output ends on both sides of the secondary pipe (2) are respectively installed with mounting blocks (3), a hydraulic cylinder (4) is installed on one side of one of the mounting blocks (3), a piston plate (5) is installed at the telescopic end of the hydraulic cylinder (4), a sealing ring (6) is sleeved on the outer wall of the piston plate (5), a retaining ring (7) is installed on the inner wall of the secondary pipe (2) located on one side of the piston plate (5), and the positions of the retaining ring (7) and the piston plate (5) correspond, a pressure sensor (16) is installed on the outer wall of the secondary pipe (2) close to the main pipe (1), the sensing end of the pressure sensor (16) extends to the junction of the main pipe (1) and the secondary pipe (2), the hydraulic cylinder (4) and the pressure sensor (16) are intelligently connected, and a main valve mechanism is arranged inside the main pipe (1).

2. A cut-off plug door for a rail vehicle according to claim 1, characterized in that: Connectors (11) are fixedly mounted at both ends of the main pipe (1), and the side of the main pipe (1) close to the piston plate (5) is an inlet.

3. A cut-off plug door for a rail vehicle according to claim 1, characterized in that: A valve core (12) is rotatably mounted on the inner wall of the main pipe (1), and a rotating rod (14) is mounted on the outer wall above the valve core (12). The rotating rod (14) rotatably penetrates the inner wall of the main pipe (1) and extends to the outer wall above the main pipe (1).

4. A cut-off plug door for a rail vehicle according to claim 3, characterized in that: A mounting seat (13) is installed on the outer wall of the main pipe (1) above the rotating rod (14), the rotating rod (14) passes through the mounting seat (13), and a handle (15) is installed on the upper end of the rotating rod (14) above the mounting seat (13).

5. The cut-off plug door for a rail vehicle according to claim 1, characterized in that: Another of the mounting blocks (3) has a spring (10) fixedly mounted on one side, and a degassing cylinder (8) is mounted on the side of the spring (10) away from the mounting block (3).

6. A cut-off plug door for a rail vehicle according to claim 5, characterized in that: A degassing hole (9) is provided inside the degassing cylinder (8), and the degassing cylinder (8) is slidably connected to the inner wall of the auxiliary pipe (2).

7. A cut-off plug door for a rail vehicle according to claim 6, characterized in that: The interior of the main pipe (1) and the auxiliary pipe (2) is coated with an anti-corrosion material.

8. The cut-off plug door for a rail vehicle according to claim 3, characterized in that: The outer wall of the valve core (12) is provided with a rubber sleeve.

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