Stop valve with manual emergency function

Abstract

A stop valve with a manual emergency function comprises a valve body, an oil duct is designed in the valve body, one side of the oil duct is communicated with the outside through an oil inlet, and the other side of the oil duct is communicated with the outside through an oil outlet; and a manual throttle valve and an electromagnetic valve are respectively arranged outside the valve body, and the manual throttle valve and the electromagnetic valve are used for manually or automatically disconnecting or connecting the oil duct. According to the stop valve with the manual emergency function, an electric driving mode and a manual driving mode are integrated, and the emergency capacity is improved.

Description

Technical Field

[0001] This utility model relates to a stop valve, and more particularly to a stop valve with a manual emergency function, which allows the valve to be opened and closed manually when the electric system fails. Background Technology

[0002] When a vehicle is reversing, there is a force between the hooks of the tractor and trailer. This causes the master cylinder to output pressure, resulting in braking on the trailer, which negatively impacts reversing. On good roads, this negative effect is negligible due to the relatively small rolling resistance of the tires. However, if the tires are in a ditch while reversing, the force between the hooks of the tractor and trailer will be significant, increasing the braking force on the trailer and making reversing extremely difficult. The reversing stop valve is connected to both the trailer's master cylinder and the brake. When the tractor is in reverse, the stop valve is energized and closed, preventing brake fluid from entering the brake calipers from the trailer's master cylinder. The reversing stop valve effectively avoids this adverse effect.

[0003] Existing reversing shut-off valves are generally suitable for civilian vehicles, but the reliability and environmental adaptability of civilian products cannot meet military requirements. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a shut-off valve with manual emergency function, which integrates electric and manual dual drive modes, improves emergency response capability, and can meet military requirements.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A shut-off valve with manual emergency function includes a valve body, an oil passage installed inside the valve body, one side of the oil passage being connected to the outside through an oil inlet, and the other side of the oil passage being connected to the outside through an oil outlet; a manual throttle valve and a solenoid valve are respectively installed outside the valve body, the manual throttle valve and the solenoid valve being able to manually or automatically disconnect or connect the oil passage.

[0007] The oil passage includes a manual oil inlet passage and a manual oil outlet passage. One end of the manual oil inlet passage is connected to the oil inlet, and the other end is connected to the inlet of the manual throttle valve. One end of the manual oil outlet passage is connected to the outlet of the manual throttle valve, and the other end is connected to the transition passage. The transition passage is connected to the upper part of the installation channel, and the valve core of the solenoid valve is set in the installation channel. The lower end of the installation channel is connected to the oil outlet.

[0008] The valve body is made of aluminum alloy.

[0009] The outer surface of the valve body is anodized.

[0010] The manual throttle valve, solenoid valve, and valve body are detachably installed and their connections are sealed with sealing rings.

[0011] The transition channel is arranged horizontally, with one side connected to the outside, and the end connected to the outside is sealed with a nut screwed in.

[0012] The manual throttle valve and solenoid valve are both standard parts.

[0013] This utility model provides a shut-off valve with a manual emergency function, which has the following technical advantages:

[0014] 1) A solenoid valve and a manual throttle valve are installed on the oil passage of the valve body. Compared with the traditional shut-off valve, the addition of the manual throttle valve enables the product to manually close the oil circuit. Even if the solenoid valve fails unexpectedly, the product can still work normally, thus improving reliability.

[0015] 2) This device (reversing shut-off valve) is mainly used in military tractors. The valve body is made of aluminum alloy with anodized surface treatment, and the outer surfaces of other parts are zinc-nickel plated, making the device adaptable to various harsh environments. Its salt spray resistance is improved to 256 hours, and its protection rating is IP67, eliminating any adverse effects on reversing. This product has passed a life test of 300,000 cycles under temperature cycling conditions from -43℃ to 80℃. Major components use standard parts, and all interfaces use standard sizes and have error-proof designs. Compared with traditional electromagnetic shut-off valves, its reliability, operability, and maintainability are significantly improved.

[0016] 3) This application consists of three main parts: valve body, solenoid valve, and manual throttle valve. The solenoid valve and manual throttle valve are standard parts that are directly installed on the valve body. Brake oil enters the valve body, passes through the manual throttle valve and solenoid valve in sequence, and is then output to the brake slave cylinder. The overall structure is compact, flexible in operation, and small in installation volume. The overall length, width and height are 122*50*144mm.

[0017] In addition, the solenoid valve and manual throttle valve can be detachably installed on the outside of the valve body, which facilitates emergency operation and maintenance.

[0018] 4) The valve body is made of aluminum alloy and has a surface anti-corrosion treatment, which makes the device meet the requirements of vehicle lightweighting and effectively improves corrosion resistance and heat dissipation performance. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic diagram of the structure of the present invention (first perspective).

[0021] Figure 2 This is a simplified cross-sectional view of the present invention (both the solenoid valve and the manual throttle valve are closed).

[0022] Figure 3This is a simplified cross-sectional view of the present invention (both the solenoid valve and the manual throttle valve are open).

[0023] Figure 4 This is a schematic diagram of the structure of the present invention (second perspective).

[0024] In the diagram: 1. Valve body; 2. Oil inlet; 3. Oil outlet; 4. Manual oil inlet channel; 5. Manual oil outlet channel; 6. Manual throttle valve; 7. Inlet; 8. Outlet; 9. Installation channel; 10. Solenoid valve; 11. Transition channel; 12. Nut; 13. Sealing ring. Detailed Implementation

[0025] like Figure 1-4 As shown, a shut-off valve with a manual emergency function includes a valve body 1. The lower part of the valve body 1 has an oil inlet 2 on one side and an oil outlet 3 on the other side. The upper part of the valve body 1 has a manual oil inlet channel 4 and a manual oil outlet channel 5. One end of the manual oil inlet channel 4 is connected to the oil inlet 2, and the other end is connected to the inlet 7 of a manual throttle valve 6 outside the valve body 1. One end of the manual oil outlet channel 5 is connected to the outlet 8 of the manual throttle valve 6. The other upper part of the valve body 1 has an installation channel 9. A solenoid valve 10 is installed on the upper part of the valve body 1, with its valve core extending into the installation channel 9. The upper part of the installation channel 9 is connected to a transition flow channel 11, and the lower end of the installation channel 9 is connected to the oil outlet 3.

[0026] The oil inlet 2 and oil outlet 3 are arranged horizontally, and the bottom of the valve is designed with 4 mounting threaded holes. The horizontal arrangement facilitates the installation and operation of the shut-off valve, and also facilitates the connection and layout of the vehicle's oil pipes.

[0027] The manual oil inlet channel 4, the manual oil outlet channel 5, and the installation channel 9 are arranged vertically, which facilitates the installation of the throttle valve 6 and the solenoid valve 10.

[0028] The transition channel 11 is horizontally arranged, with one side connected to the outside. The connected end is screwed into the threaded hole at the end of the transition channel 11 with a nut 12 to seal the end of the transition channel 11. The fact that one side of the transition channel 11 is connected to the outside facilitates the use of machined holes, improves machining accuracy, and results in a higher surface finish than cast oil passages.

[0029] The manual throttle valve 6 and solenoid valve 10 are both standard parts. The solenoid valve is model LSV-08-2 NOSP-L-2XER, and the throttle valve is model DVP8-1-10. The surfaces of the manual throttle valve 6 and solenoid valve 10 have been treated with a special corrosion-resistant surface treatment.

[0030] The manual throttle valve 6 opens and closes the oil passage by rotating the handle, controlling the valve core of the manual throttle valve 6 to move up and down (rotating the valve core upwards opens the oil passage; rotating the valve core downwards closes the oil passage). The solenoid valve 10 opens and closes the oil passage by energizing the solenoid coil above it, causing the valve core to be attracted upwards or disengaged downwards (when energized, the valve core moves upwards to open the oil passage; when de-energized, the valve core moves downwards to close the oil passage).

[0031] The solenoid valve 10 adopts a redundant design: it is a two-position, two-normally closed solenoid valve with a maximum working pressure of 25 MPa and a maximum operating flow rate of 18.9 L / min, which fully meets the requirements of a maximum shut-off pressure of not less than 15 MPa and a maximum operating flow rate of 15 L / min. The electrical connectors have a waterproof and dustproof rating of IP67.

[0032] Preferably, the valve body 1 is made of aluminum alloy and the outer surface is anodized.

[0033] Traditional valve seats are mostly made from stainless steel casting blanks followed by precision machining. Large-volume valve blocks are cumbersome to machine, costly, and prone to quality defects such as porosity and shrinkage cavities due to their high density. This product's valve seat uses aluminum alloy material with low density, excellent mechanical properties, good machinability, and superior thermal conductivity and corrosion resistance. The external dimensions are designed for machining from standard aluminum alloy profile blanks, saving processing costs and shortening the processing cycle. The outer surface is anodized, which improves both corrosion resistance and the overall quality of the product.

[0034] Preferably, the manual throttle valve 6, the solenoid valve 10 and the valve body 1 are detachably installed and the connection is sealed by the sealing ring 13 to ensure the sealing of the connection.

[0035] This device is used on vehicles. When the tractor is in reverse gear, the solenoid valve is energized and closed, isolating the master cylinder from the wheel cylinder (duration is not limited); when the tractor is in drive gear, the solenoid valve is de-energized and opened, connecting the master cylinder from the wheel cylinder; the manual throttle valve has a manual closing function, which can also isolate the master cylinder from the wheel cylinder, greatly improving the reliability of operation.

[0036] Working principle and process:

[0037] 1) During normal driving, both the manual throttle valve 6 and the solenoid valve 10 are open. When the brake fluid enters this shut-off valve, it first flows through the manual throttle valve 6, then through the transition channel 11 and the solenoid valve 10, and finally through the valve seat to the brake caliper. When the driver presses the brake pedal, the brake fluid can quickly transmit pressure to each brake caliper of the trailer to achieve the braking function.

[0038] 2) During reversing, after receiving a reversing signal, the reversing stop valve closes the solenoid valve 10, cutting off the flow of brake fluid. This prevents the pressure from the brake pedal from being transmitted to the trailer brake calipers, effectively preventing braking action caused by misoperation or other factors while the trailer is reversing. If the solenoid valve fails to respond, the manual throttle valve 6 can be manually closed, similarly cutting off the flow of brake fluid.

Claims

1. A shut-off valve with manual emergency function, characterized in that: Includes valve body (1), with an oil passage installed inside the valve body (1). One side of the oil passage is connected to the outside through an oil inlet (2), and the other side of the oil passage is connected to the outside through an oil outlet (3). A manual throttle valve (6) and a solenoid valve (10) are installed outside the valve body (1). The manual throttle valve (6) and the solenoid valve (10) can manually or automatically disconnect or connect the oil passage. The oil passage includes a manual oil inlet passage (4) and a manual oil outlet passage (5). One end of the manual oil inlet passage (4) is connected to the oil inlet (2), and the other end of the manual oil inlet passage (4) is connected to the inlet (7) of the manual throttle valve (6). One end of the manual oil outlet passage (5) is connected to the outlet (8) of the manual throttle valve (6), and the other end is connected to the transition passage (11). The transition passage (11) is connected to the upper part of the installation passage (9), and the valve core of the solenoid valve (10) is set in the installation passage (9). The lower end of the installation passage (9) is connected to the oil outlet (3).

2. A shut-off valve with manual emergency function according to claim 1, characterized in that: The valve body (1) is made of aluminum alloy.

3. A shut-off valve with manual emergency function according to claim 2, characterized in that: The outer surface of the valve body (1) is anodized.

4. A shut-off valve with manual emergency function according to claim 3, characterized in that: The manual throttle valve (6), solenoid valve (10) and valve body (1) are detachable and the connection is sealed by a sealing ring (13).

5. A shut-off valve with manual emergency function according to claim 4, characterized in that: The transition channel (11) is arranged horizontally, and one side is connected to the outside. The end connected to the outside is sealed by screwing in a nut (12).

6. A shut-off valve with manual emergency function according to claim 5, characterized in that: The manual throttle valve (6) and solenoid valve (10) are both standard parts.

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