Emergency rescue device of wheeled armored car braking system

Abstract

The utility model discloses an emergency rescue device for a braking system of a wheeled armored vehicle, and belongs to the technical field of military vehicles. According to the device, the three-way valve is integrated on the main gas path between the air compressor and the anti-freezing device to form a bypass gas path, when a vehicle gas path or circuit breaks down, gas of an external gas source can bypass the fault compressor, is treated by the anti-freezing device and then is directly injected into a brake gas storage bottle and a brake cylinder, hand braking is quickly relieved, and braking force is provided for traction; the original vehicle gas circuit structure does not need to be greatly changed; the device adopts a universal inflation interface, is matched with common tire inflation equipment and other armored car auxiliary inflation pipes, and solves the problem that special equipment for a battlefield is insufficient; and the brake pressure can be recovered in a short time by combining an external air source, and soft traction safe movement is supported. The system has the characteristics of quick response, cross-platform compatibility and high reliability, is suitable for emergency repair of the wheeled armored vehicle in an electromagnetic fault, gas circuit leakage or low-temperature environment, and remarkably improves military training and battlefield rescue efficiency and vehicle survivability.

Description

Technical Field

[0001] This utility model relates to the field of military vehicle technology, and in particular to an emergency rescue device for the braking system of a wheeled armored vehicle. Background Technology

[0002] The air system of a wheeled armored vehicle is a crucial part of its normal operation, primarily providing compressed air for the air braking system. The air compressor compresses the gas, stores it in an accumulator, and then delivers it through pipelines to core components such as the brake control valves and brake cylinders, driving the parking brake and service brake functions. Under normal circumstances, the air compressor operates continuously to ensure sufficient air pressure (typically ≥6 bar) is maintained in the accumulator to support normal vehicle movement and braking.

[0003] However, wheeled armored vehicles face severe challenges in training and combat environments, with frequent malfunctions in their pneumatic and electrical systems, seriously affecting vehicle safety and mission performance.

[0004] (1) Circuit failure leading to air circuit paralysis: If the air compressor stops due to electromagnetic interference, power interruption or other reasons, the air accumulator cannot replenish the air pressure, the vehicle will be unable to release the handbrake and completely lose its mobility.

[0005] (2) Gas leakage and low temperature ice blockage: Gas leakage may occur due to aging or damage to gas connection. Existing antifreeze devices are mostly located at the end of the gas line and cannot handle gas from external emergency gas sources. In low temperature environments, water freezing can easily cause gas blockage.

[0006] (3) Limitations of traditional emergency solutions: Existing technologies rely on backup air pumps or redundant air circuit designs, which are complex and costly. Furthermore, military air circuit interfaces are incompatible with civilian equipment, making it difficult to quickly obtain dedicated air filling equipment in battlefield environments.

[0007] (4) High risk of towing and rescue: When a vehicle loses its mobility, traditional towing and rescue relies on rigid towing vehicles (which are not equipped in sufficient proportion), while flexible towing has safety hazards such as skidding and collision because the disabled vehicle has no braking force. According to statistics, the accident rate of flexible towing without braking force is more than 40% higher than that of rigid towing.

[0008] Furthermore, the complexity of maintaining the pneumatic system and the harsh training and combat environments (such as sandstorms, high humidity, and extreme cold) further exacerbate the risk of malfunction. Existing technologies have failed to effectively solve these problems, necessitating an emergency rescue device that is simple in structure, has a rapid response, and is adaptable to training and combat environments. Summary of the Invention

[0009] Based on the shortcomings of the prior art, the purpose of this utility model is to provide an emergency rescue device for the braking system of a wheeled armored vehicle, so as to solve the problems in the prior art where the handbrake cannot be released when the air circuit or electrical circuit fails, and where effective braking force cannot be obtained when the vehicle loses its mobility.

[0010] The technical solution of this utility model is as follows: an emergency rescue device for the braking system of a wheeled armored vehicle, including a three-way valve. The three-way valve is integrated into the main air line between the air compressor and the antifreeze of the wheeled armored vehicle braking system. One end of the valve is connected to the output end of the air compressor, the other end is connected to the input end of the antifreeze, and the third end is provided with an external air source interface. The three-way valve can introduce the gas from the external air source into the brake accumulator and brake cylinder after it has been processed by the antifreeze, so as to bypass the air compressor and directly supply air when there is a fault in the vehicle's air or electrical circuit, thereby releasing the handbrake and providing traction braking force.

[0011] Preferably, the three-way valve is connected to the output end of the air compressor via a flange interface, and the flange interface conforms to the MIL-F-5519 military standard.

[0012] Preferably, the external air source interface adopts a Schrader standard valve (ISO 4570-1), which is compatible with ordinary automobile tire inflation equipment and auxiliary inflation pipes of other wheeled armored vehicles.

[0013] Preferably, it also includes an electric air pump, wherein the rated pressure of the electric air pump is 10±2 bar, the flow rate is ≥25 L / min, and an overpressure protection module is built in.

[0014] Preferably, the electric air pump is connected to the external air source interface of the three-way valve, which can increase the pressure of the brake accumulator to more than 6 bar within 15 minutes, supporting the safe movement of the vehicle to the repair area by soft towing.

[0015] Preferably, the three-way valve does not require adjustment of the vehicle's original air circuit structure after installation, and the air circuit sealing meets the IP67 protection level of military vehicles.

[0016] Preferably, the external air source includes air pumps from other wheeled armored vehicles, mobile high-pressure air cylinders, ordinary tire inflation equipment, or electric air pumps.

[0017] Preferably, a one-way valve is provided in the gas line between the three-way valve and the antifreeze device to prevent gas from flowing back to the external gas source interface.

[0018] Preferably, the air circuit interface of the three-way valve adopts a quick-release clamp structure, which is suitable for tool-free disassembly and assembly in battlefield environments.

[0019] The emergency recovery device for the braking system of the wheeled armored vehicle is suitable for emergency braking recovery and towing operations of wheeled armored vehicles in situations of electromagnetic failure, gas leakage, or low temperature. The operating steps of the device include:

[0020] S1: Connect an external air source to the external air source interface;

[0021] S2: Start the air supply equipment to inflate the brake accumulator until the pressure is ≥6 bar;

[0022] S3: After releasing the handbrake, move the vehicle to a safe area using soft towing.

[0023] The working principle of the braking system of a wheeled armored vehicle equipped with the aforementioned device is as follows:

[0024] 1. During normal driving: When the vehicle is in normal driving, the air compressor continuously produces compressed air and stores it in the air cylinder. The compressed air in the air cylinder maintains the air pressure in the air circuit system within the normal range through components such as the four-pipe protection valve and the combined pressure regulating valve.

[0025] Braking process: When the driver presses the brake pedal, a signal is transmitted to the relay valve, which opens, allowing compressed air from the cylinder to flow into the brake chamber. The pressure inside the brake chamber pushes the brake pads against the brake drum, generating friction that slows the vehicle down or brings it to a stop.

[0026] Parking brake: When the vehicle needs to be parked, the driver pulls up the handbrake pedal, which locks the parking brake through a mechanical device, keeping the brake pads in contact with the brake drum and ensuring that the vehicle will not slip when parked.

[0027] How it works in an emergency: When a vehicle experiences an electrical or pneumatic malfunction, the emergency rescue device (three-way valve) can be connected to an external air source (such as an air pump from another vehicle or an electric air inflator) to inflate the pneumatic system. The inflation interface is identical to that of a standard car tire inflator, facilitating inflation using readily available equipment. After inflation, the vehicle receives sufficient air pressure to release the handbrake and provide braking force.

[0028] The emergency rescue device for the braking system of the wheeled armored vehicle of this utility model has the following beneficial effects:

[0029] 1. Emergency inflation function: When there is a fault in the vehicle's air or electrical circuit, it can quickly inflate the vehicle's brake air circuit through an external air source to solve the problem of the vehicle being unable to release the handbrake.

[0030] High compatibility: The external air source interface adopts Schrader standard valves, which are compatible with ordinary car tire inflation equipment and auxiliary inflation pipes of other wheeled armored vehicles, making it easy to use existing equipment for inflation operations without the need for special equipment.

[0031] Good portability: The device has a simple structure and is installed on the main air line between the vehicle's air compressor and antifreeze. It does not require complex modifications to the vehicle's original system and does not affect the vehicle's technical condition after installation.

[0032] Enhanced rescue capabilities: Provides rapid braking force to vehicles when they are incapacitated, improving the safety and efficiency of the rescue process.

[0033] Wide applicability: Applicable to various wheeled armored vehicles, it can quickly restore the basic mobility of vehicles in battlefield environments, improving the vehicle's battlefield survivability and mission completion rate. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the emergency rescue device of the braking system of the wheeled armored vehicle in the embodiment.

[0035] In the diagram: 1—Air compressor, 2—Three-way valve, 3—Antifreeze, 4—Brake accumulator, 5—Brake cylinder, 6—External air source interface, 7—Electric air pump, 8—One-way valve. Detailed Implementation

[0036] In order to enable those skilled in the art to understand the technical content of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings.

[0037] like Figure 1 As shown, this utility model discloses an emergency rescue device for a wheeled armored vehicle braking system, comprising a wheeled armored vehicle braking system and a three-way valve 2. The three-way valve 2 is integrated into the main air line between the air compressor 1 and the antifreeze 3 of the wheeled armored vehicle braking system. One end of the valve is connected to the output end of the air compressor 1, the other end is connected to the input end of the antifreeze 3, and the third end is provided with an external air source interface 6. The three-way valve 2 can introduce the gas from the external air source into the brake accumulator 4 and the brake cylinder 5 after processing by the antifreeze 3, so as to bypass the air compressor 1 and directly supply air when the vehicle's air or electrical circuit fails, thereby releasing the handbrake and providing traction braking force. Its functional path is: external air source (electric air pump 7) → external air source interface 6 → antifreeze 3 → brake accumulator 4 → brake cylinder 9.

[0038] The specific implementation process also includes the following:

[0039] 1. Installation of three-way valve: Install three-way valve 2 on the main air line between air compressor 1 and antifreeze 3. One end of the three-way valve is connected to the output end of air compressor 1 through a flange interface conforming to military standard MIL-F-5519, the other end is connected to the input end of antifreeze 3, and the third end is equipped with an external air source interface 6.

[0040] Air circuit connection: Ensure a tight air circuit connection between the three-way valve 2 and the air compressor 1 and antifreeze 3, with a sealing performance meeting the IP67 protection level for military vehicles. Install a one-way valve 8 on the air circuit between the three-way valve 2 and the antifreeze 3 to prevent gas backflow to the external air source interface 6.

[0041] External air source interface: External air source interface 6 adopts Schrader standard valve (ISO 4570-1) and is compatible with ordinary automobile tire inflation equipment and auxiliary inflation pipes of other wheeled armored vehicles.

[0042] Electric air pump connection: Connect the electric air pump 7 to the external air source interface 6 of the three-way valve 2. The rated pressure of the electric air pump 7 is 10±2 bar, the flow rate is ≥25 L / min, and it has a built-in overpressure protection module.

[0043] Air circuit interface design: The air circuit interface of the three-way valve 2 adopts a quick-release clamp structure, which is suitable for tool-less disassembly and assembly in battlefield environments.

[0044] Emergency operating procedures:

[0045] S1 connects to an external air source: In case of a malfunction in the vehicle's air or electrical circuit, connect an external air source (such as an air pump from another wheeled armored vehicle, a mobile high-pressure air cylinder, a regular tire inflation device, or an electric air pump) to the external air source interface 6 of the three-way valve 2.

[0046] S2 inflation procedure: Activate the external air supply equipment to inflate brake accumulator 4. The electric air pump can increase the pressure in brake accumulator 4 to over 6 bar within 15 minutes.

[0047] S3 Handbrake Release: When the pressure in the brake accumulator 4 reaches 6 bar or more, the vehicle's handbrake will be automatically released.

[0048] S4 Towing Operation: Moves the vehicle to a safe area or repair site using soft towing. During towing, air pressure provided by an external air source ensures sufficient braking force for the vehicle, improving towing safety.

[0049] Routine use and maintenance

[0050] Routine inspection: Regularly check whether the air circuit connection between the three-way valve 2 and the air compressor 1 and the antifreeze 3 is tight and ensure that there is no leakage.

[0051] Interface maintenance: Keep the external air source interface 6 clean to prevent dust and debris from entering and affecting the connection effect.

[0052] Sealing maintenance: Regularly check the air circuit sealing to ensure it meets the IP67 protection level requirements for military vehicles.

[0053] Check valve inspection: Regularly check the working status of check valve 8 to ensure that it can effectively prevent gas backflow.

[0054] Electric air pump maintenance: Perform regular maintenance on the electric air pump, and check whether its rated pressure, flow rate and overpressure protection module are working properly.

[0055] In summary, the emergency rescue device for the braking system of the wheeled armored vehicle of this utility model is a simple, portable, and practical emergency rescue device that can effectively solve the shortcomings of the existing technology and improve the mobility and rescue efficiency of the wheeled armored vehicle in emergency situations.

[0056] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. An emergency rescue device for the braking system of a wheeled armored vehicle, characterized in that, include: Three-way valve (2), the three-way valve (2) is integrated in the main air line between the air compressor (1) and the antifreeze (3) of the wheeled armored vehicle braking system. One end of the valve is connected to the output end of the air compressor (1), the other end is connected to the input end of the antifreeze (3), and the third end is provided with an external air source interface (6). The three-way valve (2) can introduce gas from an external air source into the brake accumulator (4) and brake cylinder after it has been processed by the antifreeze device (3), so that when the vehicle's air circuit or electrical circuit fails, it can bypass the air compressor (1) to supply air directly, thereby releasing the handbrake and providing traction braking force.

2. The emergency rescue device for the braking system of a wheeled armored vehicle according to claim 1, characterized in that: The three-way valve (2) is connected to the output end of the air compressor (1) via a flange interface.

3. The emergency rescue device for the braking system of a wheeled armored vehicle according to claim 1, characterized in that: The external air source interface (6) adopts a standard valve and is compatible with ordinary automobile tire inflation equipment.

4. The emergency rescue device for the braking system of a wheeled armored vehicle according to claim 1, characterized in that: It also includes an electric air pump with a rated pressure of 10±2 bar, a flow rate of ≥25 L / min, and a built-in overpressure protection module. The electric air pump is connected to the external air source interface (6) of the three-way valve (2) and can raise the pressure of the brake accumulator (4) to its normal working pressure value in a short time, supporting the vehicle to be safely moved to the repair area by soft towing.

5. The emergency rescue device for the braking system of a wheeled armored vehicle according to claim 1, characterized in that: The three-way valve (2) does not require adjustment of the vehicle's original air circuit structure after installation, and the air circuit sealing meets the protection level of military vehicles.

6. The emergency rescue device for the braking system of a wheeled armored vehicle according to claim 1, characterized in that: The external air source includes air pumps from other wheeled armored vehicles, mobile high-pressure air cylinders, ordinary tire inflation equipment, or electric air pumps.

7. The emergency rescue device for the braking system of a wheeled armored vehicle according to claim 1, characterized in that: A one-way valve (8) is provided in the air passage between the three-way valve (2) and the antifreeze device (3) to prevent gas from flowing back to the external gas source interface (6).

8. The emergency rescue device for the braking system of a wheeled armored vehicle according to claim 5, characterized in that: The air circuit interface of the three-way valve (2) adopts a quick-release clamp structure, which is suitable for tool-free disassembly and assembly in battlefield environments.

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