Emergency brake release device of urban rail transit vehicle

Abstract

The utility model provides an emergency brake release device of an urban rail transit vehicle, which is mounted below a passenger compartment seat of the vehicle and comprises a power module, a mode conversion module and a pressure detection module which are all connected with a vehicle circuit. The power module generates hydraulic pressure in the emergency brake release pipeline of the brake clamp, and the pressure requirement for brake release of the clamp on the vehicle is met. The mode conversion module adopts a three-position conversion valve to carry out conversion of three brake release modes; the pressure detection module is used for detecting and measuring hydraulic pressure in an emergency brake release pipeline of a brake clamp on a vehicle and converting a pressure signal into an electric signal for related control. The emergency brake release device of the urban rail transit vehicle has the function of accurately measuring the hydraulic pressure in the emergency brake release pipeline of the brake clamp, participates in control of a vehicle traction safety loop, can ensure that the vehicle can maintain traction, and can also ensure that the vehicle does not have the risk of running with a brake.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle emergency devices, in particular to an emergency brake release device for urban rail transit vehicles. Background Art

[0002] With the continuous development of China's economy, urban rail transit is gradually entering a stage of steady, orderly and rapid development. No system or component on the vehicle can be 100% guaranteed to never fail during the operation of the vehicle. The same is true for the hydraulic brake system of urban rail vehicles. Once the hydraulic brake system fails to release the brake, the vehicle traction safety loop cannot be established, resulting in failure to traction. Improper handling will cause long-term operational delays and cause major adverse social impacts. The main shortcomings of the existing technology when drivers and passengers perform emergency release of the hydraulic brake caliper are as follows:

[0003] First, when the brake clamp is released in an emergency, whether it is to find the on-board manual hydraulic pump, connect the emergency release pipeline, or operate the hydraulic pump, each link takes a long time. Secondly, when the driver and passengers perform emergency release, due to the complex operating procedures and long time-consuming factors, it will cause certain psychological pressure on the driver and passengers. Moreover, when the on-board manual hydraulic pump is used for emergency release, the driver and passengers need to observe the hydraulic gauge reading to confirm the state of the brake clamp, and cannot directly confirm the actual release state of the clamp, which is easy to cause the brake clamp to be not released in place and cause a slight brake situation. During the traction process of the vehicle, the surrounding parts of the brake clamp are damaged by high temperature. The interface between the brake clamp emergency release pipeline and the manual hydraulic pump is designed near the side beam of the bogie frame. When in the station, there are platforms or iron fences on both sides of the bogie, which is very unfavorable for operation due to limited space. Therefore, it is necessary to design a set of emergency release devices to ensure that the driver and passengers can release the brake clamp in the shortest time. Utility Model Content

[0004] The utility model aims to provide an emergency brake release device for urban rail transit vehicles to solve the technical problems in the background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0006] An emergency brake release device for an urban rail transit vehicle is installed under a seat in a passenger compartment of the vehicle. The vehicle emergency brake release device comprises a power module, a mode conversion module and a pressure detection module. The power module, the mode conversion module and the pressure detection module are all connected to the vehicle circuit. The power module generates hydraulic pressure in a brake clamp emergency brake release pipeline to meet the pressure requirement of the brake clamp release on the vehicle. The mode conversion module uses a three-position conversion valve to convert three brake release modes, and the three brake release modes include an electric control brake release mode, a pressure holding mode and a manual brake release mode. The pressure detection module is used to detect and measure the hydraulic pressure in the brake clamp emergency brake release pipeline on the vehicle, and convert the pressure signal into an electrical signal for related control.

[0007] The power module uses a hydraulic motor to generate hydraulic pressure.

[0008] The pressure detection module adopts an electronic pressure switch.

[0009] The mode conversion module also includes a quick connector for connecting a manual oil pump, and a handle is installed on the three-position conversion valve for switching between three release modes.

[0010] Compared with the prior art, the emergency brake release device of an urban rail transit vehicle of the present application adopts an electronic control method, which can effectively save the emergency brake release time of the vehicle and reduce the waiting time of the vehicle to release the brake on the road. At the same time, the present application is simple in design, highly practical, and versatile, and can be used for emergency brake release control with the same working principle. In addition, the emergency brake release device of the present application has the function of accurately measuring the hydraulic pressure in the emergency brake release pipeline of the brake clamp, and participates in the control of the vehicle traction safety loop. On the one hand, it can ensure that the vehicle can maintain traction, and on the other hand, it can also ensure that the vehicle will not have the risk of running with the brake. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 : The structural diagram of this application;

[0012] Figure 2 : The internal electrical circuit structure diagram of this application;

[0013] Figure 3 : Stereoscopic diagram of mode conversion module;

[0014] Figure 4 : This application is connected to the vehicle installation structure block diagram. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0016] Specific embodiment 1: Please refer to Figures 1 to 4 In an embodiment of the utility model, an emergency brake release device for an urban rail transit vehicle is provided. The vehicle emergency brake release device 1 is installed under a seat in a passenger compartment of the vehicle. The vehicle emergency brake release device 1 includes a power module 2, a mode conversion module 3 and a pressure detection module 4. The power module 2, the mode conversion module 3 and the pressure detection module 4 are all connected to a vehicle circuit 5.

[0017] The power module 2 uses a hydraulic motor to generate hydraulic pressure, generating hydraulic pressure in the brake caliper emergency release pipeline to meet the pressure requirement of the brake caliper release on the vehicle;

[0018] The mode conversion module 3 uses a three-position conversion valve to convert three release modes, including an electric control release mode, a pressure holding mode, and a manual release mode; the mode conversion module 3 also includes a quick connector 302 for connecting a manual oil pump, and a handle 301 is installed on the three-position conversion valve for switching the three release modes. The three release modes of this embodiment are as follows:

[0019] In the electronically controlled release mode, the handle 301 is placed in the electronically controlled position. At this time, the oil pump in the device is controlled by the vehicle circuit 5 to operate, and the hydraulic oil passage between the device and the brake clamp emergency release pipeline is opened to release the brake clamp.

[0020] The pressure-holding mode is used to hold the pressure of the brake caliper when the vehicle battery is insufficiently powered or the vehicle is out of power, especially in extreme cases, such as when the brake does not release during vehicle operation, the vehicle charger cannot work, and the battery power is insufficient to ensure that the vehicle can be rescued and towed back to the depot. During the process, the vehicle battery voltage may not meet the working conditions of the emergency release device and the brake may be applied again. When the oil pump fills the brake caliper with oil to release the brake, the handle 301 can be placed in the pressure-holding position to cut off the oil circuit between the brake caliper and the emergency release device to ensure that the brake caliper is in a released state.

[0021] In manual release mode, if the emergency release device fails, place the handle 301 in the manual position. At this time, the brake caliper can still be released by connecting the on-board manual hydraulic pump to the emergency release device interface and injecting oil into the emergency release pipeline to pressurize it. However, after the pressure is applied, the handle 301 needs to be placed in the pressure-maintaining position, and then the manual pump is removed.

[0022] The pressure detection module 4 is used to detect and measure the hydraulic pressure in the brake clamp emergency release pipeline on the vehicle, and convert the pressure signal into an electrical signal for related control. In this embodiment, the pressure detection module 4 adopts an electronic pressure switch. The functions of the pressure detection module 4 include: first, controlling the start and stop of the hydraulic motor on the power module 2. When the hydraulic pressure in the brake clamp emergency release pipeline reaches the brake clamp release setting value, the hydraulic motor is controlled to stop working; when the hydraulic pressure in the brake clamp emergency release pipeline drops to less than the brake clamp release setting value, the hydraulic motor is controlled to start working; second, participating in the vehicle traction safety loop control, when the hydraulic pressure in the brake clamp emergency release pipeline meets the release pressure, the output signal enables the vehicle traction safety loop to be established, and the vehicle can be towed; when the hydraulic pressure in the brake clamp emergency release pipeline does not meet the release pressure, the output signal disconnects the vehicle traction safety loop, and the vehicle cannot be towed; the vehicle network control system collects the emergency release device pressure switch detection signal in real time and displays it in the cab through warning lights, etc.

[0023] In actual use, since there are multiple bogies on the train, the release operation needs to be performed according to the specific fault point. When the brake of the bogie fails and cannot be released normally, the hydraulic brake unit of the corresponding bogie provides the vehicle network DI and is displayed on the IDU display screen in the cab. Through the circuit design between the emergency release device and the vehicle, a conversion switch and a confirmation button can be set in the vehicle's cab to be electrically connected to the vehicle's emergency release device 1, which is used to select and confirm the electric control release mode of the entire vehicle, that is, the conversion switch can select the clamp of the bogie that does not actually release the brake, and then complete the control through the confirmation button, that is, the driver can complete the release control in the cab, without the driver and passengers getting off the vehicle to complete the operation in the car, and even if the electronic control release of the device fails, it can still be achieved through manual release, ensuring the normal operation of the system.

[0024] In addition, instead of using an external conversion switch and confirmation button, the corresponding control button can be directly set on the display interface of the IDU display screen. The vehicle controls the corresponding DO module to output the release command through network communication. The above-described use of an external button mode to switch and confirm the electronic control release will increase a large amount of wiring for the vehicle, while setting the control button directly in the IDU display screen for centralized control can reduce a large amount of wiring. Through the circuit design between the emergency release device and the vehicle, when the brake clamp does not release, the driver and passengers click on the emergency release dialog box on the IDU display screen to enter the interface, select the location where the fault occurs on the IDU display screen and click confirm to complete the emergency release of the brake caliper that does not release. At the same time, data anomalies detected by the pressure detection module 4 can also be displayed on the IDU display screen. The data visualization is high, which is convenient for the driver and passengers to correctly evaluate the vehicle status.

[0025] Compared with the prior art, the emergency brake release device of an urban rail transit vehicle of the present application adopts an electronic control method, which can effectively save the emergency brake release time of the vehicle and reduce the waiting time of the vehicle to release the brake on the road. At the same time, the present application is simple in design, highly practical, and versatile, and can be used for emergency brake release control with the same working principle. In addition, the emergency brake release device of the present application has the function of accurately measuring the hydraulic pressure in the emergency brake release pipeline of the brake clamp, and participates in the control of the vehicle traction safety loop. On the one hand, it can ensure that the vehicle can maintain traction, and on the other hand, it can also ensure that the vehicle will not have the risk of running with the brake.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the foregoing exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An emergency brake release device for an urban rail transit vehicle, characterized in that: The vehicle emergency brake release device is installed under the passenger seat of the vehicle. The vehicle emergency brake release device includes a power module, a mode conversion module and a pressure detection module. The power module, the mode conversion module and the pressure detection module are all connected to the vehicle circuit. The power module generates hydraulic pressure in the brake caliper emergency release pipeline to meet the pressure requirement of the brake caliper on the vehicle; the mode conversion module uses a three-position conversion valve to convert three release modes, and the three release modes include an electric control release mode, a pressure holding mode and a manual release mode; the pressure detection module is used to detect and measure the hydraulic pressure in the brake caliper emergency release pipeline on the vehicle, and convert the pressure signal into an electrical signal for related control.

2. The emergency brake release device for urban rail transit vehicles according to claim 1, characterized in that: The power module uses a hydraulic motor to generate hydraulic pressure.

3. The emergency brake release device for urban rail transit vehicles according to claim 2, characterized in that: The pressure detection module adopts an electronic pressure switch.

4. The emergency brake release device for urban rail transit vehicles according to claim 3, characterized in that: The mode conversion module also includes a quick connector for connecting a manual oil pump, and a handle is installed on the three-position conversion valve for switching between three release modes.

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