CN-121989901-A - Parking brake isolating device and rail vehicle

CN121989901ACN 121989901 ACN121989901 ACN 121989901ACN-121989901-A

Abstract

The embodiment of the application provides a parking brake isolation device and a railway vehicle, wherein the device comprises a parking control box and a parking monitoring box which are oppositely arranged at two transverse ends below a vehicle body, the parking control box comprises an air supply plug door, a pressure reducing valve, a parking brake electromagnetic valve, a two-way check valve and a first parking isolation plug door, the parking monitoring box comprises a second parking isolation plug door, a first pressure switch and a second pressure switch, the air supply plug door, the pressure reducing valve, the parking brake electromagnetic valve, the two-way check valve, the first pressure switch and the second pressure switch which are connected in parallel are arranged, double monitoring and intelligent judgment on a parking brake state are realized by combining a control main part, the parking monitoring box and the parking control box realize double-side synchronization on the parking brake isolation operation when the vehicle enters a station in the forward and reverse directions, the accuracy of brake state identification and the fault tolerance capability of a system are effectively improved, the problem of misinformation caused by the pressure switch fault in a traditional system is solved, and the safety, stability and maintenance efficiency of train operation are improved.

Inventors

ZHANG YIWEN
JI ZHENSHAN
WANG FANG
HUO QIXIN
FENG XIAOBIN
GAO DONGLIANG
JIN XI
Tian Jijin

Assignees

中车唐山机车车辆有限公司

Dates

Publication Date: 20260508
Application Date: 20260326

Claims (12)

1. The parking brake isolation device is characterized by comprising a parking control box and a parking monitoring box which are oppositely arranged at two transverse ends below a vehicle body respectively; the parking control box comprises an air supply plug door, a pressure reducing valve, a parking brake electromagnetic valve, a two-way check valve and a first parking isolation plug door, wherein the first end of the air supply plug door is connected with a main air cylinder, the second end of the air supply plug door is connected with the first end of the pressure reducing valve, the second end of the pressure reducing valve is connected with the first end of the parking brake electromagnetic valve, the two-way check valve comprises an inlet end, an outlet end and a middle end, the inlet end is connected with the second end of the parking brake electromagnetic valve, the outlet end is connected with a brake cylinder, the middle end is connected with the parking cylinder, and the first end of the first parking isolation plug door is connected with the middle end; The parking monitoring box comprises a second parking isolation plug door, a first pressure switch and a second pressure switch, wherein the first end of the second parking isolation plug door is connected in series with the second end of the first parking isolation plug door, and the first pressure switch is connected in series in a gas path between the two-way check valve and the parking cylinder and is used for detecting the pressure of the gas path; and the control assembly is respectively and electrically connected with the first pressure switch and the second pressure switch, and judges the parking brake executing action according to the first pressure value of the first pressure switch and the second pressure value of the second pressure switch.
2. The parking brake isolation device of claim 1, further comprising a parking isolation operating assembly comprising: the linkage shaft transversely extends along the vehicle body; The first operating mechanism is positioned at one axial end of the linkage shaft and is connected with the first parking isolation plug door to drive the first parking isolation plug door to rotate so as to realize switching; The second operating mechanism is positioned at the other axial end of the linkage shaft and is connected with the second parking isolation plug door to drive the second parking isolation plug door to rotate so as to realize switching; One of the first operating mechanism and the second operating mechanism acts to drive the linkage shaft to rotate and synchronously drive the other one of the first operating mechanism and the second operating mechanism to act to drive the first parking isolation plug door and the second parking isolation plug door to rotate.
3. The parking brake isolation device of claim 2, wherein the first operating mechanism comprises a first swivel arm, a first link, and a first plug door coupler; The first end of the first rotating arm is fixed with the linkage shaft, and the second end of the first rotating arm is in sliding connection with the first end of the first connecting rod; The first plug door coupler comprises a first plug door rotating arm, a first fixed support and a first connecting shaft, wherein the first end of the first plug door rotating arm is connected with the second end of the first connecting rod, and the first rotating arm, the first connecting rod and the first plug door rotating arm form a connecting rod mechanism; The first fixed support is used for being fixed with the parking control box, the first connecting shaft is located on the first fixed support, the first end of the first connecting shaft is fixedly connected with the second end of the first plug door rotating arm, the second end of the first connecting shaft is used for being connected with the plug door shaft of the first parking isolation plug door, and when the first rotating arm rotates, the first plug door rotating arm drives the first connecting shaft to rotate around the axis of the first plug door rotating arm, and then drives the plug door shaft of the first parking isolation plug door to rotate.
4. A parking brake isolation device as claimed in claim 3, wherein the first operating mechanism further comprises a slide bar mechanism comprising: the sliding rod mounting seat is used for being fixed with the parking control box, a group of first sliding limiting columns are arranged on the sliding rod mounting seat, and connecting lines between the first sliding limiting columns are parallel to the first connecting rods; The sliding rod is fixedly connected with the first connecting rod, and is provided with a sliding limit hole and a second sliding limit column, wherein the first sliding limit column is positioned in the sliding limit hole and is in one-to-one correspondence with the first sliding limit column; The first end of the first plug door rotating arm is provided with an opening chute extending along the length direction, and the second sliding limit column is positioned in the opening chute; the first rotating arm drives the first connecting rod and the sliding rod to move along the horizontal direction, the sliding rod moves relative to the first sliding limiting column, and the second sliding limiting column pushes the opening sliding chute and the first plug door rotating arm to rotate.
5. The parking brake isolation device of claim 4, wherein a second end of the first swivel arm is provided with a second slide limiting aperture extending along a length direction of the first swivel arm; a first end of the first connecting rod is provided with a third sliding limit column, and the third sliding limit column is positioned in the second sliding limit hole; The first rotating arm rotates to drive the second sliding limiting hole to rotate and slide relative to the third sliding limiting column, and pushes the third sliding limiting column and the first connecting rod to move along the horizontal direction.
6. The parking brake isolation device of claim 5, further comprising: the first handle is fixedly arranged at the shaft end of the linkage shaft, close to the first operating mechanism and used for driving the linkage shaft to rotate; and/or the second handle is fixedly arranged at the first end shaft end of the connecting shaft and used for driving the connecting shaft to rotate.
7. A parking brake isolation device according to claim 3, wherein the second end of the first plug door swivel arm is provided with a mounting groove having a clamping fastener; The first connecting shaft is arranged in a penetrating mode along the thickness direction of the first fixed support, a positioning installation part is arranged at the first end of the first connecting shaft, the positioning installation part is located in the installation groove and is detachably and fixedly connected with the first plug door rotating arm through the clamping fastener, a slot is formed in the second end of the first connecting shaft, and the slot is used for being inserted into the plug door shaft of the first parking isolation plug door.
8. The parking brake isolation device of claim 6, wherein the first plug door coupler assembly further comprises an expansion sleeve and an expansion sleeve nut, wherein the expansion sleeve and the expansion sleeve nut are sleeved at the second end of the first connecting shaft, the expansion sleeve nut is positioned above the expansion sleeve, and an internal thread of the expansion sleeve nut is matched with an external thread of the first connecting shaft; two sides of the second end of the first connecting shaft are provided with limiting parts oppositely, the outer walls of the two limiting parts are in sliding fit with the inner wall of the expansion sleeve, and the gap between the two limiting parts forms the slot.
9. The parking brake isolation device of claim 8, wherein the first plug door coupler further comprises: The limiting baffle plate is sleeved and fixed at the first end of the first connecting shaft protruding out of the first fixed support, and a limiting groove is formed in the periphery of the limiting baffle plate; The limiting column is fixed on the upper surface of the first fixed support, is positioned in the limiting groove and limits the rotation of the limiting baffle.
10. The parking brake isolation device of claim 2, wherein the second operating mechanism comprises a second swivel arm, a second link, a second plug door coupling, and a gearbox; The gear box comprises a first gear and a second gear shaft, the first gear is positioned at the end part of the linkage shaft, the second gear shaft is meshed with the first gear, the first end of the second rotating arm is fixed with the second gear shaft, and the second end is in sliding connection with the first end of the second connecting rod; The second plug door coupler comprises a second plug door rotating arm, a second fixed support and a second connecting shaft, wherein the first end of the second plug door rotating arm is connected with the second end of the second connecting rod, and the second rotating arm, the second connecting rod and the second plug door rotating arm form a connecting rod mechanism; The second fixed support is used for being fixed with the parking monitoring box, the second connecting shaft is located on the second fixed support, the first end of the second connecting shaft is fixedly connected with the second end of the second stopper rotating arm, the second end of the second connecting shaft is used for being connected with the stopper shaft of the second parking isolation stopper, and when the second rotating arm rotates, the second stopper rotating arm drives the second connecting shaft to rotate around the axis of the second stopper rotating arm, and then drives the stopper shaft of the second parking isolation stopper to rotate.
11. The parking brake isolation device of claim 10, wherein the gearbox comprises a housing, wherein the first gear and the second gear shaft are both located within the housing, wherein the second gear shaft is rotatably connected to the housing, and wherein one end extends to an outer wall of the housing; Further comprises: the third handle is fixedly arranged at the shaft end of the second gear shaft and is used for driving the second linkage shaft to rotate; And/or the fourth handle is fixedly arranged at the first end shaft end of the second connecting shaft and is used for driving the second connecting shaft to rotate.
12. A rail vehicle comprising a parking brake isolation device according to any one of claims 1-11.

Description

Parking brake isolating device and rail vehicle Technical Field The application relates to the technical field of parking brake, in particular to a parking brake isolation device and a railway vehicle. Background Parking brake is used as an important braking mode for preventing a train from slipping in a static state, braking force output is achieved through a spring energy storage type parking brake cylinder, and application and release of the braking force are controlled by means of a parking brake module. The pressure sensor or the pressure switch is arranged in the module to monitor the parking braking state, and meanwhile, whether the module is in the running working condition is judged according to the train speed signal. However, in practical applications, such conventional parking brake control systems suffer from the following disadvantages: the reliability problem of the monitoring component is that the parking brake state depends on the pressure switch to monitor, and once the pressure switch fails (such as clamping stagnation, poor contact and the like), the system misreports, namely, the state that the parking brake is applied or not applied is displayed in error, which not only causes unnecessary alarms, but also can cause the unintended shutdown of the train. The risk of unexpected application during operation and the challenges associated therewith are that emergency braking will be triggered immediately if unexpected application of park brake occurs while the train is in operation. Due to the lack of an effective real-time monitoring means and a detailed fault information feedback mechanism, crews can only manually check the cause of a fault after stopping, and the process is complex and time-consuming, so that the normal operation efficiency and the service quality of a train are seriously affected. Therefore, there is a need for a more reliable and intelligent park brake control system that overcomes the above-described drawbacks, ensures safe and efficient operation of the train, and reduces unnecessary trouble and economic loss due to system failure. Disclosure of Invention The embodiment of the application provides a parking brake isolation device and a railway vehicle, which are implemented to obviously ensure safe and efficient running of a train and reduce unnecessary trouble and economic loss caused by system faults. In order to achieve the above purpose, the present application provides the following technical solutions: a parking brake isolation device comprises a parking control box and a parking monitoring box which are oppositely arranged at two transverse ends below a vehicle body respectively; the parking control box comprises an air supply plug door, a pressure reducing valve, a parking brake electromagnetic valve, a two-way check valve and a first parking isolation plug door, wherein the first end of the air supply plug door is connected with a main air cylinder, the second end of the air supply plug door is connected with the first end of the pressure reducing valve, the second end of the pressure reducing valve is connected with the first end of the parking brake electromagnetic valve, the two-way check valve comprises an inlet end, an outlet end and a middle end, the inlet end is connected with the second end of the parking brake electromagnetic valve, the outlet end is connected with a brake cylinder, the middle end is connected with the parking cylinder, and the first end of the first parking isolation plug door is connected with the middle end; The parking monitoring box comprises a second parking isolation plug door, a first pressure switch and a second pressure switch, wherein the first end of the second parking isolation plug door is connected in series with the second end of the first parking isolation plug door, and the first pressure switch is connected in series in a gas path between the two-way check valve and the parking cylinder and is used for detecting the pressure of the gas path; and the control assembly is respectively and electrically connected with the first pressure switch and the second pressure switch, and judges the parking brake executing action according to the first pressure value of the first pressure switch and the second pressure value of the second pressure switch. Compared with the prior art, the parking brake isolation device and the railway vehicle provided by the embodiment of the application have the following technical effects: The parking brake isolation device is arranged below a vehicle body, does not occupy space in the vehicle, meets the parking brake isolation requirement under the vehicle, combines a control main part to realize dual monitoring and intelligent judgment of a parking brake state by arranging the air supply plug door, the pressure reducing valve, the parking brake electromagnetic valve, the two-way check valve, the first pressure switch and the second pressure switch which are connected in parallel, and simultane