Sliding plug door locking device

Abstract

The utility model relates to the technical field of rail transit vehicles, in particular to a sliding plug door locking device, which mainly structurally comprises a driving mechanism, a locking mechanism, an auxiliary locking mechanism, an electromagnetic valve and a filter component, the driving mechanism and the locking mechanism are arranged at the top of a sliding plug door, and the auxiliary locking mechanism, the electromagnetic valve and the filter component are arranged on the side edge of the sliding plug door. When no air pressure effect exists, the lock is in a locking state, and when ventilation is conducted, unlocking is conducted; the electromagnetic valve is used for controlling switching of air channels, when the door is closed for locking, the electromagnetic valve is powered off, an air cylinder of the auxiliary locking mechanism is ventilated, meanwhile, air of the clutch is cut off, synchronous locking is achieved, when the door is opened for unlocking, the electromagnetic valve is powered on, the clutch is ventilated, air of the air cylinder of the auxiliary locking mechanism is cut off, and synchronous unlocking is achieved. The linkage locking device is simple in structure, synchronous locking and unlocking of the locking mechanism and the auxiliary locking mechanism can be controlled at the same time through the single electromagnetic valve, the automobile door can still be in the locking state when the electromagnetic valve is powered off, and linkage locking of the locking mechanism and the auxiliary locking mechanism is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of rail transit vehicle, concretely relates to a locking device of sliding plug door and is applied to the door system of various rail vehicles. BACKGROUND

[0002] With the development of rail transit and the increasing passenger flow of rail vehicles, the requirements for the locking device of sliding plug doors of high-speed trains are becoming more and more stringent. The locking device can effectively prevent the train doors from being accidentally opened during train running, avoid passengers falling off, and ensure passenger safety; when the sliding plug door is closed, it can also quickly lock the train door to prevent passengers from mistakenly opening the door in a dangerous state, further ensuring safety. The reliability of the existing sliding plug door locking device is not high, and accidental opening often occurs. For example, a sliding plug door locking mechanism disclosed in Chinese Patent 202320074078.2 includes a support seat, an unlocking swing lever, a left swing lever, and a locking bearing. The support seat has a shaft hole, and the opposite sides of the support seat correspond to the shaft hole and are provided with annular protrusions. The unlocking swing lever is fixedly connected with a rotating shaft that is rotatably arranged in the two protrusions. One end of the unlocking swing lever is provided with a connecting hole one. The left swing lever is rotatably supported on the support seat. The left swing lever is provided with a long strip-shaped connecting hole two. The locking bearing is installed in the connecting hole one and slidably passes through the connecting hole two. The support seat is fixedly connected with a left swing lever support shaft. The left swing lever is fixedly connected with a sleeve two that is rotatably arranged on the left swing lever support shaft. The left swing lever support shaft passes through the sleeve two and the left swing lever. The end of the rotating shaft away from the unlocking swing lever or the end of the left swing lever support shaft away from the support seat is provided with a limiting assembly. The limiting assembly includes a stop plate that is arranged on the protrusion or the left swing lever. The stop plate is provided with a fixing screw that is threadedly connected with the rotating shaft or the left swing lever support shaft. The limiting assembly further includes a positioning column. One end of the positioning column passes through the stop plate, and the other end of the positioning column passes through the rotating shaft or the left swing lever support shaft. The rotating shaft is provided with an anti-friction pad that is arranged between the protrusion and the unlocking swing lever. The left swing lever support shaft is provided with an anti-friction pad that is arranged between the sleeve two and the support seat. Two bushings are respectively arranged in the two protrusions. A gap is arranged between the two bushings. The rotating shaft rotatably passes through the two protrusions. The support seat is provided with an oil nozzle that is in communication with the gap. The sleeve two is provided with two bushings. A gap is arranged between the two bushings. An oil injection channel is axially arranged in the left swing lever support shaft. An oil outlet hole is radially arranged in the left swing lever support shaft. One end of the oil outlet hole is in communication with the oil injection channel, and the other end of the oil outlet hole is in communication with the gap. The side of the support seat away from the left swing lever support shaft is provided with an oil nozzle that is in communication with the oil injection channel. The side of the unlocking swing lever close to the support seat is further provided with a countersunk groove that accommodates a nut for fixing the locking bearing. The countersunk groove is in position correspondence with the connecting hole one. The electric sliding plug door locking mechanism disclosed in Chinese Patent 202010027647.9 includes a locking mechanism body. One side of the locking mechanism body is provided with a fixed connecting seat. The top and bottom of the fixed connecting seat are fixedly installed with trapezoidal connecting blocks. One side of the locking mechanism body is provided with a mounting fixed seat. The mounting fixed seat is provided with a connecting cavity. The mounting fixed seat is provided with a connecting hole close to the locking mechanism body. The connecting hole and the connecting cavity are in communication. The connecting cavity is provided with two trapezoidal stop blocks. The two trapezoidal stop blocks and the corresponding trapezoidal connecting blocks are matched. The connecting cavity is provided with two rectangular fixed blocks on the inner wall away from the locking mechanism body.One end of the fixed shaft is fixedly installed on one side of the rectangular fixed block, the other end of the fixed shaft is fixedly installed on the inner wall of the connecting cavity, the rectangular slide block is slidably installed on the fixed shaft, the trapezoidal extrusion block is fixedly installed on one side of the rectangular slide block close to the locking mechanism body, the trapezoidal stop block is fixedly installed on one side of the corresponding trapezoidal extrusion block, one end of the first spring is fixedly installed on the sides of the two rectangular slide blocks away from each other, the other end of the first spring is fixedly installed on the inner wall of the connecting cavity, the sliding fixed block is fixedly installed on the sides of the two trapezoidal extrusion blocks away from each other, the pin shaft is slidably installed on the sliding fixed block, one end of the pin shaft is in sliding contact with the inner wall of the connecting cavity, the rectangular stop block is fixedly installed on the other end of the pin shaft, the pin shaft is fixedly sleeved with the spring fixed block, one end of the second spring is fixedly installed on one side of the spring fixed block, the other end of the second spring is fixedly installed on the corresponding sliding fixed block, two extrusion pin holes are formed in the side of the mounting fixed seat close to the locking mechanism body, the extrusion pin holes are communicated with the connecting cavity, and the pin shaft is matched with the corresponding extrusion pin hole. A locking and unlocking device for a sliding plug door is disclosed in Chinese Patent No. 201820839421.7, which comprises a driving mechanism, a locking and unlocking mechanism, and a bottom plate for providing a mounting surface. The driving mechanism is arranged in the middle position, and the locking and unlocking mechanism is symmetrically arranged on both sides of the driving mechanism. One end of the locking and unlocking mechanism is connected with the driving mechanism, and the other end is connected with the rotating column of the left or right door leaf. When the door is closed, the driving mechanism and the locking and unlocking mechanism act on each other, so that the door body reaches the closed position, and under the action of the driving mechanism, the locking and unlocking mechanism enters the locking area and makes the door in the locked state. When the door is opened, the driving mechanism and the locking and unlocking mechanism act on each other, so that the locking and unlocking mechanism leaves the locking area, and the door is in the unlocked state. The locking and unlocking mechanism comprises two symmetrical locking and unlocking assemblies arranged between the rotating column of the left or right door leaf and the bottom plate, and two unlocking pull rods symmetrically connected with the driving mechanism and acting on the locking and unlocking assemblies to switch the locking and unlocking assemblies between the locked state and the unlocked state. The driving mechanism comprises a driving motor for simultaneously driving the opening and closing of the sliding plug door. When the rotor of the driving motor cannot rotate due to resistance, the stator of the driving motor can rotate in the opposite direction. The stator of the driving motor is connected with the locking and unlocking mechanism and can act on the locking and unlocking mechanism to move. A swing disc is arranged on the stator of the driving motor and rotates with the stator. One end of the unlocking pull rod is connected with the swing disc to act on the driving motor. The locking and unlocking assembly comprises a locking lever, an unlocking swing lever, and a guide arm. The fixed end of the locking lever is hingedly fixed to the bottom plate through a hinge shaft. A connecting shaft is arranged on the free end of the locking lever. The locking lever is rotatably connected with the other end of the unlocking pull rod through the connecting shaft and rotatably connected with one end of the unlocking swing lever. The free end of the guide arm is rotatably connected with the other end of the unlocking swing lever. The fixed end of the guide arm is connected with the rotating column and can rotate relative to the rotating column.The locking and unlocking assembly further comprises a guide wheel arranged on the guide arm and running along a track, the guide wheel sliding in a door slot arranged on the door body, and the locking and unlocking assembly further comprises a limiting piece for limiting the counterclockwise rotation of the swing plate when the locking and unlocking assembly enters the locking position, the limiting piece being arranged on a motor support for mounting the driving motor, the locking and unlocking mechanism comprising a tension spring, one end of the tension spring being connected with the connecting shaft, and the other end being fixed on the bottom plate, the tension spring being capable of stopping or keeping the locking and unlocking assembly in the locking area position, the end of the unlocking pull rod being provided with an arc-shaped hooking end, the hooking end being connected with the swing plate, the locking and unlocking mechanism comprising a U-shaped frame-shaped fixed end and a connecting plate arranged on the free end and integrated with the fixed end, the U-shaped fixed end being inserted with the bottom plate and being rotatably connected with the bottom plate through a hinge shaft, the connecting shaft being rotatably arranged on the connecting plate, the connecting plate being rotatably connected with the unlocking pull rod and the unlocking swing rod through the connecting shaft, a spring plate being arranged between the tension spring and the bottom plate, the spring plate being a Z-shaped plate, one horizontal section of the spring plate being connected with the bottom plate, and the other horizontal section of the spring plate being connected with the tension spring, the unlocking device further comprising a hand unlocking mechanism connected with and acting on the driving mechanism, the hand unlocking mechanism being used for manually making the sliding plug door from the locking state to the unlocking state, the hand unlocking mechanism comprising a hand unlocking pull rod, a hand unlocking swing rod and an unlocking rope, one end of the hand unlocking pull rod being connected with the swing plate outside the stator of the driving motor and interacting with the driving motor, the other end of the hand unlocking pull rod being connected with the hand unlocking swing rod, the hand unlocking swing rod being swingably arranged on a swing rod support, the unlocking rope and the other end of the hand unlocking pull rod being respectively connected with the hand unlocking swing rod from both sides, the swing rod support being fixed on the bottom plate, a rotating shaft being arranged on the swing rod support, the hand unlocking swing rod being rotatably fixed on the swing rod support through the rotating shaft, the hand unlocking swing rod comprising an upwardly extending swing rod and a trigger rod integrated with the swing rod, the upper end of the swing rod being provided with a notch groove for the unlocking rope to pass through, and the hand unlocking pull rod being connected with the upper end of the swing rod, the hand unlocking mechanism further comprising a rope passing frame arranged on the side of the hand unlocking swing rod opposite to the hand unlocking pull rod, a rope passing pipe being arranged on the upper end of the rope passing frame, the unlocking rope being connected with an inner unlocking switch arranged in the carriage and / or an outer unlocking switch arranged outside the carriage in sequence through the hand unlocking swing rod and the rope passing pipe, the hand unlocking mechanism further comprising a rope passing frame arranged on the side of the hand unlocking swing rod opposite to the hand unlocking pull rod, a rope passing pipe being arranged on the upper end of the rope passing frame, the unlocking rope being connected with an inner unlocking switch arranged in the carriage and / or an outer unlocking switch arranged outside the carriage in sequence through the hand unlocking swing rod and the rope passing pipe, a transverse limiting column being arranged on one side wall of the swing rod support, an elastic element being arranged on the rotating shaft, the hand unlocking swing rod being kept against the limiting column when not subjected to tension and the locking and unlocking mechanism being kept in the locking state, a thrust copper pad being arranged on the end face of the swing plate for triggering a lock-in-place switch when the swing plate rotates to the locking position, so as to control the driving motor to stop, the lock-in-place switch being arranged on the outer periphery of the swing plate through a switch frame arranged on the motor support and acting on the thrust copper pad, the swing plate having two connecting ears at positions symmetrical to 180°,The connecting ear is provided with a rotatable swing disc connecting shaft, and the hand release pull rod and the unlocking pull rod are rotatably connected with the swing disc through the swing disc connecting shaft. Therefore, an emergency door lock device is urgently needed to be developed and designed to ensure passenger safety, driving safety, system reliability and riding comfort. SUMMARY

[0003] The utility model discloses a kind of emergency door lock devices, to overcome the shortcomings in prior art, reduce the occurrence of accidental opening and closing door failure, enhance the trust of passenger to train safety, enhance the comfort and satisfaction of passenger.

[0004] To achieve the above object, the main body structure of the emergency door lock device of the utility model includes the driving mechanism and the locking mechanism arranged at the top of the sliding plug door, the auxiliary locking mechanism, the electromagnetic valve and the filter assembly arranged at the side edge;

[0005] The main body structure of the locking mechanism includes the clutch bracket, the fixed plate, the connecting plate and the switch arranged on the fixed seat, the clutch arranged in the clutch bracket, the rotator disc is installed on the rotor disc of clutch, and the one-way bearing is arranged between the two, and the blocking ring is assembled, the unlocking pressure plate is connected with the fixed plate and the connecting plate respectively, the steel wire rope unlocking assembly and the reset spring are arranged on the unlocking pressure plate;

[0006] The main body structure of the auxiliary locking mechanism includes the cylinder and the linkage compression assembly connected with each other.

[0007] The driving mechanism of the utility model includes motor, and the main function is to realize the opening and closing action of sliding plug door;

[0008] The locking mechanism brakes the sliding plug door;

[0009] The clutch bracket is in contact with the unlocking pressure plate, and the unlocking pressure plate is arranged between the fixed plate and the connecting plate through the shaft sleeve;

[0010] The clutch is a normally closed pneumatic clutch, and the stator disc is engaged with the rotor disc, and separated by air pressure action;

[0011] The one-way bearing can rotate in one direction relative to the rotor disc of the clutch, and does not affect the normal closing action in the locking state;

[0012] The auxiliary locking mechanism is arranged at the inner side of the two door leaves, and when there is air pressure, the door leaves are pressed to each other to realize locking, and when there is no air pressure, the reset spring is reset under the action of the reset spring;

[0013] When the cylinder is ventilated, the linkage compression assembly is actuated, so that the door leaf is pressed to be locked;

[0014] The electromagnetic valve is a two-position three-way electromagnetic valve, the air inlet is connected with the filter assembly, two air outlets are connected with the locking mechanism and the auxiliary locking mechanism respectively, and air path switching is carried out.

[0015] The air inlet of the filter assembly is connected with an external air source device, and the air outlet is connected with the electromagnetic valve, and the filter assembly has the functions of gas filtering and controlling the opening and closing of the gas path.

[0016] Compared with the prior art, the locking mechanism adopts a normally closed pneumatic clutch, and is in a locking state when there is no air pressure, and is unlocked when air is supplied; the switching of the air path is controlled through the electromagnetic valve, when the door is closed to be locked, the electromagnetic valve loses power, so that the air cylinder of the auxiliary locking mechanism is ventilated, at the same time, the clutch is disconnected, synchronous locking is realized, when the door is opened to be unlocked, the electromagnetic valve is powered, the clutch is ventilated, at the same time, the air cylinder of the auxiliary locking mechanism is disconnected, synchronous unlocking is realized; the structure is simple, synchronous locking and unlocking of the locking mechanism and the auxiliary locking mechanism can be controlled through a single electromagnetic valve, the vehicle door can still be in a locked state when the electromagnetic valve loses power, linkage locking of the locking mechanism and the auxiliary locking mechanism is realized, the main structure of the vehicle door system is simplified, the safety of the vehicle door system is improved, and the application prospect is potential. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the main structure of the utility model.

[0018] Figure 2 It is a schematic view of the main structure principle of the locking mechanism involved in the utility model.

[0019] Figure 3 It is a schematic view of the main structure principle of the auxiliary locking mechanism involved in the utility model.

[0020] Figure 4 It is a schematic view of the power-on state of the electromagnetic valve involved in the utility model.

[0021] Figure 5 It is a schematic view of the power-off state of the electromagnetic valve involved in the utility model.

[0022] Figure 6 It is a schematic view of the operation principle of the utility model. DETAILED DESCRIPTION

[0023] The utility model will be further described in combination with the specific embodiments and the accompanying drawings.

[0024] Embodiment 1

[0025] The main structure of the locking device of the sliding plug door involved in this embodiment is as shown in Figure 1As shown, including drive mechanism 1, locking mechanism 2, auxiliary locking mechanism 3, solenoid valve 4 and filter assembly 5; The top of the plug door is provided with drive mechanism 1 and locking mechanism 2, the right side is provided with auxiliary locking mechanism 3 and solenoid valve 4, and the left side is provided with auxiliary locking mechanism 3 and filter assembly 5;

[0026] As shown in the main body structure of locking mechanism 2, Figure 2 As shown, including fixed seat 201, clutch bracket 202, fixed plate 203, connecting plate 204, switch 205, clutch 206, rotating disc 207, one-way bearing 208, retaining ring 209, unlocking pressure plate 210, steel wire rope unlocking assembly 211 and reset spring 212; The fixed seat 201 of the U-shaped frame structure is provided with the clutch bracket 202, the top is provided with the fixed plate 203, the bottom is provided with the connecting plate 204, the lower part is provided with the switch 205, the clutch bracket 202 is provided with the clutch 206, the rotor disc of the clutch 206 is installed with the rotating disc 207, and the one-way bearing 208 is arranged between the two, which is assembled through the retaining ring 209, the unlocking pressure plate 210 is connected with the fixed plate 203 and the connecting plate 204 through the shaft sleeve, the unlocking pressure plate 210 is provided with the steel wire rope unlocking assembly 211, and the bottom is provided with the reset spring 212;

[0027] As shown in the main body structure of auxiliary locking mechanism 3, Figure 3 As shown, including air cylinder 301 and linkage compression assembly 302, air cylinder 301 is on the top, linkage compression assembly 302 is on the bottom, and the two are connected with each other.

[0028] The solenoid valve 4 in this embodiment is connected with the clutch 206 of the locking mechanism 2 when it is powered, as shown in Figure 4 ;

[0029] The solenoid valve 4 is connected with the air cylinder 301 of the auxiliary locking mechanism 3 when it is powered off, as shown in Figure 5 .

[0030] The operation principle of the plug door locking device related in this embodiment is shown in Figure 6 ,

[0031] When unlocking, the solenoid valve 4 is powered, the air pressure provided by the air cylinder 301 is connected to the locking mechanism 2 to unlock the clutch 206, at the same time, the auxiliary locking mechanism 3 has no air pressure effect and is in the unlocking state;

[0032] When locking, the solenoid valve 4 is powered off, the air pressure provided by the air cylinder 301 is connected to the auxiliary locking mechanism 3, so that the linkage compression assembly 302 is compressed to lock the door plate, at the same time, the locking mechanism 2 has no air pressure effect, so that the clutch 206 is in the normally closed state, and the plug door is locked;

[0033] When manually unlocking, pulling the steel wire rope unlocking assembly 211 makes the unlocking pressing plate 210 rotate, thereby pressing the clutch support 202 to make the stator disc and the rotor disc of the clutch 206 separate from each other;

[0034] Loosen the steel wire rope unlocking assembly 211, and the unlocking pressing plate 210 is reset under the action of the reset spring 212.

Claims

1. A locking device for a sliding plug door, characterized in that The main body structure comprises a driving mechanism and a locking mechanism arranged at the top of the sliding door, an auxiliary locking mechanism, an electromagnetic valve and a filter assembly arranged at the side edge; wherein the main body structure of the locking mechanism comprises a clutch bracket, a fixed plate, a connecting plate and a switch arranged on the fixed seat.

2. The locking device of a sliding plug door according to claim 1, wherein A clutch is arranged in the clutch bracket, a rotating disc is arranged on the rotor disc of the clutch, a one-way bearing is arranged between the two, the unlocking pressure plate is connected with the fixed plate and the connecting plate through blocking ring assembly, a steel wire rope unlocking assembly and a reset spring are arranged on the unlocking pressure plate.

3. The locking device of a sliding plug door according to claim 2, wherein The main body structure of the auxiliary locking mechanism comprises a cylinder and a linkage compression assembly connected with each other.

4. The locking device of a sliding door according to any one of claims 1 to 3, characterized in that, The driving mechanism comprises a motor.

5. The locking device of a sliding plug door according to claim 4, wherein The clutch bracket is in contact with the unlocking pressure plate, the unlocking pressure plate is arranged between the fixed plate and the connecting plate through a shaft sleeve, the clutch is a normally closed pneumatic clutch, the stator disc is engaged with the rotor disc, and the one-way bearing rotates in one direction relative to the rotor disc of the clutch.

6. The locking device of a sliding plug door according to claim 5, wherein The auxiliary locking mechanism is arranged at the inner side of the two door leaves.

7. The locking device of a sliding plug door according to claim 6, wherein The electromagnetic valve is a two-position three-way electromagnetic valve, the air inlet is connected with the filter assembly, and the two air outlets are connected with the locking mechanism and the auxiliary locking mechanism respectively.

8. The locking device of a sliding plug door according to claim 7, wherein The air inlet of the filter assembly is connected with an external air source device, and the air outlet is connected with the electromagnetic valve.

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