Door lock mechanism and railway vehicle
By setting up a drive mechanism and a warning device between the locking tongue and the limit switch, the problem of incomplete closing of the boarding door for EMU drivers has been solved, achieving safe and reliable door closing control and status inspection, and improving the safety of rail vehicles.
Patent Information
- Application Number
- CN202520208757.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-02-10
AI Technical Summary
There is an error in the linkage between the latch and the limit switch of the driver's boarding door on existing high-speed trains, which leads to incomplete door closing, affecting safety and train operation.
A drive mechanism is installed between the latch and the limit switch. The drive mechanism is linked with the limit switch to ensure that the limit switch is triggered after the latch is fully engaged, thereby achieving effective door closing control. An alarm device is also provided to facilitate checking the door status.
It improves the safety performance of the driver's boarding door, ensures that the door closes properly, avoids the problem of blocking the vehicle while driving, has a simple and reliable structure, and is easy to visually inspect the door status.
Smart Images
Figure CN223952456U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a rail vehicle technical field especially a door lock mechanism and rail vehicle. BACKGROUND
[0002] With the development of science and technology, the rail vehicle technology is more and more mature, and more and more passengers choose the motor train unit to travel.
[0003] Generally speaking, the driver's room and passenger car of motor train unit are connected through the driver's boarding door, and the driver's boarding door is required to be closed in the whole process in the driving process to avoid passengers entering the driver's room privately, therefore, it is required to ensure that the door closed by the driver after entering the driver's room can be directly closed in place.
[0004] The driver's boarding door adopts the ordinary door lock structure, the lock tongue is arranged on the door body, the matching lock catch structure is arranged on the door frame, when closing the door, the lock tongue is inserted into the lock catch to make the door body closed and locked.
[0005] Further, on the existing motor train unit, the lock tongue can be connected with the limit switch arranged on the traction mechanism of the door body, the door opening and closing control is realized by the effective contact of the lock tongue and the limit switch.
[0006] In the prior art, the lock tongue directly contacts with the limit switch when closing the door, but due to the limitation of the door body structure and the traction mechanism, the connection between the lock tongue and the limit switch may have errors, which causes the traction locking problem due to the driver's boarding door not being closed in place in the process of using the motor train unit. UTILITY MODEL CONTENTS
[0007] The utility model mainly aims at solving the above problems and deficiencies, and provides a door lock mechanism and rail vehicle, the driving mechanism is arranged between the lock tongue and the limit switch, the lock tongue is connected with the limit switch through the driving mechanism, the effective door closing control is realized, and the safety performance of the driver's boarding door is improved.
[0008] In order to realize the utility model purposes, the utility model firstly provides a door lock mechanism, adopts the following technical scheme:
[0009] A door lock mechanism, including locking mechanism, limit switch and lock stop, wherein:
[0010] The locking mechanism includes a lock tongue, and the lock tongue is extended in the locking state;
[0011] The limit switch is connected with the traction mechanism for controlling the door body opening and closing;
[0012] The lock latch comprises a driver arranged in a shell, and the lock tongue is in contact with one end of the driver in the locked state and pushes the driver to move, so that the driver triggers the limit switch.
[0013] Further, the driver comprises a push rod arranged in the shell, and the lock tongue is in contact with one end of the push rod in the extension process and pushes the push rod to the other end to be in contact with the limit switch.
[0014] Further, the driver further comprises a top shaft, one end of the push rod is inserted into a slot of the top shaft, and the other end of the push rod is correspondingly provided with a through hole for the push rod to enter and exit at the shell; the insertion end of the push rod and the top shaft are arranged in the shell, and the closed end extends out of the shell.
[0015] Further, the driver is provided with a reset device.
[0016] Further, the reset device comprises a first reset spring, a limiting piece is arranged on the cavity of the shell, the first reset spring is sleeved on the push rod, one end of the first reset spring is in contact with the end of the top shaft, and the other end of the first reset spring is in contact with the limiting piece; and a movement gap is left between the end of the push rod and the bottom of the slot.
[0017] Further, the reset device further comprises a second reset spring, a rear end pad is sleeved on the push rod at a distance from the through hole, a limiting step is arranged on the push rod, and the bottom surface of the limiting step is in contact with the cavity side wall of the shell; the second reset spring is sleeved on the push rod, one end of the second reset spring is in contact with the top surface of the limiting step, and the other end of the second reset spring is in contact with the rear end pad.
[0018] Further, the shell comprises a fixed sleeve and a valve body which are assembled into a cylindrical structure, the fixed sleeve is provided with a shaft hole for the top shaft to extend out, and the valve body is provided with a through hole for the push rod to extend out.
[0019] Further, the alarm device for displaying the locked state is further provided.
[0020] Further, a sealing gasket is arranged between the driver and the shell.
[0021] Another object of the present application is to provide a railway vehicle.
[0022] The railway vehicle comprises a door, and the door is provided with the door lock mechanism as described above.
[0023] Compared with the prior art, the door lock mechanism and the railway vehicle have the following technical advantages.
[0024] 1. The driving mechanism is arranged between the lock tongue and the limit switch, only when the lock tongue is completely entered into the driving mechanism, the limit switch can be triggered, the effective door locking action is realized, and the safety performance of the driver boarding door is improved.
[0025] 2. The structure and control principle are simple and reliable.
[0026] 3. The warning device is increased, the driver and passenger can visually check the door state after the door is closed, the possibility that the boarding door is not closed in place is minimized, and the problem that the traction is blocked and the driving is affected is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 The utility model provides a door lock mechanism whole structure schematic diagram;
[0028] Figure 2 The utility model provides a door lock mechanism whole structure main view;
[0029] Figure 3 The utility model provides a door lock mechanism whole structure side view;
[0030] Figure 4 The utility model provides a door lock mechanism whole structure sectional view;
[0031] Figure 5 The utility model provides a door lock mechanism warning device circuit connection principle diagram;
[0032] Wherein, rear valve body 1, inlet and outlet pipe 2, front valve body 3, fixed sleeve 4, rear end pad 5, sealing pad 6, push rod 7, shaft sleeve 8, clamping stop ring 9, second reset spring 10, first reset spring 11, fixed plate 12, pad 13, mounting plate 14, indicating lamp 15, limit switch 16, support plate 17, lock plate 18, lock hole 19.
[0033] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the utility model in any way, but to illustrate the concept of the utility model to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0034] To make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model, and the following embodiments are used to illustrate the utility model, but not to limit the scope of the utility model.
[0035] In the description of the utility model, it needs to explain, the term "upper", "lower", "front", "back", "left", "right", "vertical", "internal", "external" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply the device or element must have a particular orientation, with a particular orientation structure and operation, therefore cannot be understood as the limitation of the utility model.
[0036] In the description of the utility model, it needs to explain, unless otherwise explicitly provided and limited, the term "installation", "connection", "connect" should be broad sense, for example, can be fixed connection, can be detachable connection, or integrally connected, can be mechanical connection, can be electrical connection, can be directly connected, can be indirectly connected through intermediate medium.
[0037] The utility model will be described further in detail below in combination with the drawings and specific embodiments.
[0038] A door lock mechanism, including locking mechanism, limit switch 16 and lock stop, wherein:
[0039] Locking mechanism, including lock tongue, in the locking state, the lock tongue extends out;
[0040] Limit switch 16, with the traction mechanism of control door body switch is connected, control switch door;
[0041] Lock stop, including the drive arranged in the shell, lock tongue in the locking state, with the one end of drive and push drive movement, make drive touch limit switch 16.
[0042] In the embodiment, with the door lock mechanism used on the driver boarding door on the rail vehicle as an example, the specific structure of the door lock mechanism provided by the utility model and the specific process in the use process are introduced.
[0043] As Figures 1 to 5 As shown in the utility model provides a kind of door lock mechanism, including locking mechanism, lock stop and limit switch 16, locking mechanism is fixed with door body, can adopt the structure commonly seen in prior art on boarding door, not required and limit, including lock tongue and lock release mechanism (not shown in the drawing), under the drive of lock release mechanism, lock tongue telescopes, realizes door opening and locking.
[0044] When locking door, lock tongue ( Figures 1 to 4 Not shown in) will be inserted into lock stop, through lock stop, touch limit switch 16 ( Figures 1 to 4The lock catch includes a hollow shell and a driver arranged in the shell cavity. In the embodiment, the shell is divided into three sections, including a fixed sleeve 4, a front valve body 3 and a rear valve body 1 assembled together to form a shell with a hollow structure.
[0045] As shown in the content and orientation of Figure 1 , 2 , the fixed sleeve 4 is located on the left side of the entire shell. In this document, the left side is referred to as the front, and the right side is referred to as the rear. The overall structure is in the form of a cylinder. In the embodiment, the cross-sectional shape of the cylindrical structure is not limited, including but not limited to circular, elliptical, various regular or irregular polygons, as long as the interior forms a cavity that can accommodate the driver.
[0046] The front end of the fixed sleeve 4 (as shown in the orientation of Figure 1 and Figure 4 , the left side is the front, and the right side is the rear) is provided with a shaft hole at the bottom of the cylinder. The inner side wall of the rear part of the cylinder body is cut, so that the cavity diameter of the rear part of the cylinder body is greater than the cavity diameter of the front part of the cylinder body. The front end of the front valve body 3 is inserted into the fixed sleeve 4, so that the front valve body 3 is fixedly connected with the fixed sleeve 4.
[0047] The cavity diameter of the front end of the front valve body 3 is smaller than the inner diameter of the fixed sleeve 4, and a gap is left between the end of the front valve body 3 and the inner wall of the bottom of the fixed sleeve 4. A sealing gasket 6 is arranged at the gap.
[0048] Similarly, the inner wall of the rear end of the front valve body 3 is cut, so that the cavity diameter of the rear end is greater than the cavity diameter of the front end. The front end of the rear valve body 1 is inserted into the rear end of the front valve body 3, so that the rear valve body 1 is fixedly connected with the front valve body 3. A through hole is arranged at the rear end of the front valve body 3.
[0049] As described above, the front valve body 3, the rear valve body 1 and the fixed sleeve 4 are fixedly connected with each other to form a complete shell structure with a hollow structure. The three components can be disassembled. In actual application, the shell can be used as a whole structure, or the front valve body 3 and the rear valve body 1 can be used as a whole structure, and then be fixedly connected with the fixed sleeve 4. In order to facilitate assembly, the shell with the whole structure can be divided into an upper part and a lower part according to the center line.
[0050] In order to ensure the fastening of the shell, fixed plates 12 are arranged at the connection between the rear valve body 1 and the front valve body 3, respectively. After the rear valve body 1 and the front valve body 3 are fixedly connected, the two fixed plates 12 are attached together, and then are fastened together by bolts.
[0051] The driver is arranged in the cavity of the shell. In the embodiment, the driver includes a top shaft and a push rod 7 assembled together. The top shaft is fixedly connected with the fixed sleeve 4. The left side (as shown in the orientation of Figure 4 , the front end) of the top shaft penetrates through the shaft hole of the bottom of the fixed sleeve 4 and then penetrates out of the fixed sleeve 4, and is used to actuate a limit switch 16.
[0052] The main structure of the top shaft has a slot. The front end of the push rod 7 is inserted into the slot, connecting the push rod 7 to the top shaft. A clearance is left between the end of the push rod 7 and the bottom of the slot. A rear end washer 5 is fitted at the rear end of the push rod 7 to prevent it from coming out of the through hole. A clearance is also left between the rear end washer 5 and the end of the rear valve body 1 (the side wall where the through hole is located). The insertion end of the top shaft and the push rod 7 is located inside the housing. The closed end of the top shaft (at the bottom of the slot) passes through the housing and extends outside.
[0053] In practical applications, it may be inconvenient to use a top shaft, allowing the locking tongue to directly contact the push rod 7. The push rod 7 can be modified accordingly. The above description should not be regarded as a limitation of this application.
[0054] A reset device is provided on the push rod 7 and / or the top shaft, allowing the driver to reset itself. In this embodiment, the reset device is a reset spring, fitted onto the push rod 7 and / or the top shaft. Specifically:
[0055] The reset spring is mounted on the driver, with one end abutting against the rear end pad 5 of the push rod 7 and the other end abutting against the top of the side wall of the fixed sleeve 4.
[0056] Or, such as Figure 4 As shown, the reset spring includes a first reset spring 11 and a second reset spring 10. The front end of the first reset spring 11 is fitted with a limit member integrally formed on the cavity wall of the rear end of the front valve body 3. The top surface of the limit member protrudes from the inner wall of the main body of the front valve body 3. One end of the first reset spring 11 abuts against the top of the side wall of the fixed sleeve 4, and the other end abuts against the side wall of the limit member. A limit step is provided at the connection between the push rod 7 and the front valve body 3 and the rear valve body 1. The large diameter end of the limit step abuts against the other side wall of the limit member, and a sealing gasket 6 is provided at the abutment. One end of the second reset spring 10 abuts against the small diameter end of the limit step.
[0057] When the door is closed, the latch extends and abuts against the bottom of the top shaft, pushing the top shaft to move to the right along the push rod 7. The top shaft compresses the first return spring 11. After the top shaft has moved to the right and completed the movement gap between the push rod 7 and the bottom of the top shaft groove, the bottom of the groove abuts against the front of the push rod 7, causing the push rod 7 to move to the right synchronously. The second return spring 10 is compressed, and the push rod 7 causes the rear end pad 5 to move to the right synchronously until it abuts against the side wall of the rear valve body 1. The rear end of the push rod 7 ( Figure 4 The right end of the door extends out of the through hole; when the door is opened, the latch retracts, and under the action of the reverse reset force of the two reset springs, the top shaft and push rod 7 automatically move to the left, thereby resetting.
[0058] After the door is closed, the lock tongue output keeps a force F1 = 55N, the lock tongue compression driver, i.e. the lock tongue compression top shaft, the push rod 7, compresses the reset spring, so that the reset spring generates a rebound force F2 = 35N. According to the selected type parameters of the limit switch 16, the limit switch 16 keeps triggering at a force F3 of 8.5N. Therefore, after the door is closed, F2+F3 = 35N+8.5N = 43.5N < F1 = 55N, and the force of the lock tongue triggering the limit switch 16 has a margin of 11.5N, which can ensure that the limit switch 16 can be triggered reliably.
[0059] Preferably, a lock baffle is further arranged at the rear side of the rear valve body 1, and a lock hole 19 is arranged on the lock baffle. In a normal state, the rear end of the push rod 7 is located in the lock hole 19 or the gap between the lock baffle and the side wall of the rear valve body 1, and is pressed by the lock tongue and extends out of the lock hole 19 and abuts against the limit switch 16 arranged at the rear side of the lock hole 19, so as to trigger the limit switch 16. The limit switch 16 is electrically connected with the traction mechanism on the door.
[0060] Further, the door lock mechanism further comprises a warning device for prompting whether the door body is closed. The warning device can be an indicator light 15 arranged at the driver's door for prompting whether the door body is closed. Preferably, a green indicator light 15 is arranged on the upper cover plate of the driver's door to display the closing state of the single door, which is convenient for checking and confirming.
[0061] As shown in Figure 5 , the indicator light 15 is connected with the circuit of the limit switch 16, the traction mechanism and the HMI screen state display, and signals are homologous, and the same contact is adopted for control, so as to ensure that the indicator light 15 is consistent with the HMI screen. In the embodiment, the circuit connection of the limit switch 16, the indicator light 15, the door traction mechanism and the HMI screen is as shown in Figure 5 . In actual application, the specific connection mode of the limit switch 16 and the indicator light 15 can be adjusted according to the circuit setting of the vehicle.
[0062] In order to improve the intuitiveness of visual inspection of the door state at the door, the warning device further comprises a warning sticker coated on the lock tongue. Only when the warning sticker is inserted into the shaft hole can the push rod 7 effectively trigger the limit switch 16 to realize door locking, but the driver or passenger can visually check the door state after closing the door.
[0063] In order to avoid hard contact between the push rod 7 and the fixed sleeve 4 during movement, and to avoid foreign matter entering the inside of the shell, elastic sealing pads 6 are arranged between the front valve body 3 and the fixed sleeve 4, between the limiting step and the front valve body 3, and between the rear valve body 1, so as to realize soft contact during movement of the push rod 7, avoid noise and damage caused by hard contact.
[0064] The lock stop further comprises a pneumatic device, including an air inlet pipe and an air outlet pipe.
[0065] Further, the lock stop mechanism further comprises a mounting plate 14, the shell and the mounting plate 14 are assembled and fixed through bolts, the lock stop plate is fixed at the rear end of the mounting plate 14, at the front end of the mounting plate 14, a support plate 17 perpendicular to the mounting plate 14 is integrally formed, the top of the support plate 17 is provided with an arc-shaped groove, after the top shaft extends out of the shell, the top shaft is embedded into the arc-shaped groove and is supported by the support plate 17.
[0066] The utility model further provides a kind of railway vehicle, including door, door is provided with the door lock mechanism described above.
[0067] It should be noted that the limit switch 16 and the traction mechanism are conventional structures of the railway vehicle, and any achievable technology content can be used, and this paper will not be described.
[0068] In summary, compared with the prior art, the door lock mechanism and the railway vehicle have the following technical advantages:
[0069] 1, by setting the driving mechanism between the lock tongue and the limit switch, only when the lock tongue completely enters the driving mechanism, the limit switch can be triggered, effective door locking action is realized, and the safety performance of the driver boarding door is improved;
[0070] 2, simple structure and control principle, reliable;
[0071] 3, by increasing warning device, it is convenient for driver and passenger to visually check the door state after closing the door, to maximize the possibility of boarding door closed, to avoid the problem of affecting driving caused by blocking traction.
[0072] As described above, in combination with the given solution content, similar technical solutions can be derived. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, as long as it does not deviate from the content of the technical solution of the present application, still belongs to the scope of the technical solution of the present application.
Claims
1. A door locking mechanism, characterised in that: The door lock mechanism comprises a locking mechanism, a limit switch and a lock stopper, wherein, The locking mechanism comprises a locking tongue, which extends out in the locking state; The limit switch is connected with a traction mechanism for controlling the door switch, and controls the switch door; The lock stopper comprises a driver arranged in the shell, and the locking tongue in the locking state abuts against one end of the driver and pushes the driver to move, so that the driver triggers the limit switch.
2. A door latch mechanism as claimed in claim 1, characterised in that: The driver comprises a push rod arranged in the shell, and the locking tongue abuts against one end of the push rod in the extending process and pushes the push rod to abut against the limit switch at the other end.
3. A door latch mechanism as claimed in claim 2, characterised in that: The driver further comprises a top shaft, which is provided with a slot, one end of the push rod is inserted into the slot, and the other end of the push rod is provided with a through hole for the push rod to enter and exit at the corresponding position of the shell; the insertion end of the top shaft and the push rod is arranged in the shell, and the closed end extends out of the shell.
4. A door latch mechanism as claimed in claim 3, wherein: The driver is provided with a reset device.
5. A door latch mechanism as claimed in claim 4, wherein: The reset device comprises a first reset spring, a limiting piece is arranged on the cavity of the shell, the push rod is sleeved with the first reset spring, one end of the first reset spring abuts against the end of the top shaft, and the other end abuts against the limiting piece; a movement gap is left between the end of the push rod and the slot bottom of the slot.
6. A door latch mechanism as claimed in claim 5, wherein: The reset device further comprises a second reset spring, a rear end pad is sleeved on the push rod at a distance from the through hole, a limiting step is arranged on the push rod, and the bottom surface of the limiting step abuts against the side wall of the cavity of the shell; the push rod is sleeved with the second reset spring, one end of the second reset spring abuts against the top surface of the limiting step, and the other end abuts against the rear end pad.
7. A door latch mechanism as claimed in claim 3, wherein: The shell comprises a fixed sleeve and a valve body assembled into a cylindrical structure, the fixed sleeve is provided with a shaft hole for the top shaft to extend out, and the valve body is provided with a through hole for the push rod to extend out.
8. A door lock mechanism as claimed in any one of claims 1 to 7, characterized in that: The alarm device for displaying the locking state is further provided.
9. A door lock mechanism as claimed in any one of claims 1 to 7, characterized in that: A sealing gasket is arranged between the driver and the shell.
10. A rail vehicle characterized by: The door lock mechanism comprises a door, and the door is provided with the door lock mechanism according to any one of claims 1 to 9.