A crew room sliding door limiting mechanism

Abstract

The utility model relates to the technical field of rail transit sliding door, especially to a crew room sliding door limiting mechanism; the resetter fixed support is arranged at the top of the door leaf, and the door leaf moves to the interior of the partition wall through the cooperation of the lower guide rail after being opened by the conventional unlocking mechanism; the resetter is arranged at the top in the partition wall and pulls the door leaf in cooperation with the resetter fixed support; the limiting mechanism comprises a gravity lock block and a torsion spring; the limiting pin shaft is lifted to lift the gravity lock block with the door leaf opening movement, and the gravity lock block is clamped to the limiting pin shaft through the torsion spring to complete the self-locking after the door leaf opening and the opening after the self-locking of the door leaf by lifting the gravity lock block, reaches the effect that the crew room sliding door is automatically reset to the fully open state after the key is opened, can completely eliminate the risk of automatic closing of the sliding door when the car body is inclined or shakes, and the whole is a pure mechanical structure, is suitable for the installation of the rail transit crew room environment to achieve the effect of high reliability, power-free driving, low-cost rail transit crew room safety door control.

Description

Technical Field

[0001] This utility model relates to the technical field of sliding doors in rail transit, and in particular to a limiting mechanism for a cabin sliding door. Background Technology

[0002] Current rail transit crew compartments typically use non-electrically controlled sliding doors. After the key is turned on, the sliding door needs to be pushed open by the crew with external force, and there is no automatic opening function, which is very inconvenient. Moreover, after the sliding door is fully opened, there is no way to solve the problem of the sliding door automatically closing when it is affected by tilting gravity, which greatly affects the crew's entry and exit. Utility Model Content

[0003] The purpose of this utility model is to provide a limiting mechanism for a crew compartment sliding door that addresses the deficiencies in existing technologies. This mechanism enables the crew compartment sliding door to automatically reset to the fully open state after the key is turned on. It also completely eliminates the risk of the sliding door automatically closing when the vehicle body tilts or shakes. Furthermore, the entire structure is purely mechanical, making it suitable for installation in the environment of rail transit crew compartments. This achieves a high-reliability, low-cost safety door control system for rail transit crew compartments that requires no power.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: It includes a door leaf, a reset mechanism, a limiting mechanism, and a lower guide rail; the door leaf is equipped with a limiting pin, a reset device fixing bracket, and a conventional unlocking mechanism. The reset device fixing bracket is located at the top of the door leaf. After the door leaf is opened via the conventional unlocking mechanism, it moves inward toward the partition wall in conjunction with the lower guide rail; the reset mechanism is equipped with a reset device, which is located at the top of the partition wall and cooperates with the reset device fixing bracket to pull the door leaf; the limiting mechanism includes a gravity lock block and a torsion spring. The positions of the gravity lock block and the torsion spring on the partition wall are adapted to the movement trajectory of the limiting pin as the door leaf opens; the limiting pin pushes up the gravity lock block as the door leaf opens, and the gravity lock block, through the torsion spring, locks the limiting pin to complete the self-locking of the door leaf after opening and lifts the gravity lock block to complete the opening of the door leaf after self-locking.

[0005] Furthermore, the main body of the door is made of aluminum profiles spliced ​​together, with glass embedded in the middle.

[0006] Furthermore, the door leaf is fitted with anti-collision rubber profiles around its perimeter.

[0007] Furthermore, the resetter is a pull-rope type resetter.

[0008] Furthermore, the lower guide rail is composed of a slide rail and a wear-resistant groove, and the cross-section of the wear-resistant groove and the contact area between the wear-resistant groove and the slide rail are adapted to the pulling force required by the reset device to open the sliding door.

[0009] Furthermore, the slide rail is an aluminum profile slide rail, and the wear-resistant groove is an HDPE segmented wear-resistant groove.

[0010] Furthermore, the gravity locking block has an inclined smooth hook surface on the end face facing the limiting pin, and the other end of the inclined smooth hook surface has a limiting pin receiving groove.

[0011] The system includes a door panel, a reset mechanism, a limiting mechanism, and a lower guide rail. The door panel is equipped with a limiting pin, a reset device mounting bracket, and a conventional unlocking mechanism. The reset device mounting bracket is located at the top of the door panel. After the door panel is opened via the conventional unlocking mechanism, it moves inwards along the lower guide rail. The reset mechanism includes a reset device located at the top of the partition wall and working in conjunction with the reset device mounting bracket to pull the door panel. The limiting mechanism includes a gravity lock block and a torsion spring. The gravity lock block and the torsion spring are positioned on the partition wall in a manner consistent with the limiting pin moving with the door panel. The door's movement trajectory is adapted to the door's opening motion; the limiting pin pushes up the gravity lock block as the door opens, and the gravity lock block, through the torsion spring, locks the limiting pin to complete the self-locking of the door after it opens, and lifts the gravity lock block to complete the opening of the door after it is self-locked. This structure achieves the automatic reset of the cabin sliding door to the fully open state after the key is turned on, and completely eliminates the risk of the sliding door automatically closing when the car body tilts or shakes. Furthermore, the entire structure is purely mechanical, suitable for installation in the environment of rail transit cabins, to achieve the effect of high reliability, low cost of power-free rail transit cabin safety door control. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a perspective view of the cabin door limiting mechanism of this utility model;

[0014] Figure 2 This is a perspective view of the cabin sliding door limiting mechanism of this utility model in the open state;

[0015] Figure 3 This is a schematic diagram of the reset mechanism of this utility model;

[0016] Figure 4 This is a schematic diagram of the lower guide rail of this utility model;

[0017] Figure 5This is a schematic diagram of the resetter and the resetter fixing bracket of this utility model.

[0018] Figure 6 A schematic diagram of the limiting mechanism of this utility model;

[0019] Figure 7 A cross-sectional view of the limiting mechanism of this utility model.

[0020] Figure label:

[0021] Door leaf 1, limit pin 1-1, reset device fixing bracket 1-2, conventional unlocking mechanism 1-3, reset mechanism 2, reset device 2-1, limit mechanism 3, gravity lock block 3-1, torsion spring 3-2, lower guide rail 4, wear-resistant slide groove 4-1. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] In the description of this utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] A cabin room sliding door limiting mechanism, such as Figures 1-7 As shown, the device includes a door leaf 1, a reset mechanism 2, a limiting mechanism 3, and a lower guide rail 4. The door leaf 1 is equipped with a limiting pin 1-1, a reset device fixing bracket 1-2, and a conventional unlocking mechanism 1-3. The reset device fixing bracket 1-2 is located at the top of the door leaf 1. After the door leaf 1 is opened by the conventional unlocking mechanism 1-3, it moves into the partition wall in conjunction with the lower guide rail 4. The reset mechanism 2 is equipped with a reset device 2-1, which is located at the top inside the partition wall and cooperates with the reset device fixing bracket 1-2 to pull the door. Door 1; The limiting mechanism 3 includes a gravity locking block 3-1 and a torsion spring 3-2. The positions of the gravity locking block 3-1 and the torsion spring 3-2 on the partition wall are adapted to the movement trajectory of the limiting pin 1-1 as the door 1 opens. The limiting pin 1-1 pushes up the gravity locking block 3-1 as the door 1 opens. The gravity locking block 3-1, through the torsion spring 3-2, locks the limiting pin 1-1 to complete the self-locking of the door 1 after it is opened, and lifts the gravity locking block 3-1 to complete the opening of the door 1 after it is self-locked.

[0025] Specifically, by cooperating with the resetter 2-1 and the resetter fixing bracket 1-2 on the door leaf 1, after the conventional unlocking mechanism 1-3 is opened, the door leaf 1 is automatically pulled along the lower guide rail 4 to the fully open position, eliminating the need for manual pushing and solving the problem of reliance on manual operation in existing technologies. When the door leaf 1 is open, the limit pin 1-1 lifts the gravity lock block 3-1, and under the action of the torsion spring 3-2, the limit pin 1-1 is locked, realizing the full-open self-locking of the door leaf 1. When closing, lifting the gravity lock block 3-1 releases the limit pin 1-1, preventing the door leaf 1 from accidentally closing due to tilting or vibration of the train body. The reset mechanism 2 replaces manual pushing, realizing the process of "key unlocking to automatic opening of the door leaf 1 to the maximum state", improving operational efficiency. The limit mechanism 3, through the weight of the gravity lock block 3-1 and the torque of the torsion spring 3-2, mechanically locks the door leaf 1 in the fully open state, ensuring that the door does not close automatically when the train tilts or shakes, ensuring the safety of the crew. Safety is paramount; the purely mechanical structure design only requires adjusting the tension of the pull rope resetter 2-1, the counterweight of the gravity lock block 3-1, and the parameters of the torsion spring 3-2, which can reduce the failure rate and maintenance costs and adapt to the harsh environment of rail transit. This solution takes the automatic door opening capability of the reset mechanism 2 and the gravity self-locking capability of the limit mechanism 3 as its core. Through the linkage between the limit pin 1-1 of the door leaf 1 and the fixed bracket 1-2 of the resetter, the door opening is automated and the door is securely locked after opening. At the same time, it is low-cost and requires no electricity, combining safety and economy. The counterweight of the gravity lock block 3-1, together with the torsion spring 3-2, ensures the stability of the gravity lock block 3-1 when the train tilts or shakes, and will not disengage from the limit pin 1-1. At the same time, the limit pin 1-1 lifts the gravity lock block 3-1, and under the action of the torsion spring 3-2, it locks the limit pin 1-1, realizing the full opening self-locking of the door leaf 1. The torsion spring 3-2 buffers the gravity reset of the gravity lock block 3-1 to prevent excessive abnormal noise.

[0026] As a preferred embodiment of the above, such as Figures 1-7 As shown, the main body of the door leaf 1 is made of aluminum profile splicing, with glass embedded in the middle.

[0027] Specifically, by splicing the main body of door leaf 1 with aluminum profiles, the weight of the door body is significantly reduced, the traction load of the reset device 2-1 in the reset mechanism 2 is reduced, and the automatic door opening action is ensured to be smoother and more reliable. The rigidity of the aluminum profile structure ensures that door leaf 1 will not deform under frequent opening and closing and train vibration environments, and maintains precise matching with the lower guide rail 4. The glass embedded in the middle provides the crew with a passable view while ensuring structural strength, avoiding the impact of a fully enclosed door body on safety. The frame is fixed by the profile to prevent the glass from breaking under direct force, improving durability. In addition, aluminum profiles are easy to standardize production and replacement. When a section is damaged, it can be replaced independently without scrapping the entire door leaf 1. At the same time, if the glass is broken, it can be disassembled and replaced separately, reducing maintenance costs. Meanwhile, the lightweight door leaf 1 allows the reset device 2-1 to achieve efficient traction with less pulling force, extending the life of the reset device.

[0028] As a preferred embodiment of the above, such as Figures 1-7 As shown, the door leaf 1 is fitted with anti-collision rubber profiles around its perimeter.

[0029] Specifically, the door leaf 1 is secured with anti-collision rubber profiles around its perimeter: when the door is opened or closed or the train shakes, the rubber profiles can buffer the rigid collision between the door leaf 1 and the partition wall and door frame, reduce impact noise, and protect the aluminum profile frame and glass of the door leaf 1 from damage; the rubber profiles tightly fill the door gaps: reducing the gap between the door leaf 1 and the surrounding structure after it is closed, blocking external dust and airflow from entering the crew compartment, while avoiding the risk of pinching hands and improving safety; the buffering effect reduces the instantaneous impact load on the reset device 2-1 in the reset mechanism 2, preventing overload damage to the traction mechanism; and reduces the vibration wear of the gravity lock block 3-1 and the limit pin 1-1 of the limit mechanism 3 during locking and releasing, maintaining locking reliability.

[0030] As a preferred embodiment of the above, such as Figures 1-7 As shown, the resetter 2-1 is a pull-rope type resetter.

[0031] Specifically, the pull-rope type reset device 2-1 uses a flexible rope to pull the reset device fixing bracket 1-2 on the door leaf 1, adapting to the slight swaying during the opening and closing process of the door leaf 1, avoiding the rigid push rod from jamming due to uneven track or vehicle vibration, and ensuring continuous and reliable automatic door opening action; the pull rope structure is compact, occupies little space, and is easy to install in the narrow space at the top of the partition wall, without interfering with other components of the reset mechanism 2; the rope length is adjustable, and the traction stroke can be flexibly adjusted according to the actual installation distance, simplifying on-site debugging; the replacement cost is low, and a single rope can be replaced independently after wear, without the need to disassemble the entire reset device 2-1; it can also smoothly pull the door leaf 1 to the fully open position, and the uniform speed contraction characteristic of the pull rope allows the door leaf 1 to glide smoothly to the end point, ensuring that the limit pin 1-1 accurately lifts the gravity lock block 3-1, improving the self-locking success rate of the limit mechanism 3; the flexible traction reduces the inertial collision when the door leaf 1 reaches the fully open position, reducing the impact load on the limit pin 1-1 and the torsion spring 3-2.

[0032] As a preferred embodiment of the above, such as Figures 1-7 As shown, the lower guide rail 4 is composed of a slide rail and a wear-resistant groove 4-1. The cross-section of the wear-resistant groove 4-1 and the contact area between the wear-resistant groove 4-1 and the slide rail are adapted to the pulling force required by the reset device 2-1 to open the sliding door.

[0033] Specifically, by optimizing the cross-sectional shape of the slide groove, the guide contact surface at the bottom of the door leaf 1 is increased to prevent swaying during operation. The contact area between the slide groove and the slide track is calculated according to the usage environment to ensure that the friction force is neither too large to increase the load on the reset device 2-1, nor too small to cause the door leaf 1 to shake, thus ensuring the smoothness of automatic door opening.

[0034] As a preferred embodiment of the above, such as Figures 1-7 As shown, the slide is an aluminum profile slide, and the wear-resistant groove 4-1 is an HDPE segmented wear-resistant groove.

[0035] As a preferred embodiment of the above, such as Figures 1-7 As shown, the gravity locking block 3-1 has an inclined smooth hook surface on the end face facing the limiting pin 1-1, and the other end of the inclined smooth hook surface has a limiting pin receiving groove.

[0036] Specifically, the inclined and smooth hook surface guides the limiting pin 1-1 to slide naturally into the bottom of the gravity lock block 3-1 along the inclined surface when the door 1 is opened, reducing collision and jamming and ensuring smooth lifting action; the limiting pin receiving groove provides precise engagement space for the limiting pin 1-1, and the groove wall completely constrains the pin displacement, preventing accidental unlocking caused by vehicle vibration; the inclined design converts the impact force of the limiting pin 1-1 into sliding friction force, reducing the wear of the gravity lock block 3-1 and the torsion spring 3-2.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cabin room sliding door limiting mechanism, characterized in that: Includes door leaf (1), reset mechanism (2), limit mechanism (3), and lower guide rail (4); The door leaf (1) is provided with a limit pin (1-1), a reset device fixing bracket (1-2) and a conventional unlocking mechanism (1-3). The reset device fixing bracket (1-2) is located on the top of the door leaf (1). After the door leaf (1) is opened by the conventional unlocking mechanism (1-3), it moves into the partition wall in conjunction with the lower guide rail (4). The reset mechanism (2) is equipped with a resetter (2-1), which is located at the top of the partition wall and cooperates with the resetter fixing bracket (1-2) to pull the door leaf (1); The limiting mechanism (3) includes a gravity locking block (3-1) and a torsion spring (3-2). The positions of the gravity locking block (3-1) and the torsion spring (3-2) on the partition wall are adapted to the movement trajectory of the limiting pin (1-1) as the door leaf (1) opens. The limiting pin (1-1) lifts the gravity lock block (3-1) as the door leaf (1) opens. The gravity lock block (3-1) locks the limiting pin (1-1) through the torsion spring (3-2) to complete the self-locking of the door leaf (1) after it is opened, and lifts the gravity lock block (3-1) to complete the opening of the door leaf (1) after it is self-locked.

2. The cabin room sliding door limiting mechanism according to claim 1, characterized in that, The main body of the door leaf (1) is made of aluminum profile splicing, with glass embedded in the middle.

3. The cabin room sliding door limiting mechanism according to claim 2, characterized in that, The door leaf (1) is fitted with anti-collision rubber profiles around its perimeter.

4. The cabin room sliding door limiting mechanism according to claim 1, characterized in that, The resetter (2-1) is a pull-rope type resetter.

5. The cabin room sliding door limiting mechanism according to claim 1, characterized in that, The lower guide rail (4) consists of a slide rail and a wear-resistant groove (4-1). The cross-section of the wear-resistant groove (4-1) and the contact area between the wear-resistant groove (4-1) and the slide rail are adapted to the pulling force required by the reset device (2-1) to open the sliding door.

6. A cabin room sliding door limiting mechanism according to claim 5, characterized in that, The slide is made of aluminum profile, and the wear-resistant groove (4-1) is a segmented HDPE wear-resistant groove.

7. A cabin room sliding door limiting mechanism according to claim 1, characterized in that, The gravity locking block (3-1) has an inclined smooth hook surface on the end face facing the limiting pin (1-1), and the other end of the inclined smooth hook surface has a limiting pin receiving groove.

Images