A retraction locking device

Abstract

This application relates to the field of trains, and more specifically to a retraction locking device, wherein the retraction locking device includes: a connecting frame configured to be fixedly connected to an external connecting plate; a swing assembly; and a limiting assembly. The swing assembly is disposed on the wall surface of the connecting frame where the connecting portion is located, and the swing assembly is also rotatably connected to the connecting frame. The limiting assembly is disposed on the side of the connecting frame opposite to the connecting portion, and the limiting assembly cooperates with the swing assembly and is configured to be extendable by a predetermined length. In one or more embodiments of this application, the swing assembly includes a swing block, one end of which is rotatably connected to the connecting portion. This utility model can achieve the advantages of convenient use, easy operation, and the ability to limit the crossbeam assembly by effectively utilizing its own structural configuration.

Description

Technical Field

[0001] This application relates to the field of trains, and more specifically to a retraction locking device. Background Technology

[0002] When a train stops in a section and cannot run, and an emergency such as a fire or terrorist hijacking occurs, it is necessary to consider the emergency evacuation of train passengers. When the train is on an elevated or ground-level track, passengers can go down to the cable trough cover platform in the section through the passenger evacuation stairs at the passenger compartment doors to evacuate. When the train is on a tunnel track, passengers can go through the passenger compartment doors to evacuate through the tunnel evacuation platform.

[0003] The side evacuation device is designed to be installed directly below the front and rear passenger compartment doors of the first car of the vehicle. The side evacuation device includes a crossbeam assembly that can move laterally forward and backward. Therefore, it is necessary to design a device for selectively limiting the position of the crossbeam assembly, and part of the crossbeam assembly's structure is as follows: Figure 3 As shown, there is a need for a convenient, easy-to-use, and capable-to-limit the retraction locking device of the crossbeam assembly. Summary of the Invention

[0004] The main purpose of this application is to provide a retraction locking device, wherein the retraction locking device can effectively utilize its own structural configuration to achieve the advantages of convenient use, easy operation, and the ability to limit the crossbeam assembly.

[0005] Another objective of this application is to provide a retraction locking device, wherein the retraction locking device includes a connecting frame, the connecting frame being configured to be fixedly connected to an external connecting plate; a swing assembly; and a limiting assembly. The swing assembly is disposed on the wall surface of the connecting frame where the connecting portion is located, and the swing assembly is also rotatably connected to the connecting frame. The limiting assembly is disposed on the side of the connecting frame away from the connecting portion. The limiting assembly cooperates with the swing assembly and is configured to be extendable by a predetermined length. The limiting assembly includes a limiting block, the limiting block being configured to move a predetermined distance toward or away from the crossbeam assembly to block or not block the positioning block of the crossbeam assembly, i.e., the position of the crossbeam assembly can be selectively limited by moving the limiting block.

[0006] Another objective of this application is to provide a retraction locking device, wherein the retraction locking device has a simple structure, is easy to operate, does not involve complex manufacturing processes and expensive materials, has high economic efficiency, and is easy to promote and use.

[0007] To achieve at least one of the above-mentioned objectives, this application provides a retraction locking device, wherein the retraction locking device includes:

[0008] A connecting frame, the connecting frame being configured to be fixedly connected to an external connecting plate;

[0009] One swing component;

[0010] A limiting component is provided, wherein the swing component is disposed on the wall surface of the connecting frame where the connecting part is provided, and the swing component is also rotatably connected to the connecting frame, wherein the limiting component is disposed on the side of the connecting frame away from the connecting part, the limiting component cooperates with the swing component, and is provided with a retractable predetermined length.

[0011] In one or more embodiments of this application, the swing assembly includes a swing block, one end of which is rotatably connected to the connecting portion.

[0012] In one or more embodiments of this application, the top of the middle section of the swing block also has a protrusion, and an external rope can be fixed on the protrusion, so that the swing block can rotate a predetermined angle by pulling the external rope.

[0013] In one or more embodiments of this application, the bottom wall of the connecting frame with the connecting part also has two oppositely arranged first insertion holes. In addition, the limiting component also includes a fixing plate, which is fixed to the side of the connecting frame away from the connecting part. The fixing plate also has two oppositely arranged second insertion holes, and the two first insertion holes correspond one-to-one with the second insertion holes.

[0014] In one or more embodiments of this application, the fixing plate has two oppositely arranged protrusions, and the limiting component further includes a limiting block. The bottom of the limiting block also has a groove with an opening, and the side of the two protrusions that are opposite to each other contacts the sidewall forming the groove.

[0015] In one or more embodiments of this application, each of the protrusions further has at least one guide groove, and the retraction locking device further includes at least one sliding rod, the two ends of which pass through the two guide grooves respectively.

[0016] In one or more embodiments of this application, the limiting component further includes at least one first connecting rod and at least one second connecting rod. One end of the first connecting rod engages with the middle section of the sliding rod, and the other end passes through the second insertion hole and is placed inside the first insertion hole. Meanwhile, one end of the second connecting rod is fixedly connected. In addition, the limiting component also includes a pressure plate. The pressure plate is spaced at a predetermined distance from the wall surface of the connecting frame where the connecting part is located. Meanwhile, the end of the second connecting rod away from the first connecting rod is fixed on the pressure plate.

[0017] In one or more embodiments of this application, the limiting component further includes an elastic element, which is sleeved on the second connecting rod, with one end of the elastic element abutting against the fixed plate and the other end abutting against the sliding rod. In addition, both ends of the sliding rod cooperate with the limiting block.

[0018] In one or more embodiments of this application, the end of the limiting block opposite to the slide groove also has a guide slope, which is configured to cooperate with an external positioning block. Attached Figure Description

[0019] These and / or other aspects and advantages of this application will become clearer and more readily understood from the following detailed description of embodiments of this application taken in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 The figure shows a schematic diagram of a retraction locking device.

[0021] Figure 2 The figure shows a partial structural diagram of a retraction locking device.

[0022] Figure 3 The illustration shows an application diagram of a retraction locking device. Detailed Implementation

[0023] The terms and words used in the following specification and claims are not limited to their literal meaning, but are used solely by the inventors to enable a clear and consistent understanding of this application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this application is provided for illustrative purposes only and not for the purpose of limiting the application as defined in the appended claims and their equivalents.

[0024] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0025] While ordinal numbers such as "first," "second," etc., will be used to describe various components, there is no limitation on which components are used herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component, without departing from the teachings of the utility model concept. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It will also be understood that the terms “comprising” and / or “having” as used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0027] Indicative retraction locking device

[0028] refer to Figures 1 to 3 According to a preferred embodiment of the present invention, the retraction locking device has the following structure: Figure 1 As shown, it includes a connecting frame 10, which is configured to be fixedly connected to an external connecting plate, specifically by means of multiple external screws. Specifically, the connecting frame 10 has a connecting portion 11 on one side.

[0029] Specifically, the retraction locking device further includes a swing component 20 and a limiting component 30. The swing component 20 is disposed on the wall surface of the connecting frame 10 where the connecting portion 11 is located, and the swing component 20 is rotatably connected to the connecting frame 10. The limiting component 30 is disposed on the side of the connecting frame 10 opposite to the connecting portion 11. The limiting component 30 cooperates with the swing component 20 and is provided to be extendable by a predetermined length. It should be noted that the swing component 20 can be subjected to an external force, swinging at a predetermined angle, and simultaneously applying a force to the limiting component 30, causing the limiting component 30 to retract a predetermined distance.

[0030] Specifically, the swing assembly 20 includes a swing block 21, one end of which is rotatably connected to the connecting part 11. The connection is made by a shaft 22 passing through the end of the swing block 21 and also through the connecting part 11. The position of the shaft 22 is limited by a retaining ring, and the swing block 21 can rotate around the shaft 22.

[0031] It should be noted that the top of the middle section of the swing block 21 also has a protrusion 211, and the external rope can be fixed to the protrusion 211. By pulling the external rope, the swing block 21 can be rotated by a predetermined angle. It is worth mentioning that the bottom wall of the connecting part 11 of the connecting frame 10 also has two oppositely arranged first insertion holes. In addition, the limiting component 30 also includes a fixing plate 31, which is fixed to the side of the connecting frame 10 away from the connecting part 11. The fixing plate 31 also has two oppositely arranged second insertion holes, and the two first insertion holes correspond one-to-one with the two second insertion holes.

[0032] Furthermore, the positioning plate 31 has two opposing protrusions 311, and the limiting component 30 also includes a limiting block 35. The bottom of the limiting block 35 also has a groove with an opening, and the side of the two protrusions 311 that are opposite to each other is in contact with the sidewall forming the groove.

[0033] Furthermore, each of the protrusions 311 also has at least one guide groove 31101, and the limiting component 30 also includes at least one sliding rod 31, the two ends of which pass through the two guide grooves 31101 respectively, and the lateral movement of the sliding rod 31 is limited by a retaining ring to prevent the sliding rod 31 from disengaging from the guide groove 31101.

[0034] Furthermore, the limiting component 30 also includes at least one first connecting rod 32 and at least one second connecting rod 32. One end of the first connecting rod 32 engages with the middle section of the sliding rod 31, and the other end passes through the second insertion hole and is placed inside the first insertion hole. Simultaneously, one end of the second connecting rod 32 is fixedly connected. Additionally, the limiting component 30 includes a pressure plate 34, which is spaced a predetermined distance from the wall surface of the connecting frame 10 where the connecting portion 11 is located. The end of the second connecting rod 32 facing away from the first connecting rod 32 is fixed to the pressure plate 34, and the ends of the second connecting rod 32 and the pressure plate 34 are fixed together by external fasteners. It is worth noting that the size of the second connecting rod 32 is larger than that of the first connecting rod 32, and the limiting component 30 also includes an elastic element 35, which is sleeved on the second connecting rod 32. One end of the elastic element 35 abuts against the fixing plate 31, and the other end abuts against the sliding rod 31.

[0035] It is worth mentioning that both ends of the sliding rod 31 also cooperate with the limiting block 35, and their connection method is as follows: Figure 2As shown. Specifically, to prevent the sliding rod 31 from tilting during its movement along the groove, two connecting sleeves 36 are fitted onto the sliding rod 31. The two connecting sleeves 36 are located on both sides of the second connecting rod 32, and the opposite ends of the two connecting sleeves 36 are in contact with the wall surface forming the groove. That is, at this time, the end of the elastic member 35 abuts against the connecting sleeve 36.

[0036] Furthermore, the end of the limiting block 35 opposite to the slide groove also has a guide slope 351, which is configured to cooperate with the external positioning block 100, and its specific structure is as follows: Figure 1 As shown. It should be noted that, as... Figure 3 As shown, the external positioning block 100 is configured to move towards or away from the limiting block 35. When the external positioning block 100 moves to the guide slope 351 of the limiting block 35, i.e., the moving direction is from left to right, the surface of the positioning block 100 will rub against the guide slope 351, causing the limiting block 35 to move a predetermined distance towards the fixing plate 31 to allow the positioning block 100 to pass. At the same time, the elastic element 35 deforms. After the positioning block 100 passes, the limiting block 35 resets due to the force of the elastic element 35. Conversely, the user can pull the external rope to make the swinging member rotate. At this time, the pressure plate 34 is subjected to the force of the swinging member and moves a predetermined distance away from the connecting plate. At the same time, the pressure plate 34 drives the first connecting rod 32 and the second connecting rod 32 to move synchronously towards the fixing plate 31, thereby causing the positioning block 100 to move towards the fixing plate 31, so that the positioning block 100 no longer blocks the positioning block 31.

[0037] In summary, the retraction locking device based on the embodiments of this application is explained, which provides advantages such as ease of use, convenient operation, and the ability to limit the crossbeam assembly.

[0038] It is worth mentioning that, in this embodiment, the retraction locking device has a simple structure, does not involve complex manufacturing processes or expensive materials, and is highly economical. At the same time, for manufacturers, the retraction locking device provided in this application is easy to produce and inexpensive, which is more conducive to controlling production costs and further facilitates product promotion and use.

[0039] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The function and structural principle of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from these principles.

Claims

1. A retraction locking device, characterized in that, The retraction locking device includes: A connecting frame is configured to be fixedly connected to an external connecting plate, and a connecting portion is provided on one side of the connecting frame; One swing component; A limiting component is provided, wherein the swing component is disposed on the wall surface of the connecting frame where the connecting part is provided, and the swing component is also rotatably connected to the connecting frame, wherein the limiting component is disposed on the side of the connecting frame away from the connecting part, the limiting component cooperates with the swing component, and is provided with a retractable predetermined length.

2. The retraction locking device according to claim 1, wherein the swing assembly includes a swing block, one end of which is rotatably connected to the connecting portion.

3. The retraction locking device according to claim 2, wherein the top of the middle section of the swing block further has a protrusion, and the external rope can be fixed on the protrusion, and the swing block can be rotated by a predetermined angle by pulling the external rope.

4. The retraction locking device according to claim 3, wherein the bottom wall of the connecting frame with the connecting part has two oppositely arranged first insertion holes, and the limiting component further includes a fixing plate, the fixing plate is fixed to the side of the connecting frame away from the connecting part, and the fixing plate also has two oppositely arranged second insertion holes, the two first insertion holes and the second insertion holes correspond one-to-one.

5. The retraction locking device according to claim 4, wherein the fixing plate has two oppositely arranged protrusions, and the limiting component further includes a limiting block, the bottom of the limiting block having an open groove, and the side of the two protrusions facing away from each other contacting the sidewall forming the groove.

6. The retraction locking device according to claim 5, wherein each of the protrusions further has at least one guide groove, and the retraction locking device further includes at least one sliding rod, the two ends of which pass through the two guide grooves respectively.

7. The retraction locking device according to claim 6, wherein the limiting component further includes at least one first connecting rod and at least one second connecting rod, one end of the first connecting rod cooperating with the middle section of the sliding rod, the other end passing through the second insertion hole and placed in the first insertion hole, while one end of the second connecting rod is fixedly connected, and the limiting component further includes a pressure plate, the pressure plate being spaced at a predetermined distance from the wall surface of the connecting frame where the connecting part is located, while the end of the second connecting rod away from the first connecting rod is fixed on the pressure plate.

8. The retraction locking device according to claim 7, wherein the limiting component further includes an elastic element, the elastic element is sleeved on the second connecting rod, and one end of the elastic element abuts against the fixed plate, the other end abuts against the sliding rod, and both ends of the sliding rod cooperate with the limiting block.

9. The retraction locking device according to claim 5, wherein the end of the limiting block opposite to the slide groove further has a guide slope, which is configured to cooperate with the external positioning block.

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