Railway vehicle connecting rod lock structure

Abstract

The railway vehicle connecting rod lock structure comprises a frame assembly and a ramp lock assembly, the ramp lock assembly comprises a synchronous rod, a pull rod, connecting plates and two lock heads, the synchronous rod is connected with a handle through the pull rod, and the connecting plates are movably connected to the two ends of the synchronous rod; the lock head part comprises a support connected to the frame assembly and a spring bolt arranged on the support in a sliding mode, the connecting plate is rotationally arranged on the support, and the end, away from the synchronous rod, of the connecting plate is connected with the spring bolt. The spring bolt has a first state and a second state, in the first state, the spring bolt is located in the support, and in the second state, the spring bolt extends out of the support so as to lock the evacuation ramp. The device has the advantages of being large in bearing capacity and high in reliability.

Description

Technical Field

[0001] The present application relates to the field of rail transit technology, and in particular to a rail vehicle connecting rod lock structure. Background Art

[0002] The emergency evacuation ramp is a device used by urban rail vehicles to evacuate vehicle passengers in an emergency. It is usually installed at the head of the vehicle, directly behind the emergency evacuation door. After the emergency evacuation door is opened, the emergency evacuation ramp is activated to form an evacuation channel for passengers. The evacuation ramp is widely used because of its high evacuation efficiency, simple operation, and short time to form an evacuation channel.

[0003] For example, the patent with application number CN201520010183.5 discloses a locking mechanism for the emergency evacuation ramp of urban rail vehicles. The locking mechanism utilizes the geometric relationship after the ramp is recovered to design a slot lock. The ramp has a tendency to expand when it is folded and the air spring preload torque is used to ensure that the impact inertia moment generated during vehicle operation is resisted, the ramp is reliably locked, and the structure is simple.

[0004] However, the above structure may have the risk of loose locking for evacuation ramps with heavy loads. In order to improve the safety and reliability of emergency evacuation ramp locks, a connecting rod lock structure is designed. Summary of the invention

[0005] The purpose of the present application is to provide a rail vehicle connecting rod lock structure to solve the problem in the prior art that the locking mechanism is not firmly locked on the evacuation ramp with a large load.

[0006] In order to achieve the above objectives, this application is implemented by adopting the following technical solutions:

[0007] A rail vehicle connecting rod lock structure comprises a frame assembly and a ramp lock assembly, wherein the ramp lock assembly comprises a synchronization rod, a pull rod, a connecting plate and two lock parts, wherein the synchronization rod is connected to a handle through the pull rod, and the connecting plate is movably connected to both ends of the synchronization rod;

[0008] The lock part includes a bracket connected to the frame assembly and a lock tongue slidably arranged on the bracket. The connecting plate is rotatably arranged on the bracket, and one end away from the synchronization rod is connected to the lock tongue. The lock tongue has a first state and a second state. In the first state, the lock tongue is located in the bracket. In the second state, the lock tongue extends out of the bracket to lock the evacuation ramp.

[0009] Further, the frame assembly includes a reinforcement plate, an outer frame and a reinforcing beam assembly connected to the outer frame;

[0010] The reinforcing plate is welded to the inner side of the outer frame, and the bracket is fixed to the reinforcing plate by screws.

[0011] Furthermore, the outer frame is in the shape of a square frame, and the outer frame includes longitudinal frame bars and transverse frame bars connected to each other;

[0012] The reinforcing beam assembly includes a first reinforcing beam, a second reinforcing beam, a third reinforcing beam and a fourth reinforcing beam disposed in an outer frame.

[0013] Furthermore, it also includes a ramp cover plate connected to the outer frame for shielding the connecting plate.

[0014] Furthermore, the connecting plate includes two vertically connected plates, and the locking tongue and the synchronization rod are respectively connected to the ends of the two plates of the connecting plate.

[0015] Furthermore, the hinge point between the connecting plate and the bracket is located at the connection between the two plates of the connecting plate.

[0016] Furthermore, the synchronization rod is connected to the connection plate via a ball head.

[0017] Furthermore, one end of the top surface of the bracket is connected to a lock core cover plate, and a receiving cavity is formed between the lock core cover plate and the bracket;

[0018] When the lock tongue is in the first state, the lock tongue is located in the accommodating cavity; when the lock tongue is in the second state, a portion of the lock tongue extends out of the accommodating cavity.

[0019] Furthermore, the pull rod is arranged at the middle part of the synchronization rod.

[0020] Furthermore, there are two pull rods, and the two pull rods are symmetrical about the center of the synchronization rod.

[0021] The beneficial effects of this application are:

[0022] The present application uses a synchronous rod design to ensure that the movements of the two lock parts are consistent, thus improving the reliability and safety of the entire system; the lock tongue is driven to move by the pull rod, the synchronous rod and the connecting plate, forming a linkage motion scheme, which has the advantages of large load-bearing capacity and high reliability. The rotating connecting plate and the synchronous rod and the pull rod with a long lever arm can ensure that the lock tongue is kept in the second position to prevent the lock tongue from sliding, so that the structure of the present application still has high reliability under large load. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of this application;

[0024] Figure 2 It is a schematic diagram of the structure of the ramp lock assembly in this application;

[0025] Figure 3 It is a schematic diagram of the structure of the framework assembly in this application;

[0026] Figure 4 for Figure 3 A magnified view of the layout.

[0027] Among them: 1. frame assembly; 12. longitudinal frame bar; 13. transverse frame bar; 14. first reinforcing beam; 15. second reinforcing beam; 16. third reinforcing beam; 17. fourth reinforcing beam; 18. reinforcing plate;

[0028] 2. Ramp cover;

[0029] 3. Ramp lock assembly; 4. Bracket; 5. Connecting plate; 6. Lock tongue; 7. Lock core cover plate; 8. Synchronous rod; 9. Pull rod; 10. Handle; 11. Pin shaft. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by this application easy to understand, this application is further explained below in conjunction with specific implementation methods.

[0031] It should be noted that in the description of the present application, the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "up", "down", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application rather than requiring that the present application must be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. The terms "front", "rear", "left", "right", "up", and "down" used in the description of the present application refer to the directions in the accompanying drawings, and the terms "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0032] like Figures 1 to 4 As shown, the present application discloses a rail vehicle connecting rod lock structure, including a frame assembly 1 and a ramp lock assembly 3, the ramp lock assembly 3 includes a synchronization rod 8, a pull rod 9, a connecting plate 5 and two lock parts, the synchronization rod 8 is connected to the handle 10 through the pull rod 9, and the connecting plate 5 is movably connected to the two ends of the synchronization rod 8; the lock part includes a bracket 4 connected to the frame assembly 1 and a lock tongue 6 slidably set on the bracket 4, the connecting plate 5 is rotatably set on the bracket 4, and one end away from the synchronization rod 8 is connected to the lock tongue 6; the lock tongue 6 has a first state and a second state, in the first state, the lock tongue 6 is located in the bracket 4, and in the second state, the lock tongue 6 extends out of the bracket 4 to lock the evacuation ramp.

[0033] At the beginning, the lock tongue 6 is located in the first state inside the bracket 4, at which time the evacuation ramp can be released or recovered. When the evacuation ramp is released, the operator starts the mechanism by rotating the handle 10. The movement of the handle 10 is transmitted to the pull rod 9, which in turn activates the synchronization rod 8. The movement of the synchronization rod 8 is transmitted to the lock tongue 6 through the connecting plate 5. The connecting plate 5 rotates around its connection point with the bracket 4, driving the lock tongue 6 to move from the first state to the second state, that is, extending out of the bracket 4. When the lock tongue 6 is fully extended, it will jam the evacuation ramp to prevent it from moving, thereby achieving a locking effect. When unlocking, the handle 10 is operated in reverse to reverse the above process. The lock tongue 6 retracts into the bracket 4.

[0034] The present application uses the design of the synchronization rod 8 to ensure that the movements of the two lock parts are consistent, thereby improving the reliability and safety of the entire system. The lock tongue 6 is driven to move by the pull rod 9, the synchronization rod 8 and the connecting plate 5, forming a linkage motion scheme, which has the advantages of large load-bearing capacity and high reliability. The rotating connecting plate and the synchronization rod and the pull rod with a long force arm can ensure that the lock tongue 6 is kept in the second position to prevent the lock tongue from sliding, so that the structure of the present application still has high reliability under large load.

[0035] The present application is described below by means of a specific embodiment.

[0036] like Figure 1 and Figure 2 As shown, the ramp lock assembly 3 of the present application includes a synchronization rod 8, a pull rod 9, a handle 10, a pin shaft 11 and two lock parts, and the lock parts include a bracket 4, a connecting plate 5, a lock tongue 6 and a lock core cover plate 7.

[0037] The bracket 4 is connected to the frame assembly 1, the connecting plate 5 is rotatably arranged on the bracket 4, and the locking tongue 6 is slidably arranged on the bracket 4. Further, the connecting plate 5 includes two vertically connected plates, and the locking tongue 6 and the synchronization rod 8 are respectively connected to the ends of the two plates of the connecting plate 5. That is, the two ends of the synchronization rod 8 are connected to one end of the two connecting plates 5, and the other ends of the two connecting plates 5 are connected to the locking tongue 6. When working, the movement of the synchronization rod 8 can drive the connecting plate 5 to rotate, thereby realizing the movement of the locking tongue 6.

[0038] The lock tongue 6 has a first state and a second state. In the first state, the lock tongue 6 is located in the bracket 4. At this time, the lock tongue 6 does not hinder the evacuation ramp, and the evacuation ramp can be released or recovered. In the second state, the lock tongue 6 extends out of the bracket 4 to lock the released evacuation ramp.

[0039] In one embodiment, the hinge point of the connecting plate 5 and the bracket 4 is located at the connection of the two plates of the connecting plate 5, and the synchronization rod 8 is designed to be connected to the connecting plate 5 through a ball head. This design can better realize the movement of the connecting plate 5 around the hinge point when the synchronization rod 8 rotates, thereby ensuring the stability of pushing the lock tongue to move.

[0040] In one embodiment, a lock core cover plate 7 is connected to one end of the top surface of the bracket 4, and a receiving cavity is formed between the lock core cover plate 7 and the bracket 4; when the lock tongue 6 is in the first state, the lock tongue 6 is located in the receiving cavity; when the lock tongue 6 is in the second state, a part of the lock tongue 6 extends out of the receiving cavity. This design can ensure effective protection of the lock tongue and prevent the lock tongue 6 from getting stuck and affecting the locking of the rapid ramp.

[0041] In one embodiment, the synchronization rod 8 is a straight long rod, and the pull rod 9 is arranged in the middle of the synchronization rod 8. Specifically, there are two pull rods 9, and the two pull rods 9 are symmetrical about the center of the synchronization rod 8. The handle is connected to the end of the pull rod 9 through a pin 11, which can drive the synchronization rod 8 to move.

[0042] Specifically, Figure 3 and Figure 4 As shown, the present application also designs a frame assembly 1, which not only provides basic support for the ramp, but also ensures the connection stability and reliability of the ramp lock assembly 3 through its structural design, thereby ensuring that the ramp lock assembly can work effectively.

[0043] The frame assembly 1 includes a reinforcement plate 18, an outer frame and a reinforcing beam assembly connected to the outer frame; the reinforcement plate 18 is arranged on the inner side of the outer frame by plug welding to increase the strength of the frame assembly 1 and ensure the stability of the connecting rod lock function. The bracket 4 is fixed to the reinforcement plate 18 by screws.

[0044] like Figure 1 As shown, a hinge is also provided at the right end of the outer frame, and the locking plate is connected to the outer frame through the hinge. When the lock tongue 6 is in the second state, the handle 10 at the end of the pull rod 9 is located in the groove of the locking plate, further ensuring the stability of the lock tongue state.

[0045] In one embodiment, Figure 3 As shown, the outer frame is in the shape of a square frame, and the outer frame includes a longitudinal frame bar 12 and a transverse frame bar 13 connected to each other; the reinforcing beam assembly includes a first reinforcing beam 14, a second reinforcing beam 15, a third reinforcing beam 16 and a fourth reinforcing beam 17 arranged in the outer frame. The first reinforcing beam 14 and the fourth reinforcing beam 17 are beams parallel to the transverse frame bar 13, and the first reinforcing beam 14 and the fourth reinforcing beam 17 are connected to the longitudinal frame bar 12. The second reinforcing beam 15 is a beam parallel to the longitudinal frame bar 12, and the second reinforcing beam 15 is connected to the transverse frame bar 13, the first reinforcing beam 14 and the fourth reinforcing beam 17. The third reinforcing beam 16 is an inclined beam, connected between the second reinforcing beam 15 and the longitudinal frame bar 12.

[0046] In one embodiment, the outer frame is further connected with a ramp cover plate 2. The ramp cover plate 2 is a plate-like structure, which can shield the connecting plate 5, prevent other parts from being inserted into the connecting plate, and ensure the effective rotation of the connecting plate 5.

[0047] The connecting rod lock structure device of the present application can be used in various working conditions, is safe and reliable, has a simple and convenient structure, meets new requirements such as versatility, low cost, and convenient maintenance, and improves the safety, reliability and application scope of the emergency evacuation ramp system.

[0048] When using this application, the operating handle is rotated counterclockwise manually, and under the action of the connecting rod, the lock tongue retracts, the unlocking is completed, and the ramp is unfolded; it can adapt to ramp systems with different load conditions, which is simple and convenient, and easy to debug and maintain. Through manual operation, the ramp is unlocked and put into use; the connecting rod lock has a simple structure, large load-bearing capacity, and strong reliability. No electrical or gas circuit control is required, the operation is simple, and it is highly safe in emergency situations. It is suitable for rail emergency evacuation ramps, and has little impact on the size of the existing ramp system, and can be used in a variety of working conditions.

[0049] It is known from common technical knowledge that the present application can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present application or within the scope equivalent to the present application are included in the present application.

Claims

1. A rail vehicle connecting rod lock structure, characterized in that: It comprises a frame assembly (1) and a ramp lock assembly (3), wherein the ramp lock assembly (3) comprises a synchronization rod (8), a pull rod (9), a connecting plate (5) and two lock head parts, wherein the synchronization rod (8) is connected to a handle (10) via the pull rod (9), and the connecting plate (5) is movably connected to both ends of the synchronization rod (8); The lock portion comprises a bracket (4) connected to the frame assembly (1) and a lock tongue (6) slidably arranged on the bracket (4); the connecting plate (5) is rotatably arranged on the bracket (4) and one end thereof away from the synchronization rod (8) is connected to the lock tongue (6); the lock tongue (6) has a first state and a second state; in the first state, the lock tongue (6) is located inside the bracket (4); in the second state, the lock tongue (6) extends outside the bracket (4) to lock the evacuation ramp.

2. The connecting rod lock structure according to claim 1, characterized in that: The frame assembly comprises a reinforcing plate (18), an outer frame and a reinforcing beam assembly connected to the outer frame; The reinforcing plate (18) is welded to the inner side of the outer frame, and the bracket (4) is fixed to the reinforcing plate (18) by means of screws.

3. The connecting rod lock structure according to claim 2, characterized in that: The outer frame is in the shape of a square frame, and comprises longitudinal frame bars (12) and transverse frame bars (13) connected to each other; The reinforcing beam assembly comprises a first reinforcing beam (14), a second reinforcing beam (15), a third reinforcing beam (16) and a fourth reinforcing beam (17) which are arranged in an outer frame.

4. The connecting rod lock structure according to claim 2, characterized in that: It also includes a ramp cover plate (2) connected to the outer frame and used for shielding the connecting plate (5).

5. The connecting rod lock structure according to claim 1, characterized in that: The connecting plate (5) comprises two vertically connected plate members, and the locking tongue (6) and the synchronization rod (8) are respectively connected to the ends of the two plates of the connecting plate (5).

6. The connecting rod lock structure according to claim 5, characterized in that: The hinge point between the connecting plate (5) and the bracket (4) is located at the connection point between the two plates of the connecting plate (5).

7. The connecting rod lock structure according to claim 1, characterized in that: The synchronization rod (8) is connected to the connection plate (5) via a ball head.

8. The connecting rod lock structure according to claim 1, characterized in that: One end of the top surface of the bracket (4) is connected to a lock core cover plate (7), and a receiving cavity is formed between the lock core cover plate (7) and the bracket (4); When the lock tongue (6) is in a first state, the lock tongue (6) is located in the accommodating cavity; when the lock tongue (6) is in a second state, a portion of the lock tongue (6) extends out of the accommodating cavity.

9. The connecting rod lock structure according to claim 1, characterized in that: The pull rod (9) is arranged at the middle portion of the synchronization rod (8).

10. The connecting rod lock structure according to claim 9, characterized in that: There are two pull rods (9), and the two pull rods (9) are symmetrical about the center of the synchronization rod (8).

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